354 results about "Pulse generator" patented technology

The invention relates to the field of electrical safety monitoring, in particular to an explosion-proof grounding resistance online monitoring system. The device comprises an explosion-proof housing, a pulse generator, a sensor, a microprocessor and a communication module. The explosion-proof housing is provided with a closed ground wire through hole. The pulse generator, the sensor and the microprocessor are all arranged in the explosion-proof shell, and the microprocessor is in communication connection with the pulse generator and the sensor; the communication module is in communication connection with the microprocessor; the microprocessor circularly monitors and calculates a grounding resistance value and a metal connection resistance value according to time set by a user, and actively uploads the values to a background monitoring center through the communication module. According to the invention, automatic and real-time resistance on-line measurement can be realized in an explosion-proof environment, an alarm can be given when a resistance value exceeds a threshold value, and a fault can be effectively identified.

An integrated circuit device includes: one or more switches of a Buck converter; and a control circuit for the Buck converter including: a comparator configured to generate a comparator output signal by comparing a feedback voltage of the Buck converter with a compensation ramp voltage; a pulse generator configured to generate, in response to a rising edge in the comparator output signal, a pulse signal for controlling the Buck converter; a transconductance amplifier configured to generate, at an output terminal of the transconductance amplifier, a current proportional to a difference between a reference voltage and the feedback voltage; a capacitor coupled between the output terminal of the transconductance amplifier and a reference voltage node; and a ramp signal generator configured to generate the compensation ramp voltage by adding a voltage at the output terminal of the transconductance amplifier and a ramp voltage generated by the ramp signal generator.

A layered pulse generator for a vertical-cavity surface-emitting laser (“VCSEL”) driver is disclosed consisting of three elements: a low-speed pulse generator, a high-speed pulse generator, and a pulse generator selector, all of which are on-chip with the VCSEL driver. By providing these elements on-chip, overall system power and complexity are reduced while allowing for significantly higher pulse train frequencies compared with known systems. The high-speed pulse generator is capable of generating pulses faster and with higher resolution than that of the low-speed pulse generator. The high-speed pulse generator uses multiple clock outputs, phase shifted, and synthesized into a single pulse waveform capable of wide-ranging frequencies, duty cycles and pulse counts.

The integrated circuit includes a delay monitor that monitors a delay of the data signal from the digital circuitry by generating a pulse having a width determined by the delay. In some embodiments, a delay monitor is implemented as a digital circuit that includes a pulse generator and an event generator. The delay monitor receives a data signal and a clock signal for clocking the data signal. The pulse generator generates a pulse according to the received data signal and the clock signal, wherein a width of the pulse is determined by a delay of the data signal relative to the clock signal. The event generator generates events that are temporally distributed with respect to the clock signal. As a result, the delay may be estimated based on an overlap between the event and the pulse.

Systems and methods of wirelessly powered stimulators and implantable pulse generators that can generate stimulations with programmable amplitudes and RF spectrum control in the RF domain are described. An embodiment includes an implantable pulse generator that includes: an Rx antenna configured to receive a radio frequency (RF) signal: a demodulator coupled to the Rx antenna, the rectifier, and a source, and configured to control an output of a train of mini-pulses, based on the RF signal, each mini-pulse having a voltage amplitude and a pulse width (on-portion) smaller than a pulse width TO; and stimulation circuitry 250 coupled to receive the train of minipulses and deliver the train of mini-pulse to an electrode, where the train of mini-pulses to the electrode effectively corresponds to a stimulation pulse, having a pulse width TO and an amplitude that is a function of the pulse widths of the mini-pulses.

A pulse generator includes charging circuitry configured to provide electrical power to the pulse generator. The pulse generator includes communication circuitry configured to conduct wireless telecommunications with external programming devices. The telecommunications contain programming instructions sent from the external programming devices. The pulse generator includes stimulation circuitry configured to generate electrical pulses based on the programming instructions. The electrical pulses include a first component that is paresthesia-inducing and a second component that is non-paresthesia-inducing.

Pulse-generator-based reciprocal quantum logic (RQL) bias-level sensors are fabricated on an RQL integrated circuit (IC) to sample AC or DC bias values provided to operational RQL circuitry on the RQL IC. The bias-level sensors include pulse generators having strengthened or weakened bias taps (transformer couplings to RQL AC clock resonators or DC bias lines) as compared to bias taps of Josephson transmission lines in the operational RQL circuitry, or Josephson junctions (JJs) with larger or smaller critical currents as compared to JJs in the operational RQL circuitry. Pulse generators with weakened bias taps or larger JJs can have lower limits of their operational ranges placed near an optimal bias point at the centroid of the operating region of the operational RQL circuitry. The bias-level sensors can be staged by relative strength to indicate whether a provided bias value is an improvement when varied over a range.

Implanted pulse generators with reduced power consumption via signal strength-duration characteristics, and associated systems and methods are disclosed. A representative method for treating a patient in accordance with the disclosed technology includes receiving an input corresponding to an available voltage for an implanted medical device and identifying a signal delivery parameter value of an electrical signal based on a correlation between values of the signal delivery parameter and signal delivery amplitudes. The signal delivery parameter can include at least one of pulse width or duty cycle. The method can further include delivering an electrical therapy signal to the patient at the identified signal delivery parameter value using a voltage within a margin of the available voltage.

Technologies for closed-loop calibration of pulses to control spin qubits are disclosed. In an illustrative embodiment, calibration circuitry generates a pulse from a pulse generator. The pulse passes through a variable filter controlled by a filter parameter. The pulse is provided to a qubit, and the qubit is measured. Depending on the measured state of the qubit, the filter parameter can be changed. In this manner, the control pulses can be quickly and continuously calibrated. The calibration approach above offers several advantages. It can be implemented by circuitry close to the physical qubit, reducing opportunities for noise, cross-talk, etc. The calibration approach is scalable, as the calibration can be done quickly and continuously on a given qubit, and the same calibration circuitry can be multiplexed to interface with several qubits. The calibration circuitry can be on an integrated circuit, which can be in a cryogenic stage of the quantum computer.

An isolated DC-DC converter has a transformer with primary, secondary and auxiliary windings, and a secondary-sensing regulation architecture. A primary-side controller has a PWM generator, a wake-up pulse detector, a supply voltage generator and control circuitry. A secondary-side controller has an error amplifier, a switching detector, a wake-up pulse generator, a supply voltage generator and control circuitry. The primary-side controller and the secondary-side controller produce respective supply voltages in such a way that, when the DC-DC converter enters an idle state, the controllers enter respective sleep states wherein the PWM generator and the error amplifier are not supplied, while retaining the ability of producing and detecting a wake-up pulse when necessary.

A class D amplifier including a pulse width modulation (PWM) control loop, an H-bridge driver, a PWM controller having a PWM pulse generator to generate PWM pulses supplied to the H-bridge driver in response to an ADC value output by an analog-to-digital converter of the PWM control loop, and a comparator. The comparator is configured to trigger a cutoff of a PWM pulse generated by the PWM pulse generator during a respective loop cycle of the PWM control loop and to trigger generation of at least one counter PWM pulse with an opposite polarity in the respective loop cycle such that a net pulse energy of the cutoff PWM pulse and of the at least one generated counter PWM pulse corresponds to a pulse energy representing the ADC value provided by the analog-to-digital converter of the PWM control loop during the respective loop cycle.

According to one embodiment, semiconductor integrated circuit includes: first and second pulse generators that generate first and second pulse signals based on a first signal, and third and fourth pulse signal based on a second signal, respectively; first and second inversion buffers that output a third signal based on inputs of the first and third pulse signals, and a fourth signal based on inputs of the second and fourth pulse signal, respectively; wherein, when a logic level of the first or the third pulse signal changes from a first logic level to a second logic level, the first inversion buffer changes a logic level of the third signal, and when a logic level of the second or the fourth pulse signal changes from the first logic level to the second logic level, the second inversion buffer changes a logic level of the fourth signal.

The embodiment of the invention relates to the field of state diagnosis of a power system, and provides a grounding device defect diagnosis method based on multi-mode pulse cooperative modulation and a related device, and the method comprises the steps: generating and obtaining a four-dimensional adjustable pulse current sequence based on a pulse generator; injecting the four-dimensional adjustable pulse current sequence into a to-be-diagnosed grounding device, and collecting to-be-diagnosed voltage data and to-be-diagnosed current data of an injection point; according to the to-be-diagnosed voltage data and the to-be-diagnosed current data, performing time-frequency domain fusion analysis and calculating to obtain target defect feature data; and according to the target defect feature data, determining a defect level and outputting a maintenance decision, so that the accuracy of a defect diagnosis process aiming at the grounding state can be improved.

The application discloses a high-duty-cycle control system of a step-down DC-DC switching power supply, which is additionally provided with a high-duty-cycle control system on the basis of a basic structure of the switching power supply and comprises an LDO, a diode D2 for charging a capacitor C1 by the LDO, an error amplifier, a current comparator, an OR gate, a pulse generator, an RS latch and an under-voltage lockout circuit for detecting a voltage VBS between the capacitor C1. The under-voltage lockout circuit detects the voltage VBS between the capacitor C1, when the voltage is insufficient, temporarily turns off a charging switch tube M1, charges the capacitor C1 for providing a stable voltage power supply for a driving circuit during the turn-off of the M1, restores the power supply voltage of the driving circuit, and then reopens the M1, so as to realize the high-duty-cycle conduction of the NMOS type charging switch tube.

Systems and methods are described for controlling a low frequency (LF) radio frequency (RF) pulse generator to enhance selectivity. One method includes controlling the LF RF pulse generator to generate a plurality of rectangular pulses interspersed with a plurality of rectangular sub-pulses, each of the plurality of rectangular pulses having a first sub-pulse width greater than a second sub-pulse width of each of the plurality of rectangular sub-pulses.

Examples of the disclosure include an implantable system comprising principal stimulation circuitry configured to provide electrical stimulation to a phrenic nerve via at least one phrenic nerve stimulation electrode, subordinate stimulation circuitry configured to provide electrical stimulation to an upper-airway nerve via at least one upper-airway-nerve stimulation electrode, at least one respiration sensor, and an implantable pulse generator (IPG) comprising the stimulation circuitries and at least one processor configured to cause the subordinate stimulation circuitry to deliver stimulation in an absence of delivery of the phrenic nerve stimulation, monitor a signal from the respiration sensor(s), identify a respiration reduction based on the signal during the stimulation delivery, and in response thereto, cause the stimulation circuitries to deliver the stimulations concurrently based in part on the respiration signal and control a timing of delivery of the upper- airway-nerve electrical stimulation relative to a timing of delivery of the phrenic nerve electrical stimulation.

The application discloses a whole-process simulation monitoring system and method of a hydroelectric monitoring device, and belongs to the technical field of power grids.The system comprises a physical monitoring system, wherein the physical monitoring system comprises a primary frequency modulation branch, a secondary frequency modulation branch and a power feedback branch; a pulse generator which controls an output pulse signal according to an input value; and a physical governor which is coupled with the hydroelectric monitoring device, and after the coupling is completed, the governor performs speed regulation action simulation according to the control pulse signal output by the pulse generator at different proportional gains of the control pulse signal.The application can accurately simulate the pulling effect of primary frequency modulation and secondary frequency modulation in the adjustment process, realize the decoupling of the primary frequency modulation and the secondary frequency modulation in the frequency adjustment process, and improve the simulation precision of the hydroelectric power system.

A digital-to-analogue converter (DAC) device includes an input terminal for receiving an input signal that includes m MSBs and n least significant bits LSBs. The device includes a coarse DAC that generates a first voltage from the m MSBs, utilizing resistors and switches coupled to a reference voltage. Coupled with a clock signal of a predetermined frequency, a pulse generator produces pulse signals, including a first pulse signal with a first average voltage and a second pulse signal with a second voltage approximately half of the first average voltage. A fine DAC generates a second voltage using then LSBs to select among the pulse signals. An output filter combines the first and second voltages to produce the final output signal. Integrated circuits containing DAC devices and packages containing the integrated circuits are also described.

The invention relates to a system for semiconductor technology, comprising at least one fluid channel (105) for a temperature control medium for controlling the temperature of at least one component, for example a mirror (25, M4) of a projection exposure system (1) for photolithography. The system comprises, along the fluid channel (105), at least two pressure fluctuation measuring devices (210) and a pressure surge generator (220), which are spaced apart from one another in series and are connected to a control apparatus (230), the fluid channel (105), between two adjacent pressure fluctuation measuring devices (210), at least partially comprising a wall made of elastic material (215). The control device (230) is designed to ascertain pressure fluctuations in the temperature control medium that move from the pressure fluctuation measuring devices (210) toward the pressure surge generator (220) from the signals from the pressure fluctuation measuring devices (210) and to control the pressure surge generator (220) appropriately in order to generate destructive interference for the purpose of reducing pressure fluctuations in the temperature control medium. (Figure 2)

The invention relates to the technical field of power supply circuits, and discloses a point-to-point high-voltage POC power supply circuit control method. According to the method, a power supply end and a power receiving end are included, the power supply end is connected with the power receiving end through a coaxial cable, and the power supply end is provided with a control logic device U1, a high-voltage power supply switch MOS1, a pulse detection switch MOS4, a graded pulse voltage detection resistor R1 and a power supply current and voltage detection resistor R2. The power receiving end is provided with an adjustable time interval pulse generation device U2, a pulse control circuit and a load resistor; a power supply link is established through a low-voltage pulse detection mechanism, a high-voltage power supply mode is switched after a power receiving end equipment type and power supply parameters are determined through negotiation, and overcurrent and overvoltage protection is realized at the same time. According to the application, the POC circuit power supply capability is increased, POC power supply protection is provided, the private protocol is added to negotiate and control the power supply power, and simple grading can be matched with various types of power equipment.

A method of implanting a nerve stimulation device in treating an overactive bladder condition includes providing an external programmer and providing an implantable tibial nerve stimulation device (ITNS device) including a pulse generator enclosing circuitry and a lead coupling an electrode assembly to the pulse generator. The external programmer wirelessly communicates with the circuitry of the pulse generator to program a stimulation therapy for the ITNS device.

A vibrationally enhanced fluorescence microscopy system includes a narrowband pulsed mid-infrared laser configured to excite selected chemical bond vibrations in a sample. A continuous-wave visible laser is coaligned with the mid-infrared laser and configured to induce fluorescence from at least one fluorescent reporter bound to the sample. An external pulse generator temporally synchronizes emission of the mid-infrared pulses with emission of the visible laser. A reflective objective is arranged to deliver the mid-infrared pulses to a focal plane within the sample. A water-immersion objective is coaxially aligned with the reflective objective and arranged to collect the fluorescence from the focal plane. A photon-counting detector is coupled to receive the collected fluorescence. Control electronics are configured to output a vibrational-contrast signal derived from counts produced by the photon-counting detector.

1. The name of the design product: agile waveform pulse generator. 2. The use of the design product: for verifying the function of the electronic sensitive device equipment when the agile waveform pulse signal is radiated and coupled to the electronic sensitive device equipment under high power microwave radiation, verifying whether the function of the electronic sensitive device equipment is disturbed or the system functional failure error occurs, thereby destroying the electronic devices in the system. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best indicates the design points: perspective view.

A relaxation oscillator includes first to the sixth transistor, a resistor, a capacitor, an inverter, a pulse generator, and first to the third switch. The resistor is coupled between the third source and the third gate of the third transistor. The capacitor is coupled between the fourth source and the fourth gate of the fourth transistor. The input terminal of the inverter is coupled to the sixth drain of the sixth transistor. The pulse generator generates a pulse signal. The first switch is coupled between the inverter and a first reference voltage. The second switch is coupled between the inverter and the fifth transistor. The third switch is coupled between the fourth transistor and a second reference voltage. The first to third switches are turned on or off according to the pulse signal.

A system for treating disordered breathing of a human being includes an implantable transvenous stimulation lead having at least one stimulation electrode and a sensor configured to detect activity level of the human being. The system includes an energy source, a pulse generator and circuitry, the circuitry operative to receive a signal indicative of the activity level of the human being from the sensor, wherein the circuitry is configured to cause the energy source and the pulse generator to deliver spaced apart stimulation signals to the at least one stimulation electrode while the activity level of the human being is sufficiently low to be indicative of sleep. Spaced apart stimulation pulses from the electrode are configured to extend a duration of a time of at least one breath being defined as the time from an onset of inhalation to the onset of inhalation of a successive breath.

A power converter 10 contains a separation computer (a first transformation unit 122 and a separator 124), a PLL circuit 142, a PLL circuit 162, a negative-sequence current amplitude command generator 168, a negative-sequence current command generator 169, and a signal generator (a current control unit 180 and a pulse generator 190). The separation computer calculates positive-sequence voltages (Vpα and Vpβ) and negative-sequence voltages (Vnα and Vnβ) from three-phase AC voltages of a power grid. The PLL circuit 142 calculates a positive-sequence phase (θp) from the positive-sequence voltages (Vpα and Vp(3)). The PLL circuit 162 calculates a negative-sequence phase (θn) and a negative-sequence voltage amplitude (Vn) from the negative-sequence voltages (Vnα and Vnβ). The negative-sequence current amplitude command generator 168 calculates a negative-sequence current amplitude command value (In) based on the negative-sequence voltage amplitude (Vn).The opposite-system current command generator 169 calculates opposite-system current command values ​​(Ina, Inb, and Inc) based on the opposite-system current amplitude command value (In) and the opposite-system phase (θn). The signal generator generates the control signal (PLS) based on a result obtained by adding (i) positive-system current command values ​​based on the positive-system phase (θp) and (ii) the opposite-system current command values ​​(Ina, Inb, and Inc).

The present disclosure relates to an inertial sensor for measuring an amount of inertia along a sensing axis. The sensor includes an atom interferometer including a pulse generator for generating one or more pulsed light beams defined by respective pulse durations to place atoms in superposition and recombine the atoms to measure interference of the atoms, the one or more pulsed light beams being configured to generate one or more pulsed light beams, the one or more pulsed light beams being defined by respective pulse durations, the one or more pulsed light beams being defined by respective pulse durations, and the one or more pulsed light beams being defined by respective pulse durations, the one or more pulsed light beams being defined by respective pulse durations. And calculating the amount of inertia based on the measured interference. The sensor further includes an auxiliary acceleration sensor configured to measure acceleration transverse to one or more of the pulsed light beams; and a control system configured to calculate a lateral offset of the atoms relative to the pulsed light beam caused by the measured acceleration transverse to the one or more of the light beams, increase the pulse duration, and adjusting the pulse timing to compensate for a reduced beam strength applied to the atoms due to the lateral offset.

An optical processor and a method for optically processing data are described herein. The optical processor may comprise an optical pulse generator, an optical memory, and optical logic. The optical pulse generator may be configured to generate an optical interrogation pulse. The optical memory may comprise one or more memory cells. Each memory cell may comprise a phase-change material. The optical memory may be configured to direct the optical interrogation pulse at memory cells thereby generating optical readout pulses. Each optical readout pulse may correspond to a state of the phase-change material in the memory cells thereby encoding data stored in the memory cells. Each optical readout pulse may be directed to the optical logic. The optical logic may be configured to perform at least one logical operation on the data based on the readout pulses.

An apparatus includes a capacitor, a first plurality of transistors, a transmission gate, and a second plurality of transistors. The first plurality of transistors is coupled in series with each other via the capacitor. The first plurality of transistors are coupled between a first supply voltage terminal and a ground terminal. The transmission gate is coupled to a second supply voltage terminal. The second plurality of transistors are coupled to the transmission gate via the capacitor. The second plurality of transistors are coupled to a data input terminal and an output terminal.