70 results about "Pulse circuits" patented technology

The present invention discloses a pulse generator and a pulse rod, which relate to the field of pulse circuit technology. The pulse generator includes a frequency control unit, a dual closed-loop pulse amplification unit, a digital signal processing unit and an adaptive power management unit. The frequency control unit includes an environmental sensor and a microcontroller. The microcontroller can calculate a preset pulse frequency based on information transmitted by the environmental sensor. The input end of the dual closed-loop pulse amplification unit can receive a pulse signal transmitted by the microcontroller, amplify it to a preset pulse frequency, and provide a pulse current to an electrostatic elimination needle. The digital signal processing unit can digitize the pulse signal to enhance the anti-interference ability of the pulse signal. The adaptive power management unit includes a dynamic voltage regulation module electrically connected to an external power supply, and the dynamic voltage regulation module can dynamically adjust the output voltage. The technical solution provided by the present invention can provide a pulse generator with high stability, a wide adjustment range and strong anti-interference ability.

This invention relates to the field of pulse circuit technology and discloses a high-efficiency AC power line zero-crossing detection chip, including a path selection module, a signal processing module, and a driving module. The path selection module switches the charging circuit according to the potential of the internal power supply capacitor. The signal processing module uses a feedback loop to adjust the switching level of the sampling branch and generate a zero-crossing trigger pulse signal. The driving module responds to the zero-crossing trigger pulse signal by segmentally turning on the internal power supply capacitor and the external energy supply capacitor in the initial and subsequent stages of the zero-crossing point. This invention solves the contradiction between the ultra-high input impedance sampling environment and the driving strength through a controlled hysteresis window and a segmented current injection mechanism, suppresses signal jitter, improves the timing accuracy of zero-crossing detection, and effectively reduces the static power consumption of the system.

The invention relates to the field of pulse circuit and input and output interface control, in particular to a printer USB (Universal Serial Bus) insertion detection method and equipment based on a dual delay mechanism. The method comprises the following steps: performing term registration and dual delay window arrangement by acquiring signals such as a USB insertion trigger level, and constructing a configurable sequential relationship; executing charging and discharging sequence starting and delay endurance processing, and generating an ordered expiration mark sequence; sampling for the first time and sampling for the second time based on the sequence, and constructing a judgment result through consistency comparison; and finally, completing power supply latching, enumeration configuration and state filing according to a judgment result. According to the invention, the anti-interference capability and reliability of insertion detection are effectively improved, and structured management and full-link auditing in the detection process are realized.

This invention relates to the field of voltage regulator circuit technology, specifically disclosing a thyristor gate trigger circuit, including AC input terminals Uin1 and Uin2, sampling input terminals Uin3 and Uin4, AC output terminals Uout1 and Uout2, operational amplifiers N1 and N2, a rectifier-filter voltage regulator circuit, a current-limiting pulse circuit, a synchronization signal phase-shifting circuit for adjusting the phase angle of the output pulse signal, and a phase-shifting trigger circuit. The AC input terminals Uin1 and Uin2 are synchronization signals. This invention acquires the voltage value at the output terminal of the thyristor voltage regulator circuit in real time, and adjusts the phase of the output pulse to the thyristor gate according to the magnitude of the sampled voltage value. The thyristor adapts to the phase angle of the trigger pulse, thereby achieving voltage regulation in the thyristor voltage regulator circuit. This embodiment of the thyristor gate trigger circuit has the technical effects of high pulse sensitivity and strong stability.

This invention relates to the field of high-resolution time measurement systems and integrated circuit technology, providing a time measurement circuit with a two-dimensional address-modulated TOT pulse, comprising: a common-gate transimpedance amplifier, a high-speed high-gain comparator, a current-mode logic output stage, a common-mode feedback threshold setting circuit, and a two-dimensional address-modulated TOT pulse circuit; the address modulation pulse circuit includes an address modulation pulse width circuit and an address modulation pulse amplitude circuit, wherein the address modulation pulse width circuit includes: multiple sets of first modulation units, multiple sets of second modulation units, multiple inverters, and multiple bits of first digital code; the address modulation pulse amplitude circuit includes: multiple sets of third modulation units and multiple bits of second digital code. This invention allows a single TOT signal to simultaneously carry time information, energy information, and address information, reducing wiring, improving reliability, and increasing integration density.

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.

This invention belongs to the field of power electronics and semiconductor device technology, and proposes a high-precision comparison method for transistor on-resistance. The method includes: generating and outputting a DC voltage capable of rapid adjustment and load-bearing capacity via a DC voltage adjustment module; generating and outputting a rapidly adjustable pulse signal based on the DC voltage and a pulse voltage via a gate drive module; applying the pulse signal to the transistor under test (TUT) via a power module and measuring the TUT's on-resistance under the gate drive voltage; switching the gate drive voltage within a delay on the order of microseconds to nanoseconds, and measuring the TUT's on-resistance under the switched gate drive voltage based on the pulse signal. This method can test the on-resistance of TUTs under different gate drive voltages in a pulse circuit, reducing the measurement delay from several minutes in traditional dual-pulse circuits to several nanoseconds, effectively improving the performance of transistor reliability evaluation circuits.

This invention belongs to the field of power semiconductor technology and relates to an MCT series pulse circuit. This invention employs a MOS-controlled thyristor with a cathode short-circuit structure, combining the simplicity of the MOSFET gate control circuit with the excellent surge current capability of the thyristor to provide high di / dt and high peak current. This invention uses a standard 1700V MCT device in series, combined with a voltage equalization circuit, to achieve static withstand voltage and dynamic voltage balance during MCT turn-on in an ultra-high voltage capacitive pulse circuit. Simultaneously, the drive signal output from the driver chip is transmitted to the MCT gate circuit via magnetic coupling, and then modulated by the MCT gate circuit to achieve synchronous transmission of the drive signal and synchronous conduction of the MCT, reducing the asynchrony of the series MCT turn-on and preventing voltage imbalance caused by inconsistent MCT turn-on, which could damage the device. The MCT series circuit in this invention has high synchronization and high cascading capability, allowing for multi-stage series connection to achieve ultra-high voltage series pulses.

The present application belongs to the technical field of electromagnetic relay detection, and discloses a method and device for testing the anti-interference sensitivity of an electromagnetic relay, which comprises inputting a pulse voltage to the relay coil, monitoring and recording the pulse time value at the instant when the normally closed contact of the relay is separated, and the device comprises a coil power supply, a pulse circuit and a time base timer, the coil power supply comprises a voltage adjustment circuit, the pulse circuit is electrically connected with the time base timer and used for generating a voltage pulse and applying the voltage pulse to the input end of the relay coil, and the time base timer comprises a single-chip microcomputer and a high-frequency clock circuit electrically connected with the single-chip microcomputer and used for generating a voltage pulse to drive the relay coil, when the electromagnetic relay is attracted, the single-chip microcomputer monitors the pulse time value at the instant when the normally closed contact JC is separated. The present application can obtain the voltage value and the duration of the electromagnetic relay without malfunction after the relay is connected with an interference signal, and can provide quantitative parameter guarantee for producing high-quality electromagnetic relay products.

The invention discloses a trigger pulse circuit and system, and relates to the field of measurement, and a time-delay controllable trigger circuit arranged in the trigger pulse circuit can convert a received CMOS level trigger signal into a CMOS level trigger pulse signal which can be recognized by a neutron generator high-voltage circuit when a first preset time after power-on is reached. And the neutron generator high-voltage circuit generates a neutron targeting pulse signal after receiving the CMOS level trigger pulse signal and transmits the neutron targeting pulse signal to the neutron tube, so that the neutron targeting operation can be carried out only when the storage type logging instrument is electrified for a first preset time. Neutron targeting caused by abnormal work of the storage type PNN logging instrument on the ground can be prevented, personal injury is completely eradicated, and the safety of the scheme is improved.

This invention provides a pulse detection system and method. The pulse detection system includes a laser module for emitting laser light, comprising a laser and at least one switch; an average power detection module for detecting the average voltage of multiple pulses and generating a first detection result; a peak power detection module for detecting the peak voltage of a single pulse and generating a second detection result; a control module for processing data based on the first and second detection results and outputting a corresponding signal, which controls the on / off state of the switch; and a power supply module for providing electrical energy for the system's operation. This invention enables simultaneous detection of the peak power and average power of a pulse circuit, improving the safety of the pulse detection system.

A system for protecting a MEMS relay switch system that controls electric current to a load includes a parallel resonant circuit in series with the MEMS relay switch system. The parallel resonant circuit includes an auxiliary switch in series with a capacitor configured to be pre-charged by a voltage source, and an inductor in parallel with the auxiliary switch and the capacitor. The inductor is in series with the MEMS relay switch system. A method includes receiving a signal, activating an auxiliary switch, determining if the received signal is a turn OFF or a turn ON signal, and depending on the received signal, setting a time delay within a resonant half cycle of a parallel resonant pulse circuit, turning off the auxiliary switch, and pre-charging a capacitor of the parallel resonant pulse circuit.

The present invention relates to the technical field of wireless communications. Disclosed in the present invention is a power amplifier. The power amplifier comprises a signal input end, a radio frequency amplifier and a signal output end which are electrically connected in sequence, and an average power tracking circuit. An input end of the average power tracking circuit is used for connecting a power supply and receiving an output signal of an external host computer, an output end of the average power tracking circuit is connected to an input end of a radio frequency amplifier, and the average power tracking circuit is used for converting, on the basis of a received target voltage value, a power supply voltage output by the power supply into a preset voltage to supply power to the radio frequency amplifier. The average power tracking circuit comprises a voltage conversion circuit, a comparator, a loop filter circuit, a PWM modulator, a voltage divider circuit, a pulse circuit, and a first inductor. By switching the characteristics of the loop filter, the present invention enables the power supply to achieve both fast establishment and high-precision output, thereby allowing a working voltage of the amplifier to be as low as possible, and further reducing power consumption of the power amplifier.

The invention provides a SiC MOSFET short-circuit protection circuit, which comprises a double-pulse circuit and a desaturation short-circuit protection circuit, and is characterized in that a driving chip detects the double-pulse circuit through the desaturation short-circuit protection circuit; whether the device breaks down or not is judged by judging whether the drain-source voltage of the device exceeds the set threshold voltage or not, misoperation of short-circuit protection in the switching process is effectively avoided by designing the blanking time, the charging speed of the blanking capacitor during the short-circuit fault is increased, the blanking time is remarkably shortened, the device can be turned off more quickly, and the SiC MOSFET is protected against damage. The method is especially suitable for SiC MOSFETs with higher short-circuit current and weaker short-circuit endurance capability.

The application provides a pressure wave balloon catheter, which comprises a catheter, a balloon, a first conductor, a second conductor and a wire; the balloon is arranged at the front end of the catheter, the balloon and the peripheral wall of the catheter form a closed space, and the balloon is extended into the inside of blood vessel tissue under the driving of the catheter; the peripheral wall of the catheter is inwardly recessed to form a mounting groove; or the first conductor is coated on the peripheral wall of the catheter, the first conductor and the second conductor are connected in series on a pulse circuit through the wire, the first conductor is coated on the bottom wall of the mounting groove, the second conductor is arranged on one side of the first conductor, a communication channel is arranged between the first conductor and the second conductor, and the communication channel is used for connecting the first conductor and the second conductor and forming an electrode; and the electrode is used for generating a pressure wave in the balloon under a pulse voltage. According to the pressure wave balloon catheter provided by the application, the cross-sectional size of the balloon catheter can be reduced, and the passing property of the balloon in the blood vessel tissue can be effectively improved.

The invention discloses an electromagnetic interference high-voltage pulse circuit, a control method, electronic equipment and a storage medium. The electromagnetic interference high-voltage pulse circuit comprises a first self-oscillation circuit, a first pulse width modulation circuit, a first follower circuit, a transformer control and output circuit, a second self-oscillation circuit, a second pulse width modulation circuit, a second follower circuit and a relay control circuit; the transformer control and output circuit uses a first follower circuit to output a signal to control the input of a transformer primary coil so as to control the output of a transformer secondary coil; and the relay control circuit uses the second follower circuit to output a signal to control the actuation of a relay so as to realize the output control of the final signal pulse train. According to the electromagnetic interference high-voltage pulse circuit, the control method, the electronic equipment and the storage medium provided by the invention, the circuit structure is simple, the size is small, the cost can be reduced, the controllability is high, and output modulation is facilitated.

The invention discloses a pulse circuit, and relates to the technical field of electronics, the pulse circuit comprises a boost circuit, the boost circuit comprises a boost control circuit, a first diode and a first capacitor, the first end of the boost control circuit is connected with one end of the first capacitor, and the other end of the first capacitor is connected with the negative electrode of the first diode; the anode of the first diode is connected with a first power supply; a first end of the signal amplification circuit is connected with a negative electrode of the first diode and the other end of the first capacitor; the second end of the signal amplification circuit is connected with and controls the on-off of the pull-up switch, the first end of the pull-up switch is connected with a second power supply, the first end of the pull-down switch is grounded, and the second end of the pull-up switch is connected with the second end of the pull-down switch so as to cooperate to output pulse signals; and the main control chip is respectively connected with and controls the boost control circuit, the signal amplification circuit and the pull-down switch. The diode and the capacitor are used for boosting, and the production and manufacturing cost is low.

The utility model discloses a high-frequency electronic descaling decomposition device which comprises a pipe body arranged on the outer side of a pipeline in a sleeving mode, the pipe body is composed of a first semicircular shell and a second semicircular shell, the first semicircular shell and the second semicircular shell comprise connecting ends and butt joint ends, the connecting ends are connected through detachable connecting pieces, and the butt joint ends are connected through detachable connecting pieces. The butt joint ends are connected through a lock catch assembly, the inner side of the first semicircular shell is provided with a first limiting protrusion and a first arc-shaped elastic gasket, the inner side of the second semicircular shell is provided with a second limiting protrusion and a second arc-shaped elastic gasket, and the interior of the pipe body is connected with a high-frequency pulse circuit board. Most of the existing electronic descaling devices are fixed and are in direct contact with a pipeline, so that the pipeline is easily abraded or damaged after long-term use, the pipe body of the electronic descaling device is detachably connected, the electronic descaling device is convenient to disassemble and maintain, an elastic gasket and a limiting bulge are used for preventing the device from being in direct contact with the pipeline, the protection on the pipeline is enhanced, and the adaptability is strong.

This invention provides an intermittent high-voltage pulse control method, a pulse circuit, and an acoustic pressure therapy device. The control method includes: obtaining a charging cycle based on an operating frequency of the piezoelectric ceramic plate, where the charging cycle is longer than operating time Et of the pulse signal in the pulse generation circuit; issuing a charging command at the beginning of each charging cycle to trigger the pulse generation circuit to enter a charging state, and after charging is completed, performing discharging to release a stored energy voltage to the piezoelectric ceramic plate to complete output of the pulse signal within the current charging cycle; and after outputting the pulse signal within the current charging cycle, issuing a sleep command to stop the operation of the pulse generation circuit until a next charging cycle begins, and then issuing the charging command again to trigger the pulse generation circuit.

The invention relates to the technical field of image intensifiers, and particularly discloses an audio noise suppression device and method for an automatic gating type image intensifier, and the device comprises a voltage stabilization power supply circuit module, a microprocessor, a low-voltage pulse circuit module, a gating gate circuit module, and a cathode output circuit module. The input end of the voltage-stabilizing power supply circuit module is connected with a 2-4VDC power supply, and the output end of the voltage-stabilizing power supply circuit module outputs 3.3 VDC power supply voltage and is connected with a power supply input pin and a grounding pin of the microprocessor; a PWM output pin of the microprocessor is connected with an input signal end of the low-voltage pulse circuit module; the signal output end of the low-voltage pulse circuit module is connected with the control input end of the gating gate circuit module; the high-voltage power supply input end of the gating gate circuit module is connected with high-voltage alternating current, and the high-voltage pulse signal output end of the gating gate circuit module is connected with the input end of the cathode output circuit module; and the output end of the cathode output circuit module is connected with the photoelectric cathode of the image intensifier single tube.

The invention relates to the technical field of electronics, and discloses a pulse circuit, a PCB and a chip, and the pulse circuit comprises an input unit, a reverse unit, a filtering unit, a hysteresis unit, a driving enhancement unit, a logic control unit and an output unit. The input unit is electrically connected with the reverse unit and the filtering unit; the reverse unit is electrically connected with the filtering unit and the logic control unit; the filtering unit is electrically connected with the delaying unit, the delaying unit is electrically connected with the driving enhancement unit, the driving enhancement unit is electrically connected with the logic control unit, and the logic control unit is electrically connected with the output unit; according to the improved anti-interference circuit provided by the invention, the hysteresis unit and the driving enhancement unit are introduced, so that the stable hysteresis characteristic and strength of the pulse signal are improved, the pulse circuit can provide more stable and more accurate signal processing capability in a noise environment, and the overall performance and reliability of the circuit are remarkably improved; the problem that the performance of an existing pulse circuit is reduced in a high-noise environment is solved.

The utility model discloses a pulse circuit, which relates to the technical field of electronics, and comprises a boost circuit, the boost circuit comprises a boost control circuit, a first diode and a first capacitor, the first end of the boost control circuit is connected with one end of the first capacitor, and the other end of the first capacitor is connected with the cathode of the first diode; the anode of the first diode is connected with a first power supply; a first end of the signal amplification circuit is connected with a negative electrode of the first diode and the other end of the first capacitor; the second end of the signal amplification circuit is connected with and controls the on-off of the pull-up switch, the first end of the pull-up switch is connected with a second power supply, the first end of the pull-down switch is grounded, and the second end of the pull-up switch is connected with the second end of the pull-down switch so as to cooperate to output pulse signals; and the main control chip is respectively connected with and controls the boost control circuit, the signal amplification circuit and the pull-down switch. The diode and the capacitor are used for boosting, and the production and manufacturing cost is low.

The invention relates to the technical field of high-voltage pulses, and discloses a modular high-reliability high-voltage pulse circuit, which comprises a direct-current power supply used for providing direct-current input electric energy for the whole high-voltage pulse circuit; the boosting unit is used for converting the direct-current input electric energy into high-voltage pulse energy through a pulse modulation technology; the fault bypass protection unit is used for automatically bypassing the fault part when the high-voltage pulse circuit breaks down, so that the high-voltage pulse circuit operates normally; the load is used for receiving and utilizing the high-voltage pulse energy output by the high-voltage pulse circuit; and the central digital control module is used for communicating with an upper computer and monitoring and controlling the boosting unit so as to realize output of different high-voltage pulse sequences. The operation reliability of the system is greatly enhanced.

The invention discloses a non-power-failure non-electric-connection simple fault testing device for an electromagnetic current transformer. The non-power-failure non-electric-connection simple fault testing device comprises a first clamp meter, a second clamp meter, a first testing module, a second testing module, a first control switch group and a second control switch group, the first clamp meter and the second clamp meter are used for connecting a secondary circuit of the transformer substation; the first control switch group is used for connecting the first clamp meter and the first test module; the second clamp meter is used for connecting a second test module; the conventional detection circuit is used for performing conventional current detection on the secondary circuit of the transformer substation; the high-frequency detection circuit is used for detecting a specific signal of a secondary circuit of the transformer substation; and the high-frequency pulse circuit is used for sending a high-frequency pulse signal with a specific frequency to the secondary circuit of the transformer substation. According to the invention, the secondary circuit can be disconnected without power failure during detection, the risks of open circuit and wiring loosening caused by multiple disconnection are avoided, the safety of the test process is guaranteed, and normal power supply of the transformer substation is not affected.

A Particle Tracking Velocimetry (PTV) system and method encodes particle tracks with a known monotonic intensity variation to provide high-resolution particle velocity and directionality information. One or more light-emitting diodes (LEDs) is utilized as the light source, and the intensity variation may result from a capacitance discharge rate in an LED pulsing circuit. A single-camera / single-LED system may be utilized to two-dimensional motion of particles, and a two-color system may be utilized to determine three-dimensional motion of particles toward or away from the camera.

The invention provides a grid bias voltage circuit for a transmission tube in a bidirectional level conversion circuit. The grid bias voltage circuit comprises a first phase inverter, a second phase inverter, a third P-type field effect transistor and a monostable pulse circuit, the first inverter is connected to the first power domain and the enable signal; the second inverter is connected to the second power domain and the enable signal; the source electrode of the third P-type field effect transistor is connected to the output nodes of the first inverter and the second inverter, the grid electrode is connected to the first power domain, and the drain electrode is grounded; the monostable pulse circuit is connected to the enable signal and the second power domain; wherein the output node provides grid bias voltage and is used for controlling an N-type field effect transistor transmission tube in the bidirectional level conversion circuit. The three parallel current branches are designed to charge the grid bias voltage at the same time, and the stable grid bias voltage can be quickly established within an extremely short time after the chip is powered on and enabled, so that the bidirectional level conversion circuit is supported to carry out high-speed signal transmission.

The utility model discloses a Miller clamp double-pulse test circuit and device. The Miller clamp double-pulse test circuit comprises a pulse circuit, an optocoupler circuit, a triode Q2, a load resistor R7 and a switch element Q1. The pulse circuit is connected with an input end S1 of the optical coupling circuit, an output end S2 of the optical coupling circuit is connected with a first end of the switch element Q1, a second end of the switch element Q1 is connected with a power supply voltage VCC, and a third end of the switch element Q1 is connected with one end of the load resistor R7; the emitter electrode of the triode Q2 is connected with the first end of the switch element Q1, the collector electrode of the triode Q2 is connected with the other end of the load resistor R7, one end of the load resistor R7 is grounded, and when the voltage of the first end of the switch element Q1 is larger than a preset threshold value, the triode Q2 is conducted so as to reduce the voltage of the first end of the switch element Q1 to the ground potential. According to the invention, the switch element Q1 can be protected from being damaged by overvoltage, so that the safety of the test circuit can be improved, and the test cost is reduced.

The embodiment of the utility model discloses a three-axis motion controller circuit, which belongs to the technical field of motion controllers, and is characterized in that the input end of a central processing unit module is electrically connected with the output end of a data storage circuit, and the output end of the central processing unit module is electrically connected with the input end of a differential pulse circuit; the output end of the input isolation circuit is electrically connected with the input end of the central processing unit module, the input end of the power output circuit is electrically connected with the output end of the differential pulse circuit, and the output end of the power conversion circuit is electrically connected with the input end of the central processing unit module and the input end of the communication circuit. The output end of the communication circuit is electrically connected with the input end of the central processing unit module, and the input end of the data storage circuit is electrically connected with the input end of the USB interface circuit. According to the embodiment of the invention, complex track movement in a file can be completed, the efficiency is improved through real-time response, the complexity is reduced, and the stability is improved.

The invention provides a broadband phased array ground penetrating radar transmitter and a control method thereof, and relates to the technical field of phased array radar detection, and the broadband phased array ground penetrating radar transmitter comprises a control module, a TDC-based time difference measurement unit, a programmable microstrip line-based pulse shaping unit, a DDS module, a driving module and a Marx pulse circuit. The control module is used for parameter analysis and signal acquisition, reading waveform and delay parameters stored in the waveform memory, and issuing the waveform and delay parameters to the DDS module to generate trigger signals of each channel; the time difference measuring unit based on the TDC measures the inherent trigger time difference between the channels, and feeds back the inherent trigger time difference to the control module for parameter correction; the driving module receives the trigger signal and triggers and excites the Marx pulse circuit to generate a Gaussian pulse with extremely low time jitter; the pulse shaping unit based on the programmable microstrip line is used for shaping Gaussian pulses into monocyclic pulses, high time precision control and high peak power output of a transmitter are achieved, and the high-resolution phased array ground penetrating radar transmitter is suitable for a high-resolution phased array ground penetrating radar system.