58results about "Electric pulse generator details" patented technology

An electrosurgical unit configured to regulate a RF input signal applied to an electrosurgical device, the electrosurgical unit including a PWM circuit to produce a DC voltage responsive to a control signal; an RF waveform generator configured to generate an RF waveform based at least in part on the DC voltage; a transformer configured to transform the RF waveform to the RF input signal in a forward direction across the isolation barrier and transform a leakage current to a feedback current in a reverse direction across the isolation barrier; and a control circuit configured to generate the control signal based at least in part on the first input signal and the second input signal, the control signal controlling a pulse width modulation of the PWM circuit to produce the RF input signal.

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.

Some embodiments include a nanosecond pulse generator circuit. In some embodiments, the nanosecond pulse generator circuit may include: a high-voltage power supply; a nanosecond pulse generator electrically coupled to the high-voltage power supply and switching a voltage from the high-voltage power supply at a high frequency; a transformer having a primary side and a secondary side, the nanosecond pulse generator electrically coupled to the primary side of the transformer; and an energy recovery circuit electrically coupled to the secondary side of the transformer. In some embodiments, the energy recovery circuit includes: an inductor electrically coupled to the high-voltage power supply; a crowbar diode arranged in parallel with the secondary side of the transformer; and a second diode disposed in series with the inductor and arranged to conduct current from a load to the high-voltage power supply.

Methods, apparatus, systems, and articles of manufacture to correct non-linearity in a transmitter are described. An example system includes: an input stage (202); a driver (204), an input terminal of the driver (204) being coupled to an output terminal of the input stage (202); an output buffer (208), an input terminal of the output buffer (208) being coupled to an output terminal of the driver (204), an output terminal of the output buffer (208) being coupled to a first input terminal of the input stage (202) via a resistor (212); and a non-linear correction circuitry (218) having an input terminal and an output terminal, the input terminal of the non-linear correction circuitry (218) being coupled to the output terminal of the output buffer (208) and the first input terminal of the input stage (202) via the resistor (212), the output terminal of the non-linearity correction circuitry (218) is coupled to the output terminal of the input stage (202) and the input terminal of the driver (204).

Methods, apparatus, systems, and articles of manufacture are described to correct non-linearity in transmitters. An example system includes an input stage, a driver, an input terminal of the driver coupled to an output terminal of the input stage; an output buffer, an input terminal of the output buffer coupled to an output terminal of the driver, an output terminal of the output terminal coupled to a first input terminal of the input stage via a resistor; and non-linear correction circuitry having an input terminal and an output terminal, the input terminal of the non-linear correction circuitry coupled to the output terminal of the output buffer and the first input terminal of the input stage via the resistor, the output terminal of the non-linear correction circuitry coupled to the output terminal of the input stage and the input terminal of the driver.

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.

A transmitter employs simple inverters to predrive cascode-connected pull-up and pull-down output stages. Each output stage includes a drive transistor with a thin gate dielectric for fast switching. The drive transistor is cascode connected to a set of parallel-connected transistors. Calibration circuitry selectively enables the parallel-connected transistors to calibrate output resistance. The parallel transistors converge at a single resistor.

The invention provides a bipolar current pulse generator comprising a control signal generation module used for generating a control signal; the driving control circuit module is connected with the control signal generation module and is used for converting the control signal into a current signal; the pulse generation circuit module is connected with the driving control circuit module and is used for generating inductive current according to the current signal; and the direct current power supply is respectively connected with the control signal generation module and the pulse generation circuit module and is used for supplying power to the control signal generation module and the pulse generation circuit module. And the output current does not change along with the change of the load characteristics, and the output current can be adjusted by changing the charging time and the charging voltage and increasing or decreasing the number of circuit stages.

Portable high-voltage electrical stimulation devices and systems are disclosed that are scalable to utilize a minimal number of output channels to a large number of output channels. The devices and systems include a high-voltage power supply and output pulse circuitry comprising a plurality of output channel circuits. The electrical stimulation devices and systems disclosed herein also provide improved safety features, including an optional safety monitor.

Portable high-voltage electrical stimulation devices and systems are disclosed that are scalable to utilize a minimal number of output channels to a large number of output channels. The devices and systems include a high-voltage power supply and output pulse circuitry comprising a plurality of output channel circuits. The electrical stimulation devices and systems disclosed herein also provide improved safety features, including an optional safety monitor.

The utility model provides a pulse power supply which comprises an even number of pulse power units, every two pulse power units are arranged in a mirror symmetry mode, each pulse power unit comprises a direct current bus capacitor, a power electronic switch device, a follow current circuit, a laminated busbar and a first output copper bar, and the direct current bus capacitors are installed on the laminated busbar; the first end of the electronic power switch device is installed on the positive electrode bar of the laminated busbar, and the second end of the electronic power switch device is connected with the first output copper bar. The follow current circuit is installed close to the power electronic switching device and is connected between the negative electrode bar of the laminated busbar and the second end of the power electronic switching device, and the first output copper bar and the negative electrode bar of the laminated busbar are respectively connected with a load through a conductor. The length of the line between the power electronic switching device and the follow current circuit is greatly reduced, so that the parasitic inductance generated by the line is greatly reduced, and the peak voltage is further reduced.

A semiconductor switch drive circuit includes a drive power source and a semiconductor switch drive portion. The semiconductor switch drive portion includes a connection switching portion, a capacitor for generating a positive voltage, a capacitor to be charged with electric power, and a capacitor for generating a negative voltage. The connection switching portion alternately switches between a first connection state forming a positive voltage application closed circuit that applies the positive voltage to a gate terminal of the semiconductor switch, and a second connection state forming a negative voltage application closed circuit that applies the negative voltage to the gate terminal of the semiconductor switch. A transfer restricting portion is provided between the drive power source and the semiconductor switch, the transfer restricting portion restricting transfer of electric charge from a path flowing through the positive voltage application closed circuit to another path passing through a positive terminal of the capacitor and not through the gate terminal of the semiconductor switch.

The technology described herein is directed towards phase change material-based (e.g., chalcogenide) radio frequency switch device. The switch device has phase change material junctions between selectable ports and a common port, in which the phase change material junctions are controlled to be in either conductive or nonconductive states, thereby respectively coupling or decoupling each selectable port to (or from) the common port. A controller can selectively pulse the respective junctions of a multiport switch device to independently determine their respective conductive or nonconductive states. In one implementation, the switch design is symmetrical so that any one of the multiple selectable ports has very similar performance characteristics to that of any other selectable port. The phase change alloy switch device described herein provides high switching speeds, low insertion loss, good isolation and is relatively straightforward to fabricate.

An integrated circuit comprises an oscillator which outputs a clock signal, a logic circuit portion, a detection circuit portion for detecting signal propagation delay relative to clock frequency, and a power supply which provides a configurable supply voltage. The detection circuit comprises a latch circuit portion, a delay circuit portion and a comparison circuit portion. The latch circuit portion outputs an alternating signal which changes state in dependence on the clock signal. This is received by the delay circuit portion which outputs first and second delayed signals respectively subject to first and second propagation delays each dependent on the supply voltage. The comparison circuit portion compares the alternating signal with the delayed signals, and outputs respective comparison signals if said signals indicate that the respective propagation delay is smaller than the clock signal period. A control circuit portion controls the supply voltage in dependence on the comparison signals.

The invention relates to the technical field of signal processing, and provides a multi-channel pulse low and medium frequency signal generation system, which comprises a signal generation unit used for generating a multi-channel pulse signal, a low frequency signal and a carrier signal; the multi-channel pulse signal modulation unit is used for modulating the multi-channel pulse signal to generate a multi-channel modulation pulse signal; the power control unit is used for performing power control on the low-frequency signal and the multi-channel modulation pulse signal to generate a target low-frequency signal and a multi-channel target pulse signal; and the low and medium frequency signal modulation unit is used for synthesizing the target low frequency signal, the multi-channel target pulse signal and a carrier signal to generate a multi-channel pulse low and medium frequency signal. According to the system, through multi-channel pulse signal modulation and power control, multi-channel pulse low and medium frequency signals are accurately generated, and the flexibility and adaptability of the signals are enhanced.

A high voltage pulse power delivery system is provided that includes dedicated safety features including fault detection and fault management. Alongside normal communications cabling, the pulse power delivery system provides remote power over standard multi-conductor cabling without dedicated conduit or separation. This simplifies installation of equipment, increases overall speed of deployment, and significantly reduces cost for deployment. The pulse power delivery system is further configured to transport power through a pulse current waveform.

The invention discloses a pulse energy storage high-voltage power supply in Z-type connection, and relates to the technical field of power electronics, and the high-voltage power supply comprises a supporting structure and a power supply module. The support structure comprises a power ground metal plate, a plurality of post insulators and an epoxy support bottom plate, one end of each post insulator is connected with the power ground metal plate, and the other end of each post insulator is connected with the epoxy support bottom plate; a plurality of module cavities are formed above the epoxy bracket bottom plate through the epoxy bracket top plate, the epoxy bracket partition plate, the spacing vertical plate and the epoxy bracket vertical plate; the number of the power supply modules is multiple, all the power supply modules are located in the multiple module cavities respectively, and all the power supply modules are sequentially connected in series in a Z-shaped connection mode. And through a Z-shaped connection method of the power supply module, the supporting height of the epoxy bracket is reduced, and the occupied space of the energy storage type high-voltage power supply is reduced.

To increase clamp tolerance.SOLUTION: An output stage switch 1a is connected to an L load 2 and operates the L load 2 by switching. A voltage detection circuit 1b outputs a detection signal if an overvoltage due to counter electromotive force generated in the L load 2 at turn-off following turn-on of the output stage switch 1a is detected to be a predetermined voltage of a clamp voltage or more. A driving circuit 1c causes the output stage switch 1a to be turned-on by applying a driving signal V1 having a threshold voltage Vth1 to the gate of the output stage switch 1a in a state that the overvoltage is less than the predetermined voltage. A voltage application circuit 1d causes the output stage switch 1a to be turned-on by applying a voltage signal V2 having a threshold voltage Vth2 higher than the threshold voltage Vth1 to the gate of the output stage switch 1a if the overvoltage becomes the predetermined voltage or more and the detection signal outputted from the voltage detection circuit 1b is received.SELECTED DRAWING: Figure 1

The invention relates to a data diode and a pulse control method, which can be used to ensure safety and remotely deal with bad situations. The present invention is provided with: a transmission-side device (11) that transmits data from an OT network; a reception-side device (13) that transmits the input data to the IT network; and a one-way communication unit (12) that transmits the data transmitted by the transmission-side device (11) to the reception-side device (13), the reception-side device (13) having a pulse generation unit (134) that is activated in response to an instruction from an IT network and generates a pulse signal, and the transmission-side device (11) having a pulse output unit (114) that outputs a pulse signal to the reception-side device (13), the pulse signal generating unit (134) being activated in response to an instruction from the IT network. And a pulse output unit (114) that outputs the pulse signal generated by the pulse generation unit (134) to an OT-side device (2) connected to the OT network.

A semiconductor device with a small circuit scale is provided. The semiconductor device includes a first circuit and a second circuit. The first circuit includes first to n-th (n is an integer of 2 or more) transistors and the second circuit includes (n+1)-th to 2n-th transistors. The first to n-th transistors are connected in parallel to each other and the (n+1)-th to 2n-th transistors are connected in series to each other. First to n-th signals are supplied to the first circuit and the second circuit. The first circuit has a function of outputting a first potential when each of potentials of the first to n-th signals is lower than or equal to a first reference potential, and outputting a second potential when at least one of the potentials of the first to n-th signals is higher than the first reference potential. The second circuit has a function of outputting a third potential when each of the potentials of the first to n-th signals is higher than a second reference potential, and outputting the first potential when at least one of the potentials of the first to n-th signals is lower than or equal to the second reference potential.

Measuring device (10) with a measuring device (11) which is designed to perform a measurement task based on initial measurement parameters, characterized by that the measuring instrument (10) has a synchronization device (12) which is designed to synchronize the first measurement parameters with another measuring instrument (20), and that the measuring instrument (10) is designed to perform a measurement task together with the further measuring instrument (20) based on at least the first measurement parameters.

The present invention provides a circuit including a logic circuit and a power switch module. The power switch module includes multiple switches, a voltage detection circuit and a control circuit. Each switch includes a control node, a first node and a second node, the first node is coupled to a supply voltage, the second node is coupled to the logic circuit; and the multiple switches comprise a first switch and multiple second switches, and the control node of the first switch receives a power enable signal. The voltage detection circuit is configured to detect whether a voltage of the second node of the first switch is greater than a reference voltage to generate a detection result. The control circuit is configured to generate an output power enable signal to the multiple second switches according to the detection result.

A modular compact high-voltage pulse power supply structure disclosed by the present invention comprises a power supply, a ventilation net is fixedly connected to one side of the power supply, mounting rails are fixedly connected to the upper and lower sides of the interior of the power supply, a filter frame is slidably connected between the mounting rails and the ventilation net, and a filter plate is fixedly connected to one side, away from the ventilation net, of the filter frame. Two sets of mounting rods are fixedly connected to the upper side and the lower side of the interior of the filtering frame, movable plates are slidably connected to the outer sides of the mounting rods, a ventilation pipe is fixedly connected to the interior of one side of the power source, filtering nets are arranged at the two ends of the ventilation pipe, a connecting frame is fixedly connected to the front side of the power source, and adjusting grooves are formed in the upper side and the lower side of the connecting frame; fifth connecting lugs are slidably connected into the adjusting grooves, a mounting frame is fixedly connected between the fifth connecting lugs on the upper side and the lower side, and an upper clamping plate and a lower clamping plate are slidably connected into the mounting frame, so that dust can be effectively prevented from entering the power supply or entering a connector of a power supply system to cause internal short circuit.

A high voltage pulse power delivery system is provided that includes dedicated safety features including fault detection and fault management. Alongside normal communications cabling, the pulse power delivery system provides remote power over standard multi-conductor cabling without dedicated conduit or separation. This simplifies installation of equipment, increases overall speed of deployment, and significantly reduces cost for deployment. The pulse power delivery system is further configured to transport power through a pulse current waveform.

Portable high-voltage electrical stimulation devices and systems are disclosed that are scalable to utilize a minimal number of output channels to a large number of output channels. The devices and systems include a high-voltage power supply and output pulse circuitry comprising a plurality of output channel circuits. The electrical stimulation devices and systems disclosed herein also provide improved safety features, including an optional safety monitor.

A pulse generator includes a circuit configured to generate a coarse pulse width (CPW) signal, a first delay unit configured to generate a first delayed coarse pulse width signal, a delay-locked loop circuit configured to generate a first sub-phase signal and a second sub-phase signal, a first analog interpolator, a second analog interpolator, and an amplifier having a first input connected to the first analog interpolator and a second input connected to the second analog interpolator and configured to generate a fine pulse width modulation signal.

A high-voltage pulse power supply system is provided with a dedicated safety function including fault detection and fault management. In addition to ordinary communication cables, the pulse power supply system provides remote power via standard multi-conductor cables without dedicated conduits or separation. This simplifies the installation of equipment, improves the overall speed of deployment, and significantly reduces deployment costs. The pulse power supply system is further configured to transport power through a pulse current waveform.

Embodiments relate to a waveform processing device. The device can include a first input node configured to receive a first signal and a second input node configured to receive a second signal. The device can include a pulse generator including a self-timed digital converter (DTC) with a clock generator (CLK). The device can include a switching network configured to be driven by an output from the pulse generator to modulate the first signal and the second signal in synchronization.

Method and waveform generator for generating at least two signals. The signals are generated by separate channels, with each channel having a numerically controlled oscillator and a digital envelope generator, whose outputs are multiplied and fed to a digital-analog converter. The signal from the digital-analog converter is multiplied with the signal from a local oscillator for generating pulses with an up-converted carrier. The phases of the numerically controlled oscillators are changed between pulses in order to adjust the phase of the up-converted carrier. This allows to generate pulses where the up-converted carriers have a defined phase relationship.