235results about "Electric pulse generator circuits" patented technology

The utility model provides a high-voltage pulse generating device and a test system. The high-voltage pulse generating device comprises a main control unit, a driving circuit, a pulse control circuit with a wide bandgap semiconductor power device, and an output circuit, the first end of the main control unit is coupled with the first end of the driving circuit, the second end of the driving circuit is coupled with the first end of the pulse control circuit, and the second end of the pulse control circuit is coupled with the output circuit; the main control unit is configured to generate two paths of first PWM (Pulse Width Modulation) signals with dead time control; the two paths of first PWM signals are sent to the driving circuit; and the driving circuit is configured to process the first PWM signal and then drive the pulse control circuit, so that the output circuit generates a high-voltage pulse signal. According to the utility model, the structure is simple, the cost can be greatly reduced, the output pulse speed can be flexibly set, and the CMTI test requirements of different isolated gate drivers can be met.

The invention relates to a square wave generation method and system based on a DDS signal transmitter, and belongs to the technical field of digital electronic signal synthesis. The method comprises the following steps: calculating a digital analog signal sampling frequency based on a square wave output frequency set by a user, and obtaining a digital fundamental frequency phase signal according to a phase-locked loop precision range; mapping the digital fundamental frequency phase signal into a sinusoidal amplitude signal according to a digital phase accumulation mechanism to obtain a digital-analog conversion clock, binarizing the sinusoidal amplitude signal, and outputting a square wave output period; dividing a square wave output period into a low level region and a high level region according to the precision range of the phase-locked loop, reading a square wave output frequency set by a user through a random storage address, and outputting a non-offset phase-locked square wave; and constructing an error accumulation self-checking architecture to calculate a frequency control word, and when detecting that the frequency control word has a decimal discarding error, recalculating the frequency control word.

A clock integrated circuit (100) is provided. The clock integrated circuit includes: a first clock generator (110) which includes a crystal oscillator (XTAL) configured to generate a first clock signal (fxo); and a second clock generator (120) which includes a resistance-capacitance (RC) oscillator (121) and a first frequency divider (122), and is configured to: generate a second clock signal (fRTC)using the first frequency divider (122) based on a clock signal (fRCO) output from the RC oscillator (121); perform a first calibration operation for adjusting a frequency division ratio of the first frequency divider (122) to a first frequency division ratio based on the first clock signal (fxo) ; and perform a second calibration operation for adjusting the first frequency division ratio to a second frequency division ratio based on a sensed temperature.

The utility model discloses a pulse power supply with multiple protection functions, which comprises a rectification inverter circuit and a chopper circuit, the rectification inverter circuit inputs power frequency alternating current and outputs controllable direct current, and the chopper circuit inputs controllable direct current and outputs pulse current; the inverter control circuit controls and outputs a pulse width driving signal to the rectification inverter circuit according to the voltage control signal; the multi-protection circuit comprises at least two protection circuits, the output end of each protection circuit is connected with a forward diode and then outputs the voltage control signal, and the duty ratio of the pulse width driving signal is controlled to be zero according to the voltage control signal. The beneficial effects are that multiple protection can be carried out on the pulse power supply, and the multiple protection does not interfere with each other.

The present invention relates to the technical field of pulse generating devices, and particularly to a high-energy electric pulse generating device, which includes a housing. A protective cover is installed on the surface of the housing, and a groove is provided on the inner side of the protective cover and is opened on the surface of the housing. A heat dissipation component is arranged inside the groove, and the bottom of the heat dissipation component is rotatably connected to the housing; A plurality of ventilation pipes fixedly connected to the housing are installed on the inner side surface of the groove; A heat dissipation exhaust mechanism and an air inlet cover are installed on the side surface of the housing; A shock-absorbing plate is installed on the bottom layer of the housing; When the present invention is in use, the device is installed outdoors. Once the external air flows, it can drive the first fan blade to rotate. The first fan blade drives the rotating shaft to rotate, and then drives the driving bevel gear to rotate. The driving bevel gear drives the driven bevel gear on one side to rotate, so that the driven bevel gear can drive the rotating rod and the second fan blade to rotate. At this time, the air flow inside the housing can be realized, and the purpose of dissipating heat inside the housing can be achieved.

The invention discloses a continuous current pulse generation circuit for power device testing and a control method thereof, and relates to the technical field of power electronics, the continuous current pulse generation circuit comprises a power supply, a control unit, a switch unit, an energy storage unit, an inductive load and a current absorption unit; the switch unit comprises a first relay, a second relay, a third relay, n first switches and one second switch; the energy storage unit comprises n capacitors; the control unit is used for respectively controlling the on-off of the first relay, the second relay, the third relay, the n first switches and the n second switches, carrying out different-stage control on each capacitor, and providing continuous current pulse for the test of the power device; the different stages comprise a capacitor charging stage, a capacitor discharging stage according to a time sequence and a capacitor residual charge releasing stage. According to the invention, more real continuous current pulse can be provided for the power device, and the reliability test requirement of the device under the impact of the continuous current pulse is met.

The present disclosure provides systems and methods for an output architecture for an implantable pulse generator of a neurostimulation system. The output architecture includes a power supply, a plurality of outputs, a global source current regulator coupled to the power supply and operable to source current from the power supply to the plurality of outputs through a plurality of source current branches, a global sink current regulator operable to sink current from the plurality of outputs to ground through a plurality of sink current branches, a current source branch selector operable to select, for each of the plurality of outputs, an amount of current sourced from the plurality of source current branches, and a current sink branch selector operable to select, for each of the plurality of outputs, an amount of current sunk to the plurality of sink current branches.

The utility model discloses an ultra-high-speed picosecond pulse rising edge generator, which relates to the technical field of power electronics and comprises an oscillating circuit, a multivibrator circuit and a trigger, and the oscillating circuit is electrically connected with the trigger through the multivibrator circuit. The oscillating circuit comprises a first integrated circuit, a first resistor and a first capacitor, the model of the first integrated circuit is NE555, the sixth end of the first integrated circuit is electrically connected with the third end of the first integrated circuit through the first resistor, and the sixth end of the first integrated circuit is grounded through the first capacitor; a third end of the first integrated circuit is electrically connected with an input end of the multivibrator circuit, in the ultra-high-speed picosecond pulse rising edge generator, a high-frequency oscillation circuit is output through the oscillation circuit, frequency division oscillation output is carried out through the multivibrator circuit, and therefore picosecond-level oscillation output is achieved, and finally a pulse signal is output through the trigger. The whole circuit is simple in structure, high in practicability and high in cost performance.

The utility model relates to a pulse signal generating device. The circuit comprises an ECL to TTL circuit module which is used for receiving a first clock signal input from the outside and converting the first clock signal of an ECL level into a second clock signal of a TTL level; the first driving module is used for generating a second selection control signal; the input end of the FPGA module is connected with the output end of the ECL-TTL conversion circuit module and the output end of the first driving module, and the FPGA module generates a timing pulse signal based on a second selection control signal and a second clock signal; the second driving module is connected with the output end of the FPGA and is used for performing driving processing on the timing pulse signal; the single-ended to differential module is connected with the output end of the second driving module and is used for converting the timing pulse signal subjected to driving processing into a differential signal and outputting the differential signal; and the power supply conversion module is used for converting an external input power supply into a preset voltage and providing a required working power supply for the FPGA module. And the pulse signal of the radar system can be generated more efficiently and conveniently.

To provide an ultrasonic vibrator drive circuit capable of improving high turn-on and turn-off speeds in the ultrasonic vibrator drive circuit using a voltage-driven transistor.SOLUTION: An ultrasonic vibrator drive circuit includes: a capacitor arranged in series between a secondary winding for a first switching element and the source of the first switching element; and a capacitor also arranged in series between the secondary winding of the second switching element and the source of the second switching element, thereby a gate bias voltage generated by the capacitors is added in series to a drive voltage generated by the secondary winding of the first switching element, and the gate bias voltage generated by the capacitors is also added in series to the drive voltage generated by the secondary winding of the second switching element.SELECTED DRAWING: Figure 1

The invention relates to a time sequence generating circuit, which is characterized in that a general single-bipolar timer 555 chip is selected, and a required clock signal CLK period and duty ratio are realized in cooperation with selection and matching of peripheral resistors and capacitors of the 555 chip; relay switching signals are matched with a charging and discharging circuit in which resistors and capacitors are connected in series, so that successive logic of chip selection signals and clock signals in time sequence signals is realized. The generation of a chip selection signal and a clock signal is realized only through a circuit combination of common devices such as a 555 chip and a relay; compared with a programmable chip, programming is not needed, the cost of the used chip is lower, and the reliability is higher.

The invention discloses a pulse circuit for a distributed optical fiber temperature measurement laser device and a temperature measurement device, the pulse circuit is provided with a power supply unit, a central processing unit and a pulse signal output unit, the device is provided with a machine frame, and a bottom plate is arranged in the machine frame. The bottom plate is provided with an integrated circuit board comprising a power supply unit, a central processing unit and a pulse signal output unit, a beam combiner is arranged beside the integrated circuit board, the beam combiner is connected with a coaxial refrigeration laser placed on a circuit board, a shell of the machine frame is provided with a front panel, the front panel is provided with a power supply interface, a communication COM port, an NTC interface, an SMA interface and an optical fiber outlet, and the power supply interface is connected with the central processing unit. The optical fiber outlet is communicated with the beam combiner, and the bottom plate and the shell are integrally manufactured. The circuit is applied to a distributed optical fiber temperature measurement laser device, and can solve the problems that a common distributed optical fiber temperature measurement laser device is not long enough in measurement distance, large in power consumption and not resistant to electromagnetic interference.

The application relates to a fast edge generating device and an implementation method thereof, and the device comprises a signal generator, a fast edge generator module and an amplifier module; the signal generator is used for generating a nanosecond-level square wave or pulse signal; an input end of the fast edge generator module is connected with the signal generator, is used for receiving the nanosecond-level square wave or pulse signal sent by the signal generator, and converts the nanosecond-level square wave or pulse signal into a lower edge signal; the lower edge signal is sent to the amplifier module; an input end of the amplifier module is connected with the fast edge generator module, is used for receiving the edge signal sent by the fast edge generator module, and amplifies the edge signal to a target high-voltage specification and then outputs. An input signal with extremely fast edge characteristics is generated by an external high-performance signal source, a general signal source is used to generate a signal, and the economy, flexibility and expandability of the system are significantly improved.

An example programmable digital oscillator includes digital oscillation circuitry and a digital-to-analog converter (DAC). The digital oscillation circuitry includes exactly one digital multiplier, exactly one digital adder, and exactly two registers. The digital oscillation circuitry is configured to provide digital oscillation signals at one or more frequencies as a function of a programmable code, where the programmable code is provided as input to the exactly one digital multiplier. The DAC is communicatively coupled to the digital oscillation circuitry and is configured to convert the digital oscillation signals from the digital oscillation circuitry into analog oscillation signals.

A system includes a base PSU having a voltage output, an extender PSU having a voltage output coupled in series with the voltage output of the base PSU, and a pulse switch circuit. The pulse switch circuit includes a voltage input coupled with the voltage output of the base PSU and with the voltage output of the extender PSU, a voltage output, a base switch assembly coupled in series between the voltage output of the base PSU and the voltage output of the pulse switch circuit, an extender switch assembly coupled in series between the voltage output of the extender PSU and the voltage output of the pulse switch circuit, and a clamp circuit. A controller is configured to control the base switch assembly, the extender switch assembly, and the clamp circuit based on an input received from a load sensor coupled to a load.

This application provides a signal generation method, an electronic device, a receiver, and a computer-readable storage medium, relating to the field of data processing technology, capable of outputting PPS signals with a relatively long duration. The method is applied to an electronic device, which includes a target instruction transmitting device, an AND gate circuit, a signal generation device, and an event mask register. The target instruction transmitting device is connected to the signal generation device via the AND gate circuit, and the event mask register is also connected to the signal generation device via the AND gate circuit. The method includes: configuring the event mask register to a low level during a first time period; configuring the event mask register to a high level during a second time period; the first time period and the second time period are adjacent, the second duration is longer than the first duration, the second duration is the sum of a third duration and a fourth duration, the third duration is the duration of the first time period, the fourth duration is the duration of the second time period, and the fourth duration is shorter than the first duration.

The utility model discloses an electric pulse output circuit and a massage device. Wherein the electric pulse output circuit comprises a voltage access circuit, a high voltage generation circuit and a plurality of massage electrode circuits; the voltage access circuit is connected with an external voltage source so as to obtain power supply voltage from the external voltage source, the voltage access circuit is further connected with the high voltage generation circuit, and the high voltage generation circuit obtains the power supply voltage from the external voltage source through the voltage access circuit; the high-voltage generation circuit is connected with each massage electrode circuit and is used for boosting the power supply voltage to obtain boosted voltage and sending the boosted voltage to each massage electrode circuit; a switch circuit of the massage electrode circuit is periodically in a switch-on state or a switch-off state, when the switch circuit is switched on, the massage electrode circuit outputs boost voltage, and when the switch circuit is switched off, the massage electrode circuit stops outputting the boost voltage. According to the technical scheme disclosed by the utility model, the massage effect of the electric pulse can be improved.

Embodiments of this disclosure provide an apparatus and method for generating a circuit clock signal. The apparatus includes: a clock buffer configured to buffer an original clock signal to obtain a buffered clock signal; a clock delay unit configured to delay the original clock signal to obtain a plurality of delayed clock signals, the plurality of delayed clock signals being delayed by different amounts of time relative to the original clock signal; a broadened clock generator configured to generate a broadened clock signal based on the original clock signal and the plurality of delayed clock signals, the frequency of the broadened clock signal being lower than the frequency of the original clock signal; and a clock selector configured to select one of the buffered clock signal and the broadened clock signal as the circuit clock signal based on the selection signal.

The invention relates to the technical field of power semiconductor packaging, in particular to a multi-stage modular packaging method of an MARX pulse power generator, comprising a copper substrate and at least one sub-packaging unit fixed on the copper substrate; the sub-packaging unit comprises a DBC substrate and a shell, and the shell is connected with the DBC substrate to form a hollow cavity; a high-voltage SiC MOSFET chip, a high-voltage SiC SBD chip, an integrated capacitor and a DBC substrate are arranged in the hollow cavity, the bottom face of the DBC substrate is connected with the DBC substrate, the high-voltage SiC MOSFET chip, the high-voltage SiC SBD chip and the integrated capacitor are arranged on the top face of the DBC substrate, and the high-voltage SiC MOSFET chip, the high-voltage SiC SBD chip and the high-voltage energy storage capacitor are electrically connected through bonding wires. And other gap parts of the hollow cavity are filled with silica gel. According to the Marx generator, each stage of independent subunit packaging of the Marx generator is formed by adopting modular packaging, the design of a driver is simplified, the electrical complexity caused by series connection of multiple devices is reduced, and the Marx generator has good expansibility and flexibility.

Provided are a data transmission circuit system and a data reception circuit system, which use an edge of a pulse signal. The data transmission circuit system modulates a digital signal by using time levels determined based on time differences between rising edges and falling edges of a clock pulse signal, and rising edges and falling edges of a data pulse signal. The data reception circuit system demodulates a digital signal by using time levels determined based on time differences between rising edges and falling edges of a recovered clock pulse signal, and rising edges and falling edges of a data pulse signal.

The disclosure relates to technology for generating multi-phase signals. An apparatus includes 2^n phase signal generation stages. The apparatus also includes a controller configured to provide a mode input of each of the 2^n stages with an active periodic binary signal with remaining inputs of each of the 2^n stages provided with another periodic binary signal to collectively generate a 2^n phase signal in a first mode. The controller is further configured to provide the mode input of each of 2^(n-1) odd stages with a first steady state signal and the mode input of each of 2^(n-1) even stages with a second steady state signal with remaining inputs of each of the 2^n stages provided with the same periodic binary signal as in the first mode to cause either the 2^(n-1) odd stages or the 2^(n-1) even stages to collectively generate a 2^(n-1) phase signal in a second mode.

An electrical power pulse generator system and a method of the system's operation are described herein. A main energy storage capacitor supplies a negative DC power and a kick energy storage capacitor supplies a positive DC power. A main pulse power transistor is interposed between the main energy storage capacitor and an output pulse rail and includes a main power transmission control input for controlling power transmission from the main energy storage capacitor to the output pulse rail. A positive kick pulse power transistor is interposed between the kick energy storage capacitor and the output pulse rail and includes a kick power transmission control input for controlling power transmission from the kick energy storage capacitor to the output pulse rail. A positive kick pulse power transistor control line is connected to the kick power transmission control input of the positive kick pulse transistor.

This application discloses a state adjustment method, device, electronic device, and storage medium based on a single-qubit gate, relating to qubit gate state control technology. The method includes: performing charge drive and flux drive on a superconducting qubit Fluxonium equivalent circuit; adjusting the amplitudes of an AC voltage source and an AC current source respectively to equalize the Rabi oscillation frequency of the flux drive and the charge drive; adjusting the drive frequency and the qubit frequency to meet resonance conditions; adjusting the dimensionless envelope function and the phases of the charge drive and flux drive to rotate about a rotation axis located in a first coordinate plane; and adjusting the rotation axis to different rotation angles to represent different states of the qubit. This application enables superconducting qubits to have both a low leakage error rate and fast single-quantum gate operation.

The invention discloses a low-power-consumption high-voltage pulse excitation circuit for an MEMS capacitive sensor, and solves the non-ideal problems that the power consumption is improved, the energy efficiency is reduced, the driving capability is reduced and the like when high-voltage pulse excitation is adopted in the prior art. The circuit comprises N stages of charge pump modules which are respectively used for boosting input voltage stage by stage and outputting direct-current boosting voltage corresponding to the charge pump modules; the first-stage energy storage module is used for storing the direct-current boost voltage output by the first charge pump module; the (N-1)-stage feed-forward energy storage modules are respectively used for storing direct-current boost voltages correspondingly output by the second charge pump module to the Nth charge pump module in the N-stage charge pump modules; the energy recovery high-voltage pulse generator is used for realizing dual-load energy multiplexing and alternate high-voltage excitation according to the time sequence control signal; according to the circuit, high efficiency during high-voltage pulse excitation is realized, the capacitance density is increased, and the chip area is reduced.

The utility model provides a waveform generator, which comprises a microprocessor, a pulse width modulation (PWM) conversion circuit, a first waveform oscillation circuit, a second waveform oscillation circuit, an energy storage capacitor and a constant current power supply, the output end of the PWM conversion circuit is electrically connected with the input end of the first waveform oscillation circuit and the input end of the second waveform oscillation circuit, and the first waveform oscillation circuit and the second waveform oscillation circuit each comprise a high-speed semiconductor switch. The waveform generator provided by the utility model can generate multi-frequency-point damped oscillation waveforms, a high-speed semiconductor switch is adopted in the waveform oscillation circuit, the waveform rise time is short, the repetition frequency is high, and the accuracy, reliability and strict degree of test are improved; the device is simple in structure, stable in output characteristic and wide in output voltage range, can meet different test requirements, and can accurately evaluate the immunity performance of the automobile electronic equipment in a complex electromagnetic environment.

The invention discloses a pulse forming system, and relates to the technical field of forming. The pulse forming system comprises a control module, a charging module, a pulse modulation module and a forming module, the control module is connected with the charging module, the pulse modulation module and the forming module, and the control module is used for sending a control instruction; the pulse modulation module is connected with the charging module and the forming module, the pulse modulation module comprises at least two modulation units, each modulation unit is used for outputting pulse current to the forming module according to a preset time sequence, and the preset time sequence is obtained based on a control instruction; the charging module is used for providing electric energy for the pulse modulation module, and the forming module is used for establishing an instantaneous magnetic field by using pulse current to perform pulse forming. Therefore, the forming precision, flexibility and adaptability of the pulse forming system are improved.

The utility model relates to the technical field of integrated circuits, in particular to an expansion circuit and a hub. The circuit is characterized in that when external USB equipment is inserted into a port circuit, a control circuit detects that a voltage jump signal appears in the port circuit through a first detection circuit, and the control circuit detects a port serial number of the port circuit inserted with the external USB equipment through a second detection circuit; and the control circuit controls the data transmission circuit according to the port serial number, so that the external USB equipment is in a data transmission state. According to the circuit, a computer can accurately identify which specific port of the concentrator is connected with external equipment, so that the equipment can be directly operated.

The invention provides a bipolar pulse generation system based on a time-sharing trigger Marx circuit. The bipolar pulse generation system aims at solving the problems that in the prior art, a bipolar pulse generation system is high in circuit complexity, the output capacity is limited, and the output amplitude and the pulse width cannot be adjusted. According to the system, firstly, an FPGA generates two paths of driving signals, one path of driving signals is a reference driving signal, and the other path of driving signals is an adjustable delay driving signal; the two paths of signals are driven by two avalanche triode Marx circuits, and two positive and negative unipolar pulse signals are output; and then the signals are superposed through a combiner, and bipolar pulse signals are output. According to the scheme, one path of nanosecond-level unipolar negative pulse and the other path of nanosecond-level unipolar positive pulse are synthesized, and finally nanosecond-level high-amplitude bipolar pulse of which the output amplitude is adjustable in the range of 600V to 1000V and the peak-to-peak pulse width is adjustable in the range of 0.6 ns to 1.4 ns is realized.