30results about "Single pulse train generator" patented technology

Thermionic generators are described herein that include a variety of features that allow the devices to efficiently and effectively convert large amounts of thermal energy directly to electrical energy, such as in the form of currents and / or voltages. For example, the thermionic generators can be used to generate an electron beam from a thermionic emission device, and focus or shape the electron beam in such a way that allows the energy of electrons in the electron beam to be captured and converted to electrical energy.

A high-speed four-phase 25% duty cycle clock generator is provided. The four-phase clock generator includes a four-stage ring structure including four transistors of a first conductivity type, each transistor configured as a common-source structure and interconnected in a ring topology to sequentially and cyclically reset phases of an output clock; a first alternating phase cross-coupled pair including two transistors of the first conductivity type to cross-couple a first and third phase of the output clock; a second alternating phase cross-coupled pair including two transistors of the first conductivity type to cross-couple a second and fourth phase of the output clock; and a set network including four transistors of a second conductivity type to sequentially and cyclically set the phases of the output clock in response to four gated clock signals generated by alternately gating phases of an input clock and the phases of the output clock.

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.

A system configured to provide a non-thermal plasma from a variety of feed gases is described. The system includes a plasma applicator; a feed gas source providing a gas flow to the plasma applicator; a power supply configured to deliver electrical power via a transmission line to an electrode of the plasma applicator; a signal generator configured to provide a drive signal to the power supply; and a controller. The controller is configured to receive at least one input status parameter associated with a quality of plasma delivered by the plasma applicator; and provide at least one parameter value for at least one parameter defining an output signal waveform of the power supply. The at least one parameter value is taken from the group consisting of: duty factor, pulse rate, pulse width, pulse delay, pulse modulation and pulse shape.

The present application relates to a kind of multi-mode noise interference signal generation method, belong to signal interference technical field, solve the problem that existing cannot dynamically flexibly generate the interference signal of multiple modulation modes and the high development complexity.For method includes: according to noise kind and interference mode, obtain first noise sequence, second noise sequence, third noise sequence, noise interference bandwidth and center frequency;Carrier signal is generated based on center frequency;First noise sequence and noise interference bandwidth are passed into first multiplier, then the output result and carrier signal are passed into adder, and first complex signal is output by direct digital synthesizer;First complex signal and second noise sequence are passed into complex multiplier, and second complex signal is output;Second complex signal and third noise sequence are passed into second multiplier, and noise interference signal is output.The generation of multi-mode noise interference signal dynamically flexibly is realized.

The utility model discloses a signal generator supporting multi-waveform output. The signal generator comprises a hysteresis comparator circuit, an anti-phase integrator circuit and a sine wave generator circuit. Wherein the output end of the hysteresis comparator circuit is connected to the input end of the anti-phase integrator circuit, and the output end of the anti-phase integrator circuit is connected to the input end of the sine wave generator circuit; wherein a square wave output end XS1 is led out from the output end of the hysteresis comparator circuit; a triangular wave output end XS2 is led out from the output end of the anti-phase integrator circuit; and a sine wave output end XS3 is led out from the output end of the sine wave generator circuit. The utility model has the advantages that the multi-waveform signal output is supported, the cost is low, the structure is simple, and the realization is convenient.

Embodiments include methods performed by an apparatus configured to generate output signals for transmission. Such methods include detecting a triggering condition related to a change in operational status of the apparatus and selecting one of a plurality of pre-shaping vectors based on the triggering condition and past operating conditions of the apparatus during a plurality of most recent time intervals. Each pre-shaping vector includes a plurality of values that compensate for effects of voltage variation of a power supply for the apparatus. Such methods include, during a plurality of time intervals after the triggering condition, applying the values of the selected pre-shaping vector to respective information-carrying signals, thereby generating pre-shaped information-carrying signals. Such methods include generating output signals for transmission during the plurality of subsequent time intervals, using the pre-shaped information-carrying signals. The output signals are generated by an active circuit powered by the power supply.

An apparatus (20) and method for synchronizing a triggered system (System B) to a triggering system (System A) by tracking the timing of rising and falling edges of a clock signal (CLK_IN) at the triggered system and using the tracked timing values (within logger 27 from counter 22) for phase shift adjustment (25: SET) of a time base (CLK_IN at 28 out) at the triggered systems.

To provide surface charge and power feedback as well as control using a switch mode bias system.SOLUTION: There are provided systems, methods and apparatus for regulating ion energies in a plasma chamber and avoiding excessive and damaging charge buildup on the substrate surface and within capacitive structures being built on the surface. An exemplary method includes placing a substrate in the plasma chamber, forming a plasma in the plasma chamber, controllably switching power to the substrate so as to apply a periodic voltage function (or a modified periodic voltage function) to the substrate, and modulating, over multiple cycles of the periodic voltage function, the periodic voltage function responsive to a defined distribution of energies of ions at the surface of the substrate so as to effectuate the defined distribution of ion energies on a time-averaged basis, and to maintain surface charge buildup below a threshold.SELECTED DRAWING: Figure 52

A device includes a transmission clock circuit that includes a phase interpolator circuit and a transmission differential to quadrature phase generator. The phase interpolator circuit interpolates phases and provides phase interpolated first clock signals and phase interpolated second clock signals. The transmission differential to quadrature phase generator, duty cycle corrects each of the phase interpolated first clock signals and the phase interpolated second clock signals, quadrature error corrects each of the duty cycle corrected phase interpolated first clock signals and the duty cycle corrected phase interpolated second clock signals, outputs transmission clock signals based on the quadrature error corrected duty cycle corrected phase interpolated first clock signals, and outputs multiple clock phases and a track signal based on the quadrature error corrected duty cycle corrected phase interpolated second clock signals.

The invention discloses a frequency signal simulation device which comprises an interface module, a frequency signal generation module and an output module. The interface module is used for receiving frequency parameters, the frequency parameters comprise frequency types and frequency values, and the frequency types comprise square wave signals and NPN / PNP type proximity switch signals. And the frequency signal generation module is connected with the interface module and is used for generating a square wave signal corresponding to the frequency value and converting the square wave signal into an NPN / PNP type proximity switch signal according to the frequency type. And the output module is connected with the frequency signal generation module and is used for outputting the square wave signal and the NPN / PNP type proximity switch signal to corresponding external equipment. The device can solve the problems that in the prior art, a frequency signal is single in function, and the requirements for multifunctional signal simulation and simulation accuracy in a complex test environment cannot be met.

An apparatus includes a transmit clock circuit including a phase interpolation circuit and a transmit differential to quadrature phase generator. The phase interpolation circuit interpolates a phase and provides a phase interpolated first clock signal and a phase interpolated second clock signal. The transmission differential to quadrature phase generator performs duty cycle correction on each phase interpolated first clock signal and each phase interpolated second clock signal, performs quadrature error correction on each duty cycle corrected phase interpolated first clock signal and each duty cycle corrected phase interpolated second clock signal, and performs quadrature error correction on each duty cycle corrected phase interpolated first clock signal and each duty cycle corrected phase interpolated second clock signal. A transmission clock signal is output based on a quadrature error corrected duty cycle corrected phase interpolated first clock signal, and a plurality of clock phases and a tracking signal are output based on a quadrature error corrected duty cycle corrected phase interpolated second clock signal.

The utility model relates to an edge-triggered monopulse circuit, system and device. The circuit comprises a first resistor, a second resistor, a third resistor, a capacitor, a diode, a first MOS tube and a second MOS tube. One end of the first resistor is connected to a control signal input end, the other end of the first resistor is connected with a grid electrode of the first MOS tube, a drain electrode of the first MOS tube is connected with one end of the second resistor and one end of the third resistor, and the other end of the second resistor is connected to a first continuous power supply end; the other end of the third resistor is connected with one end of a capacitor, the other end of the capacitor is connected with the positive electrode of a diode, the negative electrode of the diode is connected with the grid electrode of a second MOS tube, and the drain electrode of the second MOS tube is connected to the low-pulse output end; source electrodes of the first MOS tube and the second MOS tube are grounded; the circuit is simple in design, low in development and manufacturing cost, capable of achieving effective signal control while meeting the function of generating low pulses, and beneficial to application and popularization.

A system includes a first PSU, a second PSU coupled in series with the first PSU, and a pulse switch circuit The pulse switch circuit includes a voltage input coupled with the first PSU and with the second PSU, a voltage output, a first switch assembly coupled in series between the first PSU and the voltage output, a second switch assembly coupled in series between the 5 second PSU and the voltage output, and a clamp circuit coupled to the voltage output. A controller controls the first switch assembly, the second switch assembly, and the clamp circuit based on an input received from a load sensor coupled to a load.

A plasma driver for efficiently delivering energy to a plasma when driving arcs or arc-like plasmas through a spark gap is disclosed. A plasma driver may include an energy storage capacitor, a nanosecond pulser stage electrically coupled with the energy storage capacitor, an IPM stage electrically coupled with the nanosecond pulser stage and the energy storage capacitor, a transformer electrically having a primary side and a secondary side, the primary side electrically coupled with the nanosecond pulser stage and the IPM stage, and a device may include an output cable electrically coupled with a secondary side of the transformer.

The utility model relates to the technical field of molecular pumps, and discloses a molecular pump identification circuit and a molecular pump, the molecular pump identification circuit is connected with a control module, the molecular pump identification circuit comprises a pulse output device and an energy storage device, the pulse output device is respectively connected with a preset reference voltage, the control module and the energy storage device; the pulse output device is used for sending the electric energy of the preset reference voltage to the energy storage device for storage and discharging the electric energy of the energy storage device; the energy storage device is used for charging and discharging and sending an energy storage voltage signal to the pulse output device; and the pulse output device is further used for receiving the energy storage voltage signal, comparing the energy storage voltage signal with a preset voltage signal, and outputting pulse signals with different frequencies according to a comparison result, so that the control module identifies the model of the molecular pump according to the frequencies. The problem that limited recognition types exist when a divider resistor is used for recognizing the magnetic suspension molecular pump is solved.

The invention discloses an electric pulse massage device, and relates to the technical field of massage equipment. The device comprises a massage controller and at least one massage electrode circuit, and an electric pulse output patch is arranged on the massage electrode circuit; the massage controller is used for acquiring health state information of the target object and sound waveform information of the target object, and inputting the health state information and the sound waveform information into a pre-trained deep learning model to obtain massage mode information output by the deep learning model, the massage mode information comprises an electric pulse waveform signal and electric pulse output time corresponding to each massage electrode circuit; the massage controller is further used for determining an electric pulse waveform signal and electric pulse output time corresponding to the massage electrode circuit based on the massage mode information and controlling the massage electrode circuit to output the electric pulse waveform signal through the electric pulse output patch within the electric pulse output time. According to the electric pulse massage device, the intelligent level of massage equipment can be remarkably improved.

The invention provides a linear commutation pulse circuit and a linear commutation control method, and relates to the technical field of circuit control. The linear commutation pulse circuit comprises a power supply input module, a voltage reduction module, a switch module, a linear power module, a detection module and a control module, the detection module comprises a current detection unit and a voltage detection unit, and the current detection unit is arranged on the low side of the linear power module and is used for single-point bidirectional detection of the current on the load side; the voltage detection unit is connected in parallel with the load and is used for detecting the voltage of the load side; the control module is configured to send a polarity control signal to the switch module so as to control the output path of the switch module. Through the low-side single-point bidirectional current detection design, the circuit layout is simplified, the minimum working voltage difference of the linear power tube is dynamically optimized, and the working efficiency of the linear commutation pulse circuit is improved while the output stability is ensured.

The utility model discloses an atomization plate hardware circuit composed of a 555 timer, which relates to the technical field of atomization plate circuit research and comprises a power interface circuit, a power filter circuit, the 555 timer, a peripheral circuit and a post-stage circuit. The power supply interface circuit is connected with the input end of the power supply filter circuit through a connector, the output end of the power supply filter circuit is connected with a pin 8 and a pin 4 of the 555 timer, and the 555 timer is connected with the peripheral circuit and the G end of an NMOS (N-channel metal oxide semiconductor) tube in the post-stage circuit; stable voltage is generated through the power supply filter circuit, stable square waves are generated through the 555 timer, the three-pin inductor is used for boosting and then makes contact with the probe through the contact, the probe is connected to the atomization piece, and therefore mist is successfully output, and stable mist can be generated; and the whole circuit for controlling mist discharge adopts the smallest and fewest circuit elements, so that stable mist discharge in an ultra-small space can be completed.

Bias supplies and bias control methods are disclosed. One method comprises applying, during an ON pulse, a waveform using switching in connection with a DC voltage, removing the DC voltage while circulating current during an OFF pulse, reapplying he DC voltage, in advance of another ON pulse, and initiating the switching after reapplying the DC voltage to reapply the waveform during another ON pulse.

The invention discloses an electromagnetic ultrasonic thickness measuring method based on low-voltage excitation, which belongs to the technical field of nondestructive testing, and comprises the following steps: selecting a sub-pulse signal; generating a random sequence and an output sequence based on a Golay code; dynamically selecting a first sub-pulse which does not contain zero level or a second sub-pulse which contains zero level according to values of adjacent bits in the random sequence, and synthesizing a pulse signal; multiplying the pulse signal by a random signal to obtain an output signal, and exciting an electromagnetic ultrasonic transducer after power amplification; and a receiving end multiplies the collected original signal by the inverse code of the pulse signal to obtain an actual receiving signal, and finally performs related processing on the actual receiving signal and the long pulse string signal to obtain a thickness measurement result. The receiving interval is dynamically inserted into the excitation signal, so that echo aliasing in detection of the thin-wall test piece is effectively avoided, and meanwhile, the requirement on excitation voltage is remarkably reduced on the premise of ensuring the signal-to-noise ratio.

The utility model provides a battery-driven separately-excited frequency sweep circuit and an ultrasonic cleaning device, which are suitable for the field of high-precision cleaning of glasses, jewelry and the like. The device is powered by a battery, and the problem that traditional ultrasonic cleaning equipment depends on an external power source and is inconvenient to use is solved. The separate excitation type frequency sweep circuit generates a fixed frequency signal through the single-chip microcomputer control module and automatically adjusts the output frequency range according to load changes, and it is ensured that the ultrasonic generator keeps stable power output under different load conditions. The device comprises a transparent cup cover, a stainless steel cup, a silica gel ring, a cleaning tank, a main PCB, a battery pack and other assemblies, and all the assemblies are mechanically and electrically connected to achieve function integration. By optimizing the circuit design and adopting the high-efficiency industrial-grade ultrasonic generator, the low-energy-consumption and high-efficiency cleaning effect is realized, and the portability and the practicability of the equipment are remarkably improved.

The invention discloses an EPR pulse wave generation system based on pre-distortion processing, and relates to the technical field of magnetic resonance. The pulse generation module is used for generating a frequency modulation pulse wave signal according to the fundamental wave signal and the frequency mixing signal; the pulse application module is used for acting the frequency modulation pulse wave signal on a to-be-detected sample to generate a to-be-detected signal; the time sequence calculation module is used for calculating distortion information of each frequency component of the frequency-modulated pulse wave signal in the pulse application module; determining a compensation time sequence of each frequency component in the frequency-modulated pulse wave signal based on the distortion information; and the pre-distortion processing module is used for adjusting the sending time sequence of each frequency component in the frequency mixing signal based on the determined compensation time sequence, and updating the frequency modulation pulse wave signal according to the adjusted frequency mixing signal so as to adjust the time domain fidelity of the frequency modulation pulse wave.

A bipolar high voltage bipolar pulsing power supply is disclosed that can produce high voltage bipolar pulses with a positive high voltage pulse greater than about 2 kV followed by a negative high voltage pulse less than about −2 kV with a positive to negative dwell period between the positive high voltage pulse and the negative high voltage pulse. A high voltage bipolar pulsing power supply, for example, can reproduce high voltage pulses with a pulse repetition rate greater than about 10 kHz.

This disclosure describes systems, methods, and apparatuses for an RF switch comprising one or more cells coupled in series between RF terminals. Each cell having a bridge of PIN diodes or three-terminal switches controlled by complementary drivers through a coupled inductor. A bypass inductor can be arranged across each bridge. The RF switch may include compensation capacitors to better achieve equal distribution of voltage over the switches when the RF switch is in the off state.

The present disclosure provides an integrated circuit, which includes an input stage, a first output stage, and a second output stage. The input stage receives and converts an input clock signal into a first signal and a second signal. The first output stage includes a first inverter and a first buffer circuit. The first inverter and the first buffer circuit receive the second signal and the first signal, respectively, and generate a first output clock signal at a first output terminal of the integrated circuit. The second output stage includes a second inverter and a second buffer circuit. The second inverter and the second buffer circuit receive the first signal and the second signal, respectively, and generate a second output clock signal at a second output terminal of the integrated circuit. The first output clock signal and the second output clock signal are differential clock 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.

The invention discloses a pulse emission circuit, a control method and a related product. The pulse transmitting circuit comprises a controller, a threshold voltage circuit, a comparator circuit, a biasing circuit and a pulse circuit; a plurality of input ends of the threshold voltage circuit are respectively connected with different voltage levels, an output end of the threshold voltage circuit is connected with a first input end of the comparator circuit, and a control end of the threshold voltage circuit is connected with the controller; the second input end of the comparator circuit is connected with the low-voltage domain output end of the pulse circuit, and the output end of the comparator circuit is connected with the input end of the biasing circuit; the output end of the biasing circuit is connected with the input end of the pulse circuit; and a controller configured to control the threshold voltage to change at least one of a frequency, an amplitude, and a number of steps of the pulse output by the pulse circuit. According to the pulse transmitting circuit in the embodiment of the invention, the frequency, the amplitude and the step number of the output pulse are controllable, and the ultrasonic imaging requirements of the PMUT for different penetration depths are met.