83 results about "Voltage multiplier" patented technology

The invention discloses a current type electric shock weeding device, a control method and a weeding system. The device comprises a battery side voltage source; the primary side full-bridge inverter circuit is connected with the battery side voltage source; the voltage doubling circuit is used for generating high-voltage direct current output; the primary side of the transformer winding is connected with the midpoint of the primary side full-bridge inverter circuit, and the secondary side of the transformer winding is connected with the voltage doubling circuit; and the phase shift control module is configured to change the phase shift duty ratio phi = theta / pi by adjusting the phase shift angle theta and control the output current. The embodiment of the invention aims to provide a DC-DC converter which is free of ripples, has a constant-current characteristic and is simple to control for the field of electric shock weeding.

The invention discloses a zero-input current ripple wide-gain DC-DC converter and a control method, the zero-input current ripple wide-gain DC-DC converter comprises a zero-ripple boost unit and a voltage multiplication unit which are connected in sequence, and the zero-ripple boost unit comprises a first inductor, a second inductor, a third capacitor, a fourth capacitor, a first power switch and a third diode; the voltage multiplication unit comprises a first capacitor, a second capacitor, a first diode, a second diode, a third diode, a third inductor and a second power switch. By introducing the zero-ripple boost unit, the zero-input ripple characteristic is realized while the voltage gain is improved, and meanwhile, the voltage multiplication unit is introduced, so that the structure has a function similar to that of a switched capacitor and optimizes the energy circulation of the switched capacitor; therefore, the voltage gain of the converter is further improved, and the voltage and current stress of the semiconductor device is reduced.

The invention belongs to the technical field of cardiovascular diseases, and discloses a booster circuit applied to an implantable cardioverter defibrillator, and the circuit system is composed of a BOOST booster circuit, a charge pump voltage doubling circuit, a high-voltage feedback and control circuit, and a high-voltage energy storage capacitor. According to the invention, the boost circuit is integrated with BOOST and charge pump voltage doubling technologies, and a switching device is accurately controlled through PWM, so that the input DC voltage can be greatly improved; the BOOST circuit lays a foundation for boosting, the charge pump voltage doubling circuit achieves secondary multiplication on the BOOST circuit, the voltage is increased by n + 1 times, n can be flexibly set according to a unit structure, the high-voltage feedback and control circuit monitors the voltage of an energy storage capacitor in real time, boosting starting and stopping are automatically controlled by comparing Vhv with Vref, it is ensured that the output voltage is accurate and stable, and the output voltage is stable. By means of the combination, the large step-up ratio is achieved, the step-up amplitude can be flexibly adjusted according to actual requirements, reliable high-voltage energy is provided for the ICD, and the strict requirements of defibrillation for high voltage and high energy are met.

The invention provides a parameter design method for a multi-voltage rectification LCC converter, and the method comprises the steps: building a voltage precise mathematical model of a resonant cavity parallel capacitor through employing a fundamental wave equivalent method based on the condition that output capacitors of the multi-voltage rectification LCC converter and a multi-voltage rectifier participate in resonance; the gain of the voltage-multiplying LCC resonant converter is modeled through a voltage accurate mathematical model of a resonant cavity shunt capacitor; determining the number of rectifier bridges, the turn ratio of a transformer and the capacitance value of a rectification voltage-multiplying capacitor according to the voltage of the parallel capacitor of the resonant cavity and the gain of the voltage-multiplying LCC resonant converter; and determining values of the resonant cavity series-parallel capacitor and the resonant cavity inductor according to the capacitance value of the rectification voltage-multiplying capacitor. According to the method, analysis and calculation of the output filter capacitance are incorporated into parameter design of accurate modeling, a scheme for selecting the number of the voltage doubling rectifier bridges is given, and the size can be reduced and economic benefits can be increased under the condition that working condition requirements are met.

The invention provides a handheld shock wave generating system which comprises a shock wave balloon and a driving circuit, and the driving circuit comprises a primary power supply circuit, a high-voltage booster circuit, a voltage doubling circuit and a control circuit. After a voltage signal VCCS2 output by the primary power supply circuit is subjected to self-oscillation and boosting of the high-voltage boosting circuit and multiple rounds of voltage multiplication of the voltage doubling circuit, the voltage signal VCCS2 can be increased by hundreds or even thousands of times, a storage battery and a mains supply do not need to be used, miniaturization can be achieved, and carrying is convenient.

The utility model belongs to the technical field of voltage conversion, and particularly discloses a conversion circuit for converting direct-current low voltage into pulse high voltage, which comprises a power switch driving circuit, a power switch circuit, a pulse boosting transformer, a voltage multiplier circuit and a signal feedback circuit, the output end of the power switch driving circuit is connected with the driving end of the power switch circuit, the input end of the power switch circuit is connected with an input power supply, and the output end of the power switch circuit is connected with the input end of the pulse boosting transformer; the output end of the pulse boosting transformer is connected with the input end of the voltage multiplier; the output end of the voltage multiplier is connected with the input ends of the rear-end equipment and the signal feedback circuit; and the output end of the signal feedback circuit is connected with the input end of the power switch driving circuit. The utility model can reduce the requirement of the input power supply on the input current.

A system for controlling power provided to an electronic device is disclosed herein. The system includes a switching direct current (DC) power source configured to provide an input voltage at a first frequency, a forward converter coupled to the switching DC power source, wherein the forward converter outputs a first voltage and a second voltage, a frequency multiplier coupled to the forward converter and configured to receive the first voltage as an input, a switch coupled to the frequency multiplier and configured to be driven by the frequency multiplier, wherein the switch outputs a fourth voltage, and a voltage multiplier coupled to the switch and configured to be driven by the switch, wherein the voltage multiplier receives the second voltage and outputs a fifth voltage that is greater than the second voltage.

This invention proposes a quadratic dual-coupled inductor DC-DC converter, belonging to the technical field of power electronic converters. Based on a quadratic cascaded boost converter, the quadratic dual-coupled inductor DC-DC converter splits the input current into two branches on the input side, and both switching transistors are simultaneously turned on and off. Two sets of coupled inductors are introduced on the input side, and several capacitors and diodes are added on the output side to form a CLC coupled inductor voltage multiplier unit. This invention has high voltage gain and is suitable for new energy power generation systems such as fuel cells and photovoltaic cells.

The present invention discloses a high-voltage DC circuit topology. In the high-voltage DC circuit topology, the positive pole of the DC power supply DC is connected to the positive terminal of the bus capacitor C0 via the diode D1, and the negative pole is connected to the negative terminal of the bus capacitor C0; the positive terminal of the bus capacitor C0 is connected to the common drain of the fault current limiting unit and the full-bridge circuit, and the negative terminal is connected to the common source of the full-bridge circuit to form a radio frequency oscillator. The primary winding of the radio frequency transformer T1 is connected in parallel with the tuning capacitor C2. The radio frequency feed electrode a is connected to the a end of the first secondary winding of the radio frequency transformer, and the radio frequency feed electrode b is connected to the b end of the second secondary winding of the radio frequency transformer. A voltage multiplier is placed between the radio frequency feed electrode a and the radio frequency feed electrode b to achieve voltage superposition. The voltage multiplier is composed of a cascade of multiple radio frequency energy coupling electrodes and radio frequency rectifiers. One end of the parallel resonance filter is connected to the last-stage radio frequency energy coupling electrode of the voltage multiplier, and the other end is connected to the load to achieve a DC voltage with low ripple on the load.

A system for harvesting power from AC current in a power line, including a split magnetic core having two halves, wherein the two halves of the magnetic core are configured to enclose around the power line; a coil is wrapped around one or two halves of the magnetic core with a first end and a second end of the coil configured to provide current from the coil; a power harvesting circuit is configured to harvest current from AC current in the power line, the power harvesting circuit including a rectifier and at least one voltage multiplier electrically connected in parallel to the rectifier; and wherein an output of the coil is connected to an input of said power harvesting circuit and an output of the power harvesting circuit is configured to supply voltage and current to load circuits.

This invention relates to an active dual-switched capacitor coupled DC / DC converter with a reverse magnetic winding, belonging to the field of optics. It solves the problem that existing DC converters cannot simultaneously achieve low turns ratios and high voltage gain. The invention combines inductors, capacitors, diodes, and coupled inductors (N1, N2) in a specific series-cross connection to form an integrated high-gain unit. Through a reverse-coupled inductor voltage multiplier circuit (composed of multi-winding coupled inductors N1 and N2 connected in reverse, diode D1, and capacitor C1) and an active dual-switched capacitor structure (composed of power switches S1 and S2, capacitor C2, and diodes D2 and D3), the proposed converter can generate high voltage gain at low turns ratios. This invention is primarily applied in high boost ratio DC power conversion applications.

The invention discloses a wind turbine generator blade deicing and lightning protection device and method, and belongs to the technical field of wind turbine lightning protection, the device comprises a voltage doubling rectifier, a capacitor and a main power line which are connected in sequence, and further comprises a plurality of heating units embedded in the surface of a blade, and each heating unit is connected with the main power line through a branch power line. The main power line is further connected with a galvanometer used for detecting thundercloud charges, the output end of the galvanometer is connected with the voltage-doubler rectifier through a control unit, and the control unit is used for controlling positive and negative electrode switching of direct-current voltage output by the voltage-doubler rectifier according to the detection result of the galvanometer, so that charges carried by the heating units are the same as the thundercloud charges. According to the device, active lightning protection can be achieved while the blade is deiced.

The utility model discloses a device for detecting functions of a circuit board of an electric flame stove. The device comprises a power box, a test board and a prompt board, the test board is provided with at least 18 test pins, and the test pins are in one-to-one correspondence with the output ends of the N voltage-multiplying units on the tested circuit board. The prompt board is provided with prompt lamps with the number equal to that of the test pins, each prompt lamp is electrically connected with the lower end of the corresponding test pin, and the other electrode end of each prompt lamp is electrically connected with the negative electrode of the power box. According to the utility model, the N test pins in one-to-one correspondence with the output ends of the voltage-multiplying units are arranged on the test board, so that the performance of all the voltage-multiplying units of the circuit board can be tested at the same time at one time, and the test efficiency is improved.

This disclosure describes systems, methods, and apparatuses for a power supply, the power supply configured for monitoring a voltage at an output end of the power supply; controlling, based on the voltage exceeding a first threshold, a first switch to connect a plurality of secondary windings of the power supply in series; and controlling, based on the voltage exceeding a second threshold, at least one other switch to switch in at least one capacitor into the power supply, wherein the second threshold is greater than the first threshold.

A generator with a regeneration device. The electrosurgical generator according to the invention includes an oscillating circuit excited by means of an excitation circuit having a frequency preferably close to its resonant frequency, wherein the oscillation should be periodically interrupted. This can be done, for example, in situations where a pulse-pause modulation of a radio frequency voltage must be created, the fundamental frequency of which, for example, 350 kHz or 500 kHz, can be modulated with a modulation frequency of, for example, 50 kHz. To stop the oscillation in the generator's oscillating circuit as abruptly as possible without losing the energy stored in the oscillating circuit, a regeneration circuit is provided, implemented by means of a voltage multiplier circuit. Compared to a boost converter coupled inductor, it has the advantage of providing a low capacitive load to the oscillating circuit, especially because it is only electrically effectively connected to the oscillating circuit via a switch during the regeneration phase. This concept allows for efficient energy regeneration and therefore allows for precise amplitude modulation of the radio frequency voltage, particularly square wave modulation (on-off-switch).

The invention relates to a high-power direct-current power supply boosting method and device and a three-phase rectification voltage doubling device, which are applied to occasions requiring direct-current boosting, and the direct-current boosting device comprises a power supply VIN, an inductor L, a switch K1, a switch K2, a diode D1, a diode D2, a capacitor C1, a capacitor C2 and a load resistor RL. The method comprises the following steps: alternately controlling the on and off actions of the switch K1 and the switch K2, the output voltage VO of the direct current boosting device is smaller than or equal to 2VI, the output voltage VO is the voltage at the two ends of the load resistor RL, and the VI is the input voltage between the positive electrode end S1 and the negative electrode end S2 of the power supply VIN. The three-phase alternating-current power supply can be applied to various application scenes, has no requirement on input current harmonics (during three-phase alternating-current input), and can provide required output voltage with lower cost and higher reliability, so that various compressors popular in the market can be used, convenience is brought to complete machine manufacturers, and the cost is reduced.

To provide a resonant converter for a corona generator.SOLUTION: One example provides a corona generator including a resonant converter, a voltage multiplier circuit, a driver circuit, a driver circuit power source, and a controller. The voltage multiplier circuit is connected to the resonant converter, and is configured to amplify a converter output voltage of the resonant converter, and thereby generate output of the corona generator. The driver circuit is connected to the resonant converter, and is configured to supply a driver signal to the resonant converter. The driver circuit power source is configured to supply power to the driver circuit. The controller is configured to receive a voltage feedback indicating the voltage of the output of the corona generator, compare the voltage feedback with a desired output voltage of the output of the corona generator, and transmit a command to the driver circuit power source in order to adjust the amount of power supplied to the driver circuit.SELECTED DRAWING: Figure 1

This invention relates to the field of high-voltage electrostatic powder coating equipment technology, specifically providing a voltage multiplier assembly for a high-voltage electrostatic powder coating high-voltage pack. The assembly includes a circuit board, multiple voltage multiplier components, and a connection structure. The circuit board integrates pre-set wiring circuits and mounting positions, each corresponding to a voltage multiplier component. The voltage multiplier components are fixedly mounted on their respective mounting positions. Multiple voltage multiplier components are electrically connected through the pre-set wiring circuits on the circuit board, forming a complete voltage multiplier rectifier circuit. The connection structure is located on the circuit board and is used to fix the voltage multiplier assembly to other components of the high-voltage pack specifically used for the powder coating process. During assembly, the voltage multiplier components are simply soldered to their corresponding mounting positions and then fixed using the connection structure. This simplifies the process, makes operation convenient and quick, and can adapt to the needs of large-scale production, providing support for the mass production of high-voltage packs specifically used for the powder coating process.

The application belongs to the technical field of electronic measurement, and discloses a semiconductor device capacitance voltage test system and method. The power supply circuit based on the combination of high-frequency PWM voltage increase and symmetrical topology voltage multiplier chain is used to solve the bottleneck problem that the existing portable device is difficult to efficiently generate a wide range of symmetrical bipolar high-voltage bias in a compact volume. The differential pulse width modulation measurement circuit based on AC / DC isolation is used to inject measurement pulses with opposite phases and perform differential sampling, so as to solve the problem that the existing single-ended measurement method is extremely sensitive to common-mode noise and ground line interference, resulting in low reliability in the field environment, and improve the measurement accuracy and stability. The software timing control method based on dynamic output baseline correction is proposed, and the intelligent sequence of stabilization-evaluation output baseline-measurement-compensation is used at each bias point to solve the slow response phenomenon existing in the existing method.

Device (1) able to process a pilot control signal (CP) having at least two modes: direct current or PWM alternating, and able to generate a binary detection signal (SD) whose state indicates the mode, the device (1) comprising a voltage multiplier (D) and a comparator (C).

A device includes a capacitive element that is coupled between first and second nodes and that includes a first well region, a second well region, and a transistor. The second well region is formed in the first well region, has a different conductivity type than the first well region, and is coupled to the second node. The transistor includes source and drain regions formed in the second well region and coupled to each other and to the second node, a channel region between the source and drain regions, and a gate region over the channel region. The first well region and the gate region are coupled to each other and to the first node, whereby a capacitance of the capacitive element is increased without substantially enlarging a physical size of the capacitive element.

This disclosure describes systems, methods, and apparatuses for a power supply, the power supply configured for monitoring a voltage at an output end of the power supply; controlling, based on the voltage exceeding a first threshold, a first switch to connect a plurality of secondary windings of the power supply in series; and controlling, based on the voltage exceeding a second threshold, at least one other switch to switch in at least one capacitor into the power supply, wherein the second threshold is greater than the first threshold.

The utility model discloses a small high-voltage pack with variable parameters, which comprises a shell, a battery, a transformer, an adjustable mode circuit and a voltage doubling circuit module, the shell is a cylindrical shell, and the battery is positioned in the shell, is arranged close to the bottom surface of one end of the shell and is used for providing initial low-voltage current; the transformer is arranged on the side wall of the shell, located on one side of the battery and used for boosting voltage and converting input low voltage into high voltage. The adjustable mode circuit is arranged on the bottom surface of the other end of the shell and is connected with the battery and the transformer; the voltage doubling circuit module is arranged on the side wall of the shell and opposite to the transformer, and the high-voltage output end of the voltage doubling circuit module is arranged close to the bottom face of one end of the shell and used for generating high-voltage output. According to the utility model, the overall arrangement reduces the occupied space, simultaneously solves the spatial isolation of high voltage and low voltage, and finally realizes the output of required high voltage parameters in a small space.

Embodiments of this disclosure relate to a voltage multiplier circuit. In one embodiment, the voltage multiplier includes an input node, an output node, and first and second control nodes for receiving first and second clock signals defining two commutation states. An ordered sequence of intermediate nodes is coupled between the input and output nodes and includes two ordered subsequences. Capacitors are coupled: between each odd-numbered intermediate node in the first subsequence and the first control node; between each even-numbered intermediate node in the first subsequence and the second control node; between each odd-numbered intermediate node in the second subsequence and the corresponding odd-numbered intermediate node in the first subsequence; and between each even-numbered intermediate node in the second subsequence and the corresponding even-numbered intermediate node in the first subsequence. The circuit includes selectively conductive electronic components coupled to the intermediate nodes.

This invention discloses a laser ranging device, relating to the field of laser ranging technology. The laser ranging device includes an external power supply connection terminal, a boost circuit, a control circuit, a voltage multiplier circuit, a photoelectric converter, and a laser emitting circuit. An external voltage is connected through the external power supply connection terminal. The boost circuit raises the external voltage to a first voltage. The control circuit controls the boost circuit to periodically turn on and off. The voltage multiplier circuit further raises the first voltage and outputs it to the photoelectric converter and the laser emitting circuit. The photoelectric converter receives the laser signal reflected from the target and converts it into an electrical signal. The control circuit controls the laser emitting circuit to emit laser pulses and receives the converted electrical signal from the photoelectric converter. The distance to the target is calculated based on the time difference between the emitted laser pulse and the electrical signal. The technical solution provided by this invention can solve the problems of limited boost amplitude, complex circuitry, and high cost in existing technologies.

The utility model relates to an electron accelerator voltage-multiplying column base and an electron accelerator. The electron accelerator voltage-multiplying column base is used for connecting a tank body assembly and a voltage-multiplying column. The electron accelerator voltage-multiplying column base comprises a base module, the base module is connected with a first connecting piece and a second connecting piece, the first connecting piece is used for connecting the base module and the tank assembly, and the second connecting piece is used for connecting the base module and the voltage-multiplying column. The base module is connected with a plurality of distance adjusting mechanisms, the distance between the base module and the tank body assembly is a first distance, the distance between the base module and the voltage-multiplying column is a second distance, and the distance adjusting mechanisms are used for adjusting the first distance and / or the second distance. According to the utility model, the plurality of distance adjusting mechanisms are connected to the base module, so that the mounting perpendicularity of the voltage-multiplying column is adjusted by adjusting the distance adjusting mechanisms when the voltage-multiplying column is mounted, and the mounting precision of the voltage-multiplying column is guaranteed.

A high-voltage spiral voltage multiplier includes an outer metal film and an inner metal film which are constructed into a spiral bifilar winding configuration, a first insulating film between the outer metal film and the inner metal film, and a second insulating film between the inner metal film and a further outer metal film adjacent thereto. The outer metal film and the inner metal film are spirally bifilarly wound into N turns of winding, center positions of any two adjacent turns being axially offset by at least a predetermined offset distance.

This application discloses a high-gain, high-power-quality converter, comprising: an input DC power supply, a switching transistor, a coupled inductor, several diodes and capacitors, and a DC load; a PI control circuit is also provided. By combining a voltage multiplier unit, a switching capacitor, and a coupled inductor with a traditional boost converter, the converter can flexibly adjust the converter's duty cycle and the turns ratio of the coupled inductor according to different operating conditions, changing the voltage gain and achieving a high-voltage output. This provides the circuit with high flexibility and effectively avoids problems such as low conversion efficiency caused by the converter operating under extreme duty cycle conditions. Furthermore, when the input voltage or load changes, the converter's duty cycle is controlled and adjusted in real time to stabilize the output voltage, effectively improving the power quality of the output voltage.

The utility model discloses a distribution line detection device, which comprises an installation body, and a voltage regulator, an industrial frequency transformer, an industrial frequency voltage doubling rectifier module, a high voltage output module, a measurement module and a display module which are arranged in the installation body, the power frequency transformer is connected to the voltage regulator, the power frequency voltage doubling rectifier module is connected to the power frequency transformer, the high-voltage output module is connected to the power frequency voltage doubling rectifier module, the measurement module is connected to the high-voltage output module, and the display module is connected to the measurement module.