Magnetic isolated driven full-bridge bipolar pulse generator

Abstract

The application provides a full-bridge bipolar pulse generator driven by magnetic isolation, comprising a synchronous control signal generation module, a magnetic isolation module, a full-bridge Marx circuit module and a load; the synchronous control signal generation module is used for generating control signal 1 and control signal 2 input into the magnetic isolation module; the magnetic isolation module is used for isolating the high potential suspension of solid-state switches in the full-bridge Marx circuit module and converting the control signal 1 and the control signal 2 into control signals of the solid-state switches; the full-bridge Marx circuit module is used for generating positive polarity pulse width adjustable square wave pulses and negative polarity pulse width adjustable square wave pulses according to the control signals of the solid-state switches and inputting the square wave pulses into the load. Through the application, the circuit topology is simple, the application of power supply, capacitor and switching device is reduced, the output polarity, pulse width and pulse interval adjustable square wave pulses are obtained, and the modular design is adopted, so that the driving mode can be switched and the output voltage can be improved through series superposition.

Description

Technical Field

[0001] This application relates to the field of pulse power device technology, and more specifically, to a magnetically isolated driven full-bridge bipolar pulse generator. Background Technology

[0002] In recent years, pulse generators have been widely used in fields such as medicine, food processing, and pollution control. In particular, in the medical field, pulsed field ablation (PFA) technology, which relies on the high-voltage pulsed electric field generated by a pulse generator, has received widespread attention.

[0003] The core mechanism of pulsed electric field ablation technology is based on the electroporation effect. When high-intensity (1800-2000 volts) and extremely short-duration (nanosecond to microsecond) electrical pulses are applied to cellular tissue, the high-voltage electric field instantaneously disrupts the homeostasis of ions inside and outside the cell, causing nanoscale pores to form in the lipid bilayer of the cell membrane—the electroporation phenomenon. When the pulse intensity and number reach a certain threshold, the cell membrane produces irreversible hydrophilic pores, increasing cell membrane permeability. The normal ion gradient inside and outside the cell is disrupted, and the affected cells eventually undergo programmed apoptosis, thereby achieving ablation of the diseased tissue. As one of the core technologies of pulsed electric field ablation, the performance parameters of the pulse generator directly affect the final therapeutic effect.

[0004] To achieve high-voltage output, the issue of high-potential floating drive for switches in the circuit needs to be addressed. Such drives are divided into active and passive drives. Active drives are mostly opto-isolated, requiring each switch to be equipped with an isolation power supply and opto-isolation module for isolation. Magnetic isolation drives, on the other hand, are passive drives that utilize a magnetic core to transmit the drive signal. They do not require an additional isolation power supply module, offer higher isolation voltage, significantly improve output amplitude, reduce pulse source costs, and provide excellent synchronization. This greatly simplifies control design and reduces the number of components required.

[0005] Existing bipolar Marx circuits mostly employ dual-Marx and full-bridge configurations. Dual-Marx topologies offer higher switching voltage utilization, but require twice the number of capacitors compared to unipolar circuits at the same voltage, resulting in a larger number of components. Full-bridge topologies require the same number of capacitors as unipolar circuits at the same voltage, but require more switches and have more complex control.

[0006] Patent application CN112540221A provides a method for generating and detecting pulse voltages, along with a corresponding device. While it achieves the output of both high-voltage narrow pulses and low-voltage wide pulses, it uses optical fiber for isolated driving, resulting in a large number of components. Patent application CN120546644A provides a multi-channel synchronous optical fiber driven solid-state repetitive pulse generator and its control method. Although it achieves pulse generation controlled by a single signal, it can only output unipolar pulses. Patent application CN116781042A provides a bipolar pulse source based on a novel magnetic isolation drive. While the magnetic isolation method simplifies control, it employs a dual Marx configuration, requiring two power supplies and two energy storage capacitors per stage.

[0007] Currently, there is a lack of bipolar Marx circuit implementation schemes in this field that do not require doubling the number of capacitors while optimizing the number of switches and control strategies. Summary of the Invention

[0008] In view of the deficiencies in the prior art, the purpose of this application is to provide a magnetically isolated driven full-bridge bipolar pulse generator.

[0009] A first aspect of this application provides a magnetically isolated, full-bridge bipolar pulse generator, comprising:

[0010] Synchronous control signal generation module, magnetic isolation module, full-bridge Marx circuit module, and load;

[0011] The synchronous control signal generation module is used to generate control signal 1 and control signal 2 for input to the magnetic isolation module. Control signal 1 is used to control the conduction or cutoff of the first part of the solid-state switches in the full-bridge Marx circuit module, and control signal 2 is used to control the conduction or cutoff of the second part of the solid-state switches in the full-bridge Marx circuit module.

[0012] The magnetic isolation module is used to isolate the high-potential floating of the solid-state switch in the full-bridge Marx circuit module, and to convert the control signal 1 and the control signal 2 into control signals for the solid-state switch.

[0013] The full-bridge Marx circuit module is used to generate positive and negative adjustable square wave pulses according to the control signal of the solid-state switch, and input them to the load.

[0014] Optionally, the system further includes a host computer, which generates circuit parameters and transmits the circuit parameters to the synchronization control signal generation module, which generates control signal 1 and control signal 2 based on the circuit parameters.

[0015] Optionally, the synchronization control signal generation module includes a field-programmable gate array (FPGA), a first half-bridge circuit, and a second half-bridge circuit. The first half-bridge circuit generates the control signal 1, and the second half-bridge circuit generates the control signal 2. The input to the synchronization control signal generation module is the timing control signal output by the FPGA. The control signal 1 and the control signal 2 output by the synchronization control signal generation module are connected to the primary winding of the magnetic isolation drive coil of the magnetic isolation module.

[0016] Optionally, the full-bridge Marx circuit module includes multiple cascaded full-bridge Marx circuit units and a power supply. and load Each of the aforementioned full-bridge Marx circuit units includes a switching transistor. Switching transistor Switching transistor Switching transistor ,diode ,diode ,capacitance , i=1,2,3,…n, where n represents the number of full-bridge Marx circuit units and i represents the i-th full-bridge Marx circuit unit;

[0017] Optionally, the power supply The positive terminal is represented by terminal A, and the power supply The negative terminal is represented by terminal B, and the power supply The negative terminal is grounded;

[0018] The power supply The positive terminal is connected to the capacitor of the first full-bridge Marx circuit unit. The positive terminal of the power supply is connected. The negative terminal of the capacitor The negative terminal connection;

[0019] The switching transistor The drain of the capacitor The positive terminal connection of the switching transistor The source and the capacitor of the next full-bridge Marx circuit unit The negative terminal connection;

[0020] The switching transistor The drain of the capacitor The positive terminal connection of the switching transistor The drain of the diode The anode connection of the diode The cathode and the capacitor The positive terminal connection;

[0021] The switching transistor The source and the capacitor The negative terminal connection of the switching transistor The drain and the diode The cathode connection of the tube, the diode The anode and the capacitor The negative terminal connection;

[0022] The switching transistor The source and the capacitor The negative terminal connection of the switching transistor The drain of the capacitor The positive terminal connection;

[0023] The load One end is connected to the power supply The negative terminal connection, the load The other end is connected to the capacitor of the last full-bridge Marx circuit unit. The positive terminal connection.

[0024] Optionally, the first portion of the solid-state switch includes the switching transistor in each of the full-bridge Marx circuit units. and the switching transistor The second solid-state switch includes the switching transistor in each of the full-bridge Marx circuit units. and the switching transistor .

[0025] Optionally, the magnetic isolation module includes a magnetic ring. Magnetic ring coil coil coil coil ;

[0026] The coil and the coil Symmetrically wound on the magnetic ring respectively On both sides of the coil and the coil The winding direction is opposite, the coil One end of the coil is designated as terminal D. The other end is designated as end E, and the coil One end of the coil is designated as terminal F. The other end is designated as the G end, the D end and the G end are the same name ends, and the E end and the F end are the same name ends;

[0027] The coil and the coil Symmetrically wound on the magnetic ring respectively On both sides of the coil and the coil The winding direction is opposite, the coil One end of the coil is designated as the J-end. The other end is designated as terminal K, and the coil One end of the coil is designated as the H end. The other end is designated as the I end, the H end and the K end are terminals with the same name, and the J end and the I end are terminals with the same name.

[0028] Optionally, in the magnetic isolation module:

[0029] Switching transistor The source and the coil The D terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor The source connection;

[0030] The switching transistor The source and the coil The E terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection;

[0031] The switching transistor Drain and resistor One end is connected, the resistor The other end is connected to the diode Anode connection;

[0032] The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection;

[0033] The diode The cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P1. The source connection of the capacitor The other end is connected to the switching transistor via terminal P1. Gate connection;

[0034] Switching transistor The source and the coil The F terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor. The source connection;

[0035] The switching transistor The source and the coil The G terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection;

[0036] The switching transistor Drain and resistor One end is connected, the resistor The other end is connected to the diode. Anode connection;

[0037] The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection;

[0038] The diode The cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P3. The source connection of the capacitor The other end is connected to the switching transistor via terminal P3. Gate connection;

[0039] Switching transistor The source and the coil The H terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor The source connection;

[0040] The switching transistor The source and the coil The I terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection;

[0041] The switching transistor Drain and resistor One end, resistor The other end is connected to the diode. Anode connection;

[0042] The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection;

[0043] The diode cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P4. The source connection of the capacitor The other end is connected to the switching transistor via terminal P4. Gate connection;

[0044] Switching transistor The source and the coil The J terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor The source connection;

[0045] The switching transistor The source and the coil The K terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection;

[0046] The switching transistor Drain and resistor One end is connected, the resistor The other end is connected to the diode. Anode connection;

[0047] The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection;

[0048] The diode The cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P2. The source connection of the capacitor The other end is connected to the switching transistor via terminal P2. The gate connection.

[0049] Optionally, the magnetic rings of all the magnetic isolation modules All magnetic rings of the aforementioned magnetic isolation modules share a common primary edge. The magnetic rings of all the magnetic isolation modules are connected to the first half-bridge circuit of the synchronization control signal generation module via wires. All magnetic rings of the aforementioned magnetic isolation modules share a common primary edge. Connected to the second half-bridge circuit of the synchronous control signal generation module via a wire;

[0050] The magnetic ring The transmitted control signal 1 is used to control the switching transistor. The switching transistor The control voltage is reversed when the switching transistor... The voltage between the gate and source of the switching transistor is the positive drive voltage. When the switching transistor is in the ON state, The voltage between the gate and source of the switching transistor is a negative drive voltage. It is in the off state;

[0051] The magnetic ring The transmitted control signal 2 is used to control the switching transistor. The switching transistor The control voltage is reversed when the switching transistor... The voltage between the gate and source of the switching transistor is the positive drive voltage. When the switching transistor is in the ON state, The voltage between the gate and source of the switching transistor is a negative drive voltage. It is in the off state.

[0052] Optionally, the operation of the magnetically isolated full-bridge bipolar pulse generator includes a positive polarity output process, a charging process, and a negative polarity output process.

[0053] Optionally, when the magnetically isolated full-bridge bipolar pulse generator is in the positive polarity output process, the switching transistor... and the switching transistor When in the ON state, the switching transistor and the switching transistor When in the off state, current flows through the switching transistor. The capacitor of each of the aforementioned full-bridge Marx circuit units and the load The diode forms a discharge circuit. Blocking the capacitor After the switching transistor The switching transistor The discharge circuit;

[0054] When the magnetically isolated full-bridge bipolar pulse generator is in a charging state, the switching transistor... and the switching transistor When in the ON state, the switching transistor and the switching transistor When in the off state, current flows through the switching transistor. The capacitor of each of the aforementioned full-bridge Marx circuit units and switching transistors A charging circuit is formed, the power source The capacitor of each of the said full-bridge Marx circuit units Charging, not through the load The circuit;

[0055] When the magnetically isolated full-bridge bipolar pulse generator is in the negative polarity output process, the switching transistor... and the switching transistor When in the ON state, the switching transistor and the switching transistor When in the off state, current flows through the switching transistor. The capacitor of each of the aforementioned full-bridge Marx circuit units The load The diode forms a discharge circuit. Blocking the capacitor After the switching transistor and the switching transistor The resulting discharge circuit.

[0056] The magnetically isolated full-bridge bipolar pulse generator of this application uses a synchronous control signal generation module to generate control signal 1 and control signal 2 for the input magnetic isolation module. Control signal 1 and control signal 2 can synchronously drive all switches in the full-bridge Marx circuit module, reducing the application of power supply and energy storage capacitor required in the drive circuit. The circuit topology is simple, the number of components is small, the control is simple, and the cost is reduced. It can output square wave pulses with adjustable polarity, pulse width, and pulse interval. Furthermore, through modular design, the drive mode can be switched, and the output voltage can be increased by stage superposition, thereby improving reliability.

[0057] Other technical effects resulting from the additional features will be further illustrated in the corresponding embodiments. Attached Figure Description

[0058] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0059] Figure 1 This is a schematic diagram of the overall structure of a magnetically isolated driven full-bridge bipolar pulse generator according to an exemplary embodiment.

[0060] Figure 2 This is a schematic diagram of the circuit topology of a full-bridge Marx circuit module according to an exemplary embodiment.

[0061] Figure 3 This is a schematic diagram of the circuit topology of a magnetic isolation module according to an exemplary embodiment.

[0062] Figure 4 This is a schematic diagram illustrating the operation of a full-bridge Marx circuit module according to an exemplary embodiment.

[0063] Figure 5 This is a schematic diagram illustrating the operation of a magnetically isolated module during the charging process of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment.

[0064] Figure 6 This is a schematic diagram illustrating the operation of a magnetically isolated module in the positive polarity output process of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment.

[0065] Figure 7This is a schematic diagram illustrating the operation of a magnetically isolated module in the negative polarity output process of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment.

[0066] Figure 8 The diagram shows the timing and waveform of the positive output of a magnetically isolated, full-bridge bipolar pulse generator according to an exemplary embodiment.

[0067] Figure 9 The following is a timing diagram and waveform diagram of the negative polarity output of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment. Detailed Implementation

[0068] The present application will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These all fall within the protection scope of the present application.

[0069] In the description of the embodiments of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0071] In the description of the embodiments in this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0072] The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or devices.

[0073] Existing bipolar Marx circuits mostly employ dual-Marx and full-bridge configurations. Dual-Marx topologies offer higher switching voltage utilization, but require twice the number of capacitors for the same voltage compared to unipolar circuits, resulting in a larger number of components. Full-bridge topologies require the same number of capacitors as unipolar circuits at the same voltage, but require more switches and are more complex to control. To address these issues, this application provides a magnetically isolated, full-bridge bipolar pulse generator to solve these problems.

[0074] Figure 1 This is a schematic diagram of the overall structure of a magnetically isolated driven full-bridge bipolar pulse generator according to an exemplary embodiment.

[0075] Reference Figure 1 As shown in one embodiment of this application, a magnetically isolated full-bridge bipolar pulse generator is provided, comprising: a synchronous control signal generation module, a magnetic isolation module, a full-bridge Marx circuit module, and a load.

[0076] The synchronous control signal generation module is used to generate control signal 1 and control signal 2 for the input magnetic isolation module. Control signal 1 is used to control the conduction or cutoff of the first part of the solid-state switches in the full-bridge Marx circuit module, and control signal 2 is used to control the conduction or cutoff of the second part of the solid-state switches in the full-bridge Marx circuit module.

[0077] The magnetic isolation module is used to isolate the high-potential floating of the solid-state switch in the full-bridge Marx circuit module and convert control signal 1 and control signal 2 into control signals for the solid-state switch.

[0078] The full-bridge Marx circuit module is used to generate positive and negative adjustable square wave pulses based on the control signals from the solid-state switch, and then input them to the load.

[0079] In the above embodiments of this application, a synchronous control signal generation module is used to generate control signal 1 and control signal 2 for the input magnetic isolation module. Control signal 1 and control signal 2 can synchronously drive all switches in the full-bridge Marx circuit module, reducing the application of power supply and energy storage capacitor required in the drive circuit. The circuit topology is simple, the number of components is small, the control is simple, and the cost is reduced. It can output square wave pulses with adjustable polarity, pulse width, and pulse interval. Furthermore, through modular design, the driving mode can be switched, and the output voltage can be increased by superposition of stages, thereby improving reliability.

[0080] Reference Figure 1 As shown in some specific embodiments of this application, a magnetically isolated driven full-bridge bipolar pulse generator further includes a host computer. The host computer is used to set circuit parameters and transmit the circuit parameters to a synchronous control signal generation module. The synchronous control signal generation module generates control signal 1 and control signal 2 according to the circuit parameters.

[0081] Specifically, the circuit parameters set by the host computer may include, but are not limited to: output polarity, which can be positive, negative or bipolar; output pulse width, which is the time of a single discharge; pulse interval, which is the time interval between two discharges; and number of pulses, which is the number of discharges.

[0082] In some specific embodiments of this application, the synchronization control signal generation module includes a field-programmable gate array, a first half-bridge circuit, and a second half-bridge circuit. The first half-bridge circuit is used to generate control signal 1, and the second half-bridge circuit is used to generate control signal 2. The input of the synchronization control signal generation module is the timing control signal output by the field-programmable gate array. The control signal 1 and control signal 2 output by the synchronization control signal generation module are connected to the primary winding of the magnetic isolation drive coil of the magnetic isolation module.

[0083] Specifically, the synchronous control signal generation module outputs control signal 1 and control signal 2 that meet the requirements of the set circuit parameters through the input of the timing control signal of the field programmable gate array.

[0084] The control signal 1 output from the synchronous control signal generation module is input to the magnetic ring of the magnetic isolation module. The control signal 2, which is the output of the synchronous control signal and is common to the primary side, is input to the magnetic ring of the magnetic isolation module. The original border.

[0085] Figure 2 This is a schematic diagram of the circuit topology of a full-bridge Marx circuit module according to an exemplary embodiment.

[0086] Reference Figure 2 As shown in some specific embodiments of this application, the full-bridge Marx circuit module includes multiple cascaded full-bridge Marx circuit units and a power supply. and load Each full-bridge Marx circuit unit includes a switching transistor. Switching transistor Switching transistor Switching transistor ,diode ,diode ,capacitance , i=1,2,3,…n, where n represents the number of full-bridge Marx circuit units and i represents the i-th full-bridge Marx circuit unit.

[0087] Specifically, power supply The positive terminal is represented by terminal A, the power supply. The negative terminal is represented by B, the power supply. The negative terminal is grounded.

[0088] power supply The positive terminal is connected to the capacitor of the first full-bridge Marx circuit unit. positive terminal connection, power supply negative terminal and capacitor The negative terminal connection;

[0089] Switching transistor Drain and capacitor Positive terminal connection, switching transistor The source and the capacitor of the next full-bridge Marx circuit unit The negative terminal connection;

[0090] Switching transistor Drain and capacitor Positive terminal connection, switching transistor Drain and diode Anode connection, diode Cathode and capacitor The positive terminal connection;

[0091] Switching transistor Source and capacitor Negative connection, switching transistor Drain and diode Cathode connection of the tube, diode anode and capacitor The negative terminal connection;

[0092] Switching transistor Source and capacitor Negative connection, switching transistor Drain and capacitor The positive terminal connection;

[0093] load One end is connected to the power supply Negative connection, load The other end is connected to the capacitor of the last full-bridge Marx circuit unit. The positive terminal connection.

[0094] In some specific embodiments of this application, the first portion of the solid-state switch in the full-bridge Marx circuit module includes the switching transistor in each full-bridge Marx circuit unit. and switching transistor The second part of the solid-state switching in the full-bridge Marx circuit module includes the switching transistors in each full-bridge Marx circuit unit. and switching transistor .

[0095] In some specific embodiments of this application, all solid-state switches in the full-bridge Marx circuit module Both use MOSFET switches.

[0096] Figure 3 This is a schematic diagram of the circuit topology of a magnetic isolation module according to an exemplary embodiment.

[0097] Reference Figure 3 As shown in some specific embodiments of this application, the magnetic isolation module includes: a magnetic ring. Magnetic ring coil coil coil coil .

[0098] coil and coil Symmetrically wound on magnetic rings On both sides of the coil and coil The winding direction is opposite, the coil One end is designated as terminal D, and the coil The other end is designated as terminal E, the coil. One end is designated as terminal F, and the coil The other end is called the G end, the D end is the same as the G end, and the E end is the same as the F end.

[0099] coil and coil Symmetrically wound on magnetic rings On both sides of the coil and coil The winding direction is opposite, the coil One end is designated as the J-end, and the coil The other end is designated as terminal K, the coil. One end is designated as the H end, and the coil The other end is designated as the I end, the H end and the K end are the same name ends, and the J end and the I end are the same name ends.

[0100] Specifically, in the magnetic isolation module:

[0101] Switching transistor source and coil The D terminal is connected to the switching transistor. gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor The source connection;

[0102] Switching transistor source and coil The E terminal is connected to the switching transistor. gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor Drain connection;

[0103] Switching transistor Drain and resistor One end is connected to the resistor. The other end is connected to the diode Anode connection;

[0104] Switching transistor The drain is also related to the resistor. One end is connected to the resistor. The other end is connected to the diode Cathode connection;

[0105] diode Cathode and diode After the anode is connected to the capacitor One end is connected to the capacitor. The other end is connected to the switching transistor Drain connection, capacitor One end is connected to the switching transistor via terminal P1. Source connection, capacitor The other end is connected to the switching transistor via terminal P1. The gate connection.

[0106] Switching transistor source and coil F-terminal connection, switching transistor gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor. The source connection;

[0107] Switching transistor source and coil G-terminal connection, switching transistor gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor Drain connection;

[0108] Switching transistor Drain and resistor One end is connected to the resistor. The other end is connected to the diode. Anode connection;

[0109] Switching transistor The drain is also related to the resistor. One end connected, resistor The other end is connected to the diode Cathode connection;

[0110] diode Cathode and diode After the anode is connected to the capacitor One end is connected to the capacitor. The other end is connected to the switching transistor Drain connection, capacitor One end is connected to the switching transistor via terminal P3. Source connection, capacitor The other end is connected to the switching transistor via terminal P3. The gate connection.

[0111] Switching transistor source and coil H-terminal connection, switching transistor gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor The source connection;

[0112] Switching transistor source and coil The I terminal is connected to the switching transistor. gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor Drain connection;

[0113] Switching transistor Drain and resistor One end, resistor The other end is connected to the diode. Anode connection;

[0114] Switching transistor The drain is also related to the resistor. One end is connected to the resistor. The other end is connected to the diode Cathode connection;

[0115] diode Cathode and Diode After the anode is connected to the capacitor One end is connected to the capacitor. The other end is connected to the switching transistor Drain connection, capacitor One end is connected to the switching transistor via terminal P4. Source connection, capacitor The other end is connected to the switching transistor via terminal P4. The gate connection.

[0116] Switching transistor source and coil J-terminal connection, switching transistor gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor The source connection;

[0117] Switching transistor source and coil The K terminal is connected to the switching transistor. gate and resistor One end is connected to the resistor. The other end is connected to the switching transistor Drain connection;

[0118] Switching transistor Drain and resistor One end is connected to the resistor. The other end is connected to the diode. Anode connection;

[0119] Switching transistor The drain is also related to the resistor. One end is connected to the resistor. The other end is connected to the diode Cathode connection;

[0120] diode Cathode and diode After the anode is connected to the capacitor One end is connected to the capacitor. The other end is connected to the switching transistor Drain connection, capacitor One end is connected to the switching transistor via terminal P2. Source connection, capacitor The other end is connected to the switching transistor via terminal P2. The gate connection.

[0121] In some specific embodiments of this application, the magnetic isolation module may include n groups, the first... i The P1 terminal of the magnetic isolation module is connected to the first i The switching transistor of a full-bridge Marx circuit unit Connection; the i The P3 terminal of the magnetic isolation module is connected to the first i The switching transistor of a full-bridge Marx circuit unit Connection; the i The P4 terminal of the magnetic isolation module is connected to the first i The switching transistor of a full-bridge Marx circuit unit Connection; the i The P2 terminal of the magnetic isolation module is connected to the first i The switching transistor of a full-bridge Marx circuit unit connect.

[0122] Each magnetic isolation module transmits control signal 1 and control signal 2 to each full-bridge Marx circuit unit in a modular manner. Control signal 1 is converted into a switching transistor after being transmitted by the magnetic isolation module. and switching transistor The control signal 2 is converted into a switching transistor through the transmission of the magnetic isolation module. and switching transistor The control signal.

[0123] In some specific embodiments of this application, the magnetic ring of all magnetic isolation modules Common primary edge, magnetic ring of all magnetic isolation modules The magnetic ring of the entire magnetic isolation module is connected to the first half-bridge circuit of the synchronization control signal generation module via a wire. Common primary edge, magnetic ring of all magnetic isolation modules It is connected to the second half-bridge circuit of the synchronization control signal generation module via wires.

[0124] Magnetic ring The transmitted control signal 1 is used to control the switching transistor. Switching transistor The control voltage is reversed when the switching transistor... The voltage between the gate and source Positive drive voltage, switching transistor When the switching transistor is in the ON state, The voltage between the gate and source For negative drive voltage, switching transistor It is in the off state.

[0125] Conversely, when the switching transistor The voltage between the gate and source For negative drive voltage, switching transistor When the switching transistor is in the off state... The voltage between the gate and source Positive drive voltage, switching transistor It is in the conductive state.

[0126] Magnetic ring The transmitted control signal 2 is used to control the switching transistor. Switching transistor The control voltage is reversed when the switching transistor... The voltage between the gate and source Positive drive voltage, switching transistor When the switching transistor is in the ON state, The voltage between the gate and source For negative drive voltage, switching transistor It is in the off state.

[0127] Conversely, when the switching transistor The voltage between the gate and source For negative drive voltage, switching transistor When the switching transistor is in the off state... The voltage between the gate and source Positive drive voltage, switching transistor It is in the conductive state.

[0128] In some specific embodiments of this application, the working process of the full-bridge Marx circuit module includes a positive polarity output process, a charging process, and a negative polarity output process.

[0129] Figure 4 This is a schematic diagram illustrating the operation of a full-bridge Marx circuit module according to an exemplary embodiment. Figure 5 This is a schematic diagram illustrating the operation of a magnetically isolated module during the charging process of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment. Figure 6 This is a schematic diagram illustrating the operation of a magnetically isolated module in the positive polarity output process of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment. Figure 7 This is a schematic diagram illustrating the operation of a magnetically isolated module in the negative polarity output process of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment.

[0130] Reference Figure 4 As shown, Figure 4 (a) shows a schematic diagram of the charging process of a full-bridge Marx circuit module. Figure 4 (b) shows a schematic diagram of the positive polarity output process of the full-bridge Marx circuit module. Figure 4 (c) shows a schematic diagram of the negative polarity output process of the full-bridge Marx circuit module.

[0131] Reference Figure 4 As shown in (b), when the full-bridge Marx circuit module is in the positive output process, the switching transistor... and switching transistor When in the ON state, the switching transistor and switching transistor When in the off state, current flows through the switching transistor. The capacitor of each full-bridge Marx circuit unit and load Forming a discharge circuit, diode blocking capacitor After the switching transistor Switching transistor The discharge circuit.

[0132] Figure 6 (a) shows a schematic diagram of the magnetic isolation circuit of the magnetic isolation module during the switching to positive polarity output process. Figure 6 (b) shows a schematic diagram of the magnetic isolation circuit of the magnetic isolation module maintaining positive polarity output.

[0133] Specifically, refer to Figure 6 As shown in (a), when the magnetically isolated full-bridge bipolar pulse generator is in the positive polarity output process, the magnetic ring of the magnetic isolation module... The control signal 1 input is a negative pulse, and the magnetic ring of the magnetic isolation module... The transmitted control signal 2 inputs a positive pulse, which is transmitted to the capacitor through the magnetic isolation circuit of the magnetic isolation module. To capacitor Charging, thereby enabling the switching transistors of the full-bridge Marx circuit unit. and switching transistor When in the ON state, the switching transistor and switching transistor It is currently disconnected.

[0134] Reference Figure 6 As shown in (b), after the pulses of control signal 1 and control signal 2 end, the capacitor... To capacitor Without a discharge circuit, the switching transistor will remain in its current state, i.e., it will remain in that state indefinitely. and switching transistor The switching transistor remains in the ON state. and switching transistor It remains disconnected. (Refer to...) Figure 8 As shown, the full-bridge Marx circuit module continuously outputs positive pulses until the next control signal arrives.

[0135] Reference Figure 4 As shown in (a), when the magnetically isolated full-bridge bipolar pulse generator is in the charging state, the switching transistor... and switching transistor When in the ON state, the switching transistor and switching transistor When in the off state, current flows through the switching transistor. The capacitor of each full-bridge Marx circuit unit and switching transistors Forming a charging circuit, power supply The capacitors of each full-bridge Marx circuit unit Charging, not passing through load The circuit.

[0136] Figure 5 (a) shows a schematic diagram of the magnetic isolation circuit of the magnetic isolation module during the switching to charging process. Figure 5 (b) shows a schematic diagram of the magnetic isolation circuit of the magnetic isolation module maintaining the charging process.

[0137] Specifically, refer to Figure 5 As shown in (a), when the magnetically isolated full-bridge bipolar pulse generator is in the charging process, the magnetic ring of the magnetic isolation module... The control signal 1 input is a positive pulse, and the magnetic ring of the magnetic isolation module... The transmitted control signal 2 inputs a positive pulse, which is transmitted to the capacitor through the magnetic isolation circuit of the magnetic isolation module. To capacitor Charging, thereby enabling the switching transistors of the full-bridge Marx circuit unit. and switching transistor When in the ON state, the switching transistor and switching transistor It is currently disconnected.

[0138] Reference Figure 5 As shown in (b), after the pulses of control signal 1 and control signal 2 end, the capacitor... To capacitor Without a discharge circuit, the switching transistor will remain in its current state, i.e., it will remain in that state indefinitely. and switching transistor The switching transistor remains in the ON state. and switching transistor The full-bridge Marx circuit module remains in a charging state while in a disconnected state until the next control signal arrives.

[0139] Reference Figure 4 As shown in (c), when the full-bridge Marx circuit module is in the negative polarity output process, the switching transistor... and switching transistor When in the ON state, the switching transistor and switching transistor When in the off state, current flows through the switching transistor. The capacitor of each full-bridge Marx circuit unit ,load Forming a discharge circuit, diode blocking capacitor After the switching transistor and switching transistor The resulting discharge circuit.

[0140] Figure 7 (a) shows the working diagram of the magnetic isolation circuit of the magnetic isolation module during the switching of the full-bridge bipolar pulse generator driven by magnetic isolation to the negative polarity output. Figure 7 (b) shows a schematic diagram of the operation of the magnetic isolation circuit of the magnetic isolation module in the process of maintaining the negative polarity output of the full-bridge bipolar pulse generator driven by magnetic isolation.

[0141] Specifically, refer to Figure 7 As shown in (a), when the magnetically isolated full-bridge bipolar pulse generator is in the negative polarity output process, the magnetic ring of the magnetic isolation module... The control signal 1 input is a positive pulse, and the magnetic ring of the magnetic isolation module... The transmitted control signal 2 inputs a negative pulse, which is transmitted to the capacitor through the magnetic isolation circuit of the magnetic isolation module. To capacitor Charging, thereby enabling the switching transistors of the full-bridge Marx circuit unit. and switching transistor When in the ON state, the switching transistor and switching transistor It is currently disconnected.

[0142] Reference Figure 7 As shown in (b), after the pulses of control signal 1 and control signal 2 end, the capacitor... To capacitor Without a discharge circuit, the switching transistor will remain in its current state, i.e., it will remain in that state indefinitely. and switching transistor The switching transistor remains in the ON state. and switching transistor The full-bridge Marx circuit module remains in the disconnected state and continuously outputs negative polarity pulses until the next control signal arrives.

[0143] Figure 8 The diagram shows the timing and waveform of the positive output of a magnetically isolated, full-bridge bipolar pulse generator according to an exemplary embodiment.

[0144] Reference Figure 8 The figure shows the timing diagram and waveform of the positive output of a magnetically isolated full-bridge bipolar pulse generator.

[0145] exist At a certain moment, control signal 1 outputs a negative pulse, which, through the magnetic isolation module, causes the switching transistor to... On, switching transistor Disconnect; control signal 2 outputs a positive pulse, which, through the magnetic isolation module, causes the switching transistor to... On, switching transistor Disconnect; at this time, the full-bridge Marx circuit module is connected to the capacitor. , The series circuit is connected to the load in the positive direction, and a positive voltage pulse is output.

[0146] exist At any given time, there is no control signal output, and each switch maintains its previous state, while the full-bridge Marx circuit module continuously outputs positive pulses.

[0147] exist At a certain moment, both control signal 1 and control signal 2 output a positive pulse, which, through the magnetic isolation module, enables the switching transistor... , On, switching transistor , Disconnect, high voltage power supply via , To capacitor Charging: Stop pulse output and begin parallel charging.

[0148] Figure 9 The following is a timing diagram and waveform diagram of the negative polarity output of a magnetically isolated full-bridge bipolar pulse generator according to an exemplary embodiment.

[0149] Reference Figure 9 The figure shows the timing diagram and waveform of the negative polarity output of a magnetically isolated full-bridge bipolar pulse generator.

[0150] exist At a certain moment, control signal 1 outputs a positive pulse, which, through the magnetic isolation module, activates the switching transistor. Disconnect, switch transistor Turn on; control signal 2 outputs a negative pulse, which, through the magnetic isolation module, turns the switching transistor on. Disconnect, switch transistor The circuit is turned on; at this time, the full-bridge Marx circuit is connected to the capacitor. , The series circuit is reversed and directed to the load, starting to output a negative polarity pulse with superimposed negative voltage.

[0151] exist At any given time, there is no control signal output, and each switch maintains its previous state, while the full-bridge Marx circuit module continuously outputs negative polarity pulses.

[0152] exist At a certain moment, both control signal 1 and control signal 2 output a positive pulse, which, through the magnetic isolation module, enables the switching transistor... , On, switching transistor , Disconnect, high voltage power supply via , To capacitor Charging: Stop pulse output and begin parallel charging.

[0153] This application provides a magnetically isolated full-bridge bipolar pulse generator, which optimizes the Marx circuit to adapt to the magnetically isolated driving method. Compared with traditional magnetically isolated bipolar pulse sources, it reduces the energy storage capacitor by half. The circuit topology is simple, the parameters are flexibly adjustable, and multiple modules can be stacked. It also adopts a common primary-side magnetic ring magnetic isolation driving method, which requires only two bipolar signals from the primary side to synchronously drive all switches in the Marx circuit, thereby greatly reducing the number of components required in the driving circuit. It can achieve a pulse voltage output that is flexibly adjustable from 0 to ±10kV and 3 to 10μs, as well as positive and negative polarity output switching on the microsecond scale, providing good technical support for the application of pulse power equipment in pulse electric field ablation.

[0154] The preferred features in the above embodiments can be used individually in any embodiment, or in any combination thereof, provided they do not conflict with each other. Furthermore, parts not described in detail in the embodiments can be implemented using existing technologies.

[0155] The specific embodiments of this application have been described above. It should be understood that this application is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this application. The above-described preferred features can be used in any combination without conflict.

Claims

1. A magnetically isolated, fully-bridged bipolar pulse generator, characterized in that, include: Synchronous control signal generation module, magnetic isolation module, full-bridge Marx circuit module, and load; The synchronous control signal generation module is used to generate control signal 1 and control signal 2 for input to the magnetic isolation module. Control signal 1 is used to control the conduction or cutoff of the first part of the solid-state switches in the full-bridge Marx circuit module, and control signal 2 is used to control the conduction or cutoff of the second part of the solid-state switches in the full-bridge Marx circuit module. The magnetic isolation module is used to isolate the high-potential floating of the solid-state switch in the full-bridge Marx circuit module, and to convert the control signal 1 and the control signal 2 into control signals for the solid-state switch. The full-bridge Marx circuit module is used to generate positive and negative adjustable square wave pulses according to the control signal of the solid-state switch, and input them to the load. The full-bridge Marx circuit module includes multiple cascaded full-bridge Marx circuit units and a power supply. and load Each of the aforementioned full-bridge Marx circuit units includes a switching transistor. Switching transistor Switching transistor Switching transistor ,diode ,diode ,capacitance , i=1,2,3,…n, where n represents the number of full-bridge Marx circuit units and i represents the i-th full-bridge Marx circuit unit; The power supply The positive terminal is represented by terminal A, and the power supply The negative terminal is represented by terminal B, and the power supply The negative terminal is grounded; The power supply The positive terminal is connected to the capacitor of the first full-bridge Marx circuit unit. The positive terminal of the power supply is connected. The negative terminal of the capacitor The negative terminal connection; The switching transistor The drain of the capacitor The positive terminal connection of the switching transistor The source and the capacitor of the next full-bridge Marx circuit unit The negative terminal connection; The switching transistor The drain of the capacitor The positive terminal connection of the switching transistor The drain of the diode The anode connection of the diode The cathode and the capacitor The positive terminal connection; The switching transistor The source and the capacitor The negative terminal connection of the switching transistor The drain and the diode The cathode connection of the tube, the diode The anode and the capacitor The negative terminal connection; The switching transistor The source and the capacitor The negative terminal connection of the switching transistor The drain of the capacitor The positive terminal connection; The load One end is connected to the power supply The negative terminal connection, the load The other end is connected to the capacitor of the last full-bridge Marx circuit unit. The positive terminal connection; The first portion of the solid-state switch includes the switching transistor in each of the full-bridge Marx circuit units. and the switching transistor The second solid-state switch includes the switching transistor in each of the full-bridge Marx circuit units. and the switching transistor ; The magnetic isolation module includes a magnetic ring. Magnetic ring coil coil coil coil ; The coil and the coil Symmetrically wound on the magnetic ring respectively On both sides of the coil and the coil The winding direction is opposite, the coil One end of the coil is designated as terminal D. The other end is designated as end E, and the coil One end of the coil is designated as terminal F. The other end is designated as the G end, the D end and the G end are the same name ends, and the E end and the F end are the same name ends; The coil and the coil Symmetrically wound on the magnetic ring respectively On both sides of the coil and the coil The winding direction is opposite, the coil One end of the coil is designated as the J-end. The other end is designated as terminal K, and the coil One end of the coil is designated as the H end. The other end is designated as the I end, the H end and the K end are terminals with the same name, and the J end and the I end are terminals with the same name; In the magnetic isolation module: Switching transistor The source and the coil The D terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor The source connection; The switching transistor The source and the coil The E terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection; The switching transistor Drain and resistor One end is connected, the resistor The other end is connected to the diode Anode connection; The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection; The diode The cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P1. The source connection of the capacitor The other end is connected to the switching transistor via terminal P1. Gate connection; Switching transistor The source and the coil The F terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor. The source connection; The switching transistor The source and the coil The G terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection; The switching transistor Drain and resistor One end is connected, the resistor The other end is connected to the diode. Anode connection; The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection; The diode The cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P3. The source connection of the capacitor The other end is connected to the switching transistor via terminal P3. Gate connection; Switching transistor The source and the coil The H terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor The source connection; The switching transistor The source and the coil The I terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection; The switching transistor Drain and resistor One end, resistor The other end is connected to the diode. Anode connection; The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection; The diode cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P4. The source connection of the capacitor The other end is connected to the switching transistor via terminal P4. Gate connection; Switching transistor The source and the coil The J terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor The source connection; The switching transistor The source and the coil The K terminal is connected to the switching transistor. gate and resistor One end is connected, the resistor The other end is connected to the switching transistor Drain connection; The switching transistor Drain and resistor One end is connected, the resistor The other end is connected to the diode. Anode connection; The switching transistor The drain is also related to the resistor. One end is connected, the resistor The other end is connected to the diode Cathode connection; The diode The cathode and the diode After the anode is connected to the capacitor One end of the capacitor is connected to the capacitor. The other end is connected to the switching transistor The drain connection of the capacitor One end is connected to the switching transistor via terminal P2. The source connection of the capacitor The other end is connected to the switching transistor via terminal P2. The gate connection.

2. The magnetically isolated driven full-bridge bipolar pulse generator according to claim 1, characterized in that, It also includes a host computer, which generates circuit parameters and transmits the circuit parameters to the synchronization control signal generation module, which generates control signal 1 and control signal 2 according to the circuit parameters.

3. The magnetically isolated driven full-bridge bipolar pulse generator according to claim 2, characterized in that, The synchronization control signal generation module includes a field-programmable gate array (FPGA), a first half-bridge circuit, and a second half-bridge circuit. The first half-bridge circuit generates the control signal 1, and the second half-bridge circuit generates the control signal 2. The input to the synchronization control signal generation module is the timing control signal output by the FPGA. The control signal 1 and the control signal 2 output by the synchronization control signal generation module are connected to the primary winding of the magnetic isolation drive coil of the magnetic isolation module.

4. The magnetically isolated driven full-bridge bipolar pulse generator according to claim 1, characterized in that, Magnetic rings of all the magnetic isolation modules All magnetic rings of the aforementioned magnetic isolation modules share a common primary edge. The magnetic rings of all the magnetic isolation modules are connected to the first half-bridge circuit of the synchronization control signal generation module via wires. All magnetic rings of the aforementioned magnetic isolation modules share a common primary edge. Connected to the second half-bridge circuit of the synchronous control signal generation module via a wire; The magnetic ring The transmitted control signal 1 is used to control the switching transistor. The switching transistor The control voltage is reversed when the switching transistor... The voltage between the gate and source of the switching transistor is the positive drive voltage. When the switching transistor is in the ON state, The voltage between the gate and source of the switching transistor is a negative drive voltage. It is in the off state; The magnetic ring The transmitted control signal 2 is used to control the switching transistor. The switching transistor The control voltage is reversed when the switching transistor... The voltage between the gate and source of the switching transistor is the positive drive voltage. When the switching transistor is in the ON state, The voltage between the gate and source of the switching transistor is a negative drive voltage. It is in the off state.

5. The magnetically isolated driven full-bridge bipolar pulse generator according to claim 4, characterized in that, The operation of the magnetically isolated full-bridge bipolar pulse generator includes a positive output process, a charging process, and a negative output process.

6. The magnetically isolated driven full-bridge bipolar pulse generator according to claim 5, characterized in that, When the magnetically isolated full-bridge bipolar pulse generator is in the positive polarity output process, the switching transistor... and the switching transistor When in the ON state, the switching transistor and the switching transistor When in the off state, current flows through the switching transistor. The capacitor of each of the aforementioned full-bridge Marx circuit units and the load The diode forms a discharge circuit. Blocking the capacitor After the switching transistor The switching transistor The discharge circuit; When the magnetically isolated full-bridge bipolar pulse generator is in a charging state, the switching transistor... and the switching transistor When in the ON state, the switching transistor and the switching transistor When in the off state, current flows through the switching transistor. The capacitor of each of the aforementioned full-bridge Marx circuit units and switching transistors A charging circuit is formed, the power source The capacitor of each of the said full-bridge Marx circuit units Charging, not through the load The circuit; When the magnetically isolated full-bridge bipolar pulse generator is in the negative polarity output process, the switching transistor... and the switching transistor When in the ON state, the switching transistor and the switching transistor When in the off state, current flows through the switching transistor. The capacitor of each of the aforementioned full-bridge Marx circuit units The load The diode forms a discharge circuit. Blocking the capacitor After the switching transistor and the switching transistor The resulting discharge circuit.

Images