299results 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 the technical field of integrated circuits, and discloses a clock signal generation circuit capable of reducing EMI (Electro-Magnetic Interference) through a jittering frequency technology, which comprises a reference voltage and jittering frequency module for generating a jittering Vref signal, a frequency regulation module for generating a Vout signal, and an operational amplifier module for comparing the Vout signal with the Vref signal, according to the high-speed clock, the ring oscillator module is used for generating clock signals with jitter frequency characteristics, the enabling control module is used for generating target clock signals, clock signal energy is distributed in a related frequency range instead of a single frequency point, and the frequency spectrum of the high-speed clock is broadened to a wider field.

The invention discloses a stimulation generation circuit for a nerve stimulator, and relates to the technical field of integrated circuits, and the circuit comprises a digital circuit which is used for generating a control signal of a stimulation waveform containing specific frequency, amplitude, pulse width, interval and number of times; the stimulation current generating circuit is used for generating stimulation current; the stimulation voltage generating circuit is used for generating stimulation voltage; the control signal is used for controlling the conduction duration and the conduction sequence of the switch A, the switch B, the switch C and the switch D, and the output stage circuit generates stimulation currents with different stimulation waveforms; the conduction duration and the conduction sequence of the signal voltage switch, the switch A, the switch B, the switch C, the switch D, the charging switch and the discharging switch are controlled, and the output stage circuit generates stimulation voltages with different stimulation waveforms. According to the invention, the conduction sequence and duration of different switches of the output stage circuit are controlled through the control signal, electrical stimulation of different modes and different waveforms can be realized, and diversified stimulation treatment is realized.

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.

An operational amplifier-based hysteresis comparator and a chip are provided. The hysteresis comparator includes: an input stage and an amplification stage. The input stage includes: a first input branch and a second input branch, where the first input branch generates a first current based on the first voltage, and the second input branch generates a second current based on the second voltage. The first current is connected with a first input terminal of the amplification stage, and the second current is connected with a second input terminal of the amplification stage. An output terminal of the amplification stage outputs a first level when the first current is greater than the second current, and outputs a second level when the first current is less than the second current. The present disclosure changes the hysteresis voltage generation mode, thereby reducing the instability caused by positive feedback.

The embodiments of the present application provide a pulse generating circuit and an interlaced pulse generating circuit, wherein the pulse generating circuit comprises: an oscillation module, which receives a control signal and generates a first oscillation signal according to the control signal; a period adjustment module, which receives the first oscillation signal and a multiplier selection signal and outputs a second oscillation signal, wherein the period of the second oscillation signal is the period of the first oscillation signal adjusted based on the multiplier selection signal; a pulse conversion module, which receives the second oscillation signal and outputs a pulse signal, wherein the pulse of the pulse signal is generated based on the rising edge or the falling edge of the second oscillation signal, and the pulse period of the pulse signal is the same as the oscillation period of the second oscillation signal; the embodiments of the present application generate a pulse signal with an adjustable period, and the area of ​​the circuit layout is small, and the power consumption of the circuit is low.

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 utility model provides a clock signal generation circuit and system, a chip and electronic equipment. The clock signal generation circuit comprises a current mirror module; the switched capacitor module is connected with the first mirror image branch; the resistor module is connected with the second mirror image branch; the voltage-controlled oscillation module is connected with the second mirror image branch; wherein the second mirror current changes along with the first mirror current, and the voltage-controlled oscillation module is connected with the switched capacitor module so as to control the switched capacitor module based on clock signal feedback. The current mirror module, the switched capacitor module and the voltage-controlled oscillation module form a loop, and the switched capacitor module serves as a negative feedback module to control the magnitude of the control voltage output by the current mirror module, so that the voltage-controlled oscillation module can output a clock signal of a target frequency through negative feedback; a comparator does not need to participate in the process of generating the clock signal, and finally the influence of the delay of the comparator on the frequency precision of the oscillating circuit can be avoided.

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.

The invention relates to a passive and passive trigger pulse generation circuit. The circuit comprises a charging loop and a discharging loop, the charging loop charges the energy storage capacitor; the discharge loop comprises a voltage sensitive component, after the voltage at the two ends of the energy storage capacitor reaches the set voltage value of the voltage sensitive component, the energy storage capacitor discharges through the discharge loop, and the power pulse is loaded to the load to form the power pulse. A control mode of a power pulse and a circuit topological structure principle are innovated, a passive mode is adopted, passive triggering is carried out, and the voltage of a power source is utilized (high voltage can be directly used for charging an energy storage capacitor without being converted into low voltage to charge the energy storage capacitor) to be matched with the characteristic of a passive voltage sensitive component (generally used for circuit protection traditionally); and outputting a power pulse signal.

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 circuit device and a real-time clock device. Flexible charging control of a spare element can be performed. The circuit device includes: a main power supply terminal to which a main power supply voltage is supplied; a backup power supply terminal to which a backup power supply voltage from the backup element is supplied; a voltage detection circuit that detects a backup power supply voltage and outputs backup voltage data corresponding to the backup power supply voltage; a register unit that stores threshold voltage data; a processing circuit that compares the backup voltage data with the threshold voltage data; and a power supply control circuit that controls charging of the backup element by the main power supply voltage based on a comparison result of the processing circuit.

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.

The invention discloses a microsecond level short-time pulse wireless excitation acoustic wave sensing system, comprising: an excitation and impedance matching circuit, comprising an impedance matching network and an excitation coil; a microsecond level short-time pulse driving signal generated by a signal generator is sent to the excitation coil through the impedance matching network; the impedance matching network can adjust the impedance of the excitation coil; an energy conversion circuit, comprising an energy conversion coil connected in series through a wire and a quartz crystal oscillator with electrodes attached to the surface; the energy conversion coil and the excitation coil form a wireless inductive coupling; the short-time pulse excitation signal is transmitted to the energy conversion coil through the excitation coil, and the induced voltage formed by the energy conversion coil is directly added to the quartz crystal oscillator, and the quartz crystal oscillator is excited by the inverse piezoelectric effect; a signal receiving and detection processing unit, comprising a receiving coil, a filtering amplification circuit and an oscilloscope connected in sequence; a wire with an energy conversion circuit is passed through the receiving coil, and the wireless coupling between the receiving coil and the energy conversion circuit can be realized.

The invention provides a signal generation method, electronic equipment, a receiver and a computer readable storage medium, relates to the technical field of data processing, and can output PPS signals with a relatively large duration as a period. The method is applied to the electronic equipment, the electronic equipment comprises a target instruction sending device, an AND gate circuit, a signal generation device and an event shielding register, the target instruction sending device is connected with the signal generation device through the AND gate circuit, and the event shielding register is connected with the signal generation device through the AND gate circuit. The method comprises the following steps: configuring an event mask register to be low level in a first time period; the event shielding register is configured to be at a high level in a second time period; the first time period is adjacent to the second time period, the second time length is larger than the first time length, the second time length is the sum of the third time length and the fourth time length, the third time length is the time length of the first time period, the fourth time length is the time length of the second time period, and the fourth time length is smaller than the first time length.

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.