40 results about "Voltage multiplier" patented technology

The invention provides a parameter design method for a multi-voltage rectification LCC converter, and the method comprises the steps: building a voltage precise mathematical model of a resonant cavity parallel capacitor through employing a fundamental wave equivalent method based on the condition that output capacitors of the multi-voltage rectification LCC converter and a multi-voltage rectifier participate in resonance; the gain of the voltage-multiplying LCC resonant converter is modeled through a voltage accurate mathematical model of a resonant cavity shunt capacitor; determining the number of rectifier bridges, the turn ratio of a transformer and the capacitance value of a rectification voltage-multiplying capacitor according to the voltage of the parallel capacitor of the resonant cavity and the gain of the voltage-multiplying LCC resonant converter; and determining values of the resonant cavity series-parallel capacitor and the resonant cavity inductor according to the capacitance value of the rectification voltage-multiplying capacitor. According to the method, analysis and calculation of the output filter capacitance are incorporated into parameter design of accurate modeling, a scheme for selecting the number of the voltage doubling rectifier bridges is given, and the size can be reduced and economic benefits can be increased under the condition that working condition requirements are met.

The invention provides a handheld shock wave generating system which comprises a shock wave balloon and a driving circuit, and the driving circuit comprises a primary power supply circuit, a high-voltage booster circuit, a voltage doubling circuit and a control circuit. After a voltage signal VCCS2 output by the primary power supply circuit is subjected to self-oscillation and boosting of the high-voltage boosting circuit and multiple rounds of voltage multiplication of the voltage doubling circuit, the voltage signal VCCS2 can be increased by hundreds or even thousands of times, a storage battery and a mains supply do not need to be used, miniaturization can be achieved, and carrying is convenient.

This invention relates to an active dual-switched capacitor coupled DC / DC converter with a reverse magnetic winding, belonging to the field of optics. It solves the problem that existing DC converters cannot simultaneously achieve low turns ratios and high voltage gain. The invention combines inductors, capacitors, diodes, and coupled inductors (N1, N2) in a specific series-cross connection to form an integrated high-gain unit. Through a reverse-coupled inductor voltage multiplier circuit (composed of multi-winding coupled inductors N1 and N2 connected in reverse, diode D1, and capacitor C1) and an active dual-switched capacitor structure (composed of power switches S1 and S2, capacitor C2, and diodes D2 and D3), the proposed converter can generate high voltage gain at low turns ratios. This invention is primarily applied in high boost ratio DC power conversion applications.

A generator with a regeneration device. The electrosurgical generator according to the invention includes an oscillating circuit excited by means of an excitation circuit having a frequency preferably close to its resonant frequency, wherein the oscillation should be periodically interrupted. This can be done, for example, in situations where a pulse-pause modulation of a radio frequency voltage must be created, the fundamental frequency of which, for example, 350 kHz or 500 kHz, can be modulated with a modulation frequency of, for example, 50 kHz. To stop the oscillation in the generator's oscillating circuit as abruptly as possible without losing the energy stored in the oscillating circuit, a regeneration circuit is provided, implemented by means of a voltage multiplier circuit. Compared to a boost converter coupled inductor, it has the advantage of providing a low capacitive load to the oscillating circuit, especially because it is only electrically effectively connected to the oscillating circuit via a switch during the regeneration phase. This concept allows for efficient energy regeneration and therefore allows for precise amplitude modulation of the radio frequency voltage, particularly square wave modulation (on-off-switch).

This invention relates to the field of high-voltage electrostatic powder coating equipment technology, specifically providing a voltage multiplier assembly for a high-voltage electrostatic powder coating high-voltage pack. The assembly includes a circuit board, multiple voltage multiplier components, and a connection structure. The circuit board integrates pre-set wiring circuits and mounting positions, each corresponding to a voltage multiplier component. The voltage multiplier components are fixedly mounted on their respective mounting positions. Multiple voltage multiplier components are electrically connected through the pre-set wiring circuits on the circuit board, forming a complete voltage multiplier rectifier circuit. The connection structure is located on the circuit board and is used to fix the voltage multiplier assembly to other components of the high-voltage pack specifically used for the powder coating process. During assembly, the voltage multiplier components are simply soldered to their corresponding mounting positions and then fixed using the connection structure. This simplifies the process, makes operation convenient and quick, and can adapt to the needs of large-scale production, providing support for the mass production of high-voltage packs specifically used for the powder coating process.

The application belongs to the technical field of electronic measurement, and discloses a semiconductor device capacitance voltage test system and method. The power supply circuit based on the combination of high-frequency PWM voltage increase and symmetrical topology voltage multiplier chain is used to solve the bottleneck problem that the existing portable device is difficult to efficiently generate a wide range of symmetrical bipolar high-voltage bias in a compact volume. The differential pulse width modulation measurement circuit based on AC / DC isolation is used to inject measurement pulses with opposite phases and perform differential sampling, so as to solve the problem that the existing single-ended measurement method is extremely sensitive to common-mode noise and ground line interference, resulting in low reliability in the field environment, and improve the measurement accuracy and stability. The software timing control method based on dynamic output baseline correction is proposed, and the intelligent sequence of stabilization-evaluation output baseline-measurement-compensation is used at each bias point to solve the slow response phenomenon existing in the existing method.

Device (1) able to process a pilot control signal (CP) having at least two modes: direct current or PWM alternating, and able to generate a binary detection signal (SD) whose state indicates the mode, the device (1) comprising a voltage multiplier (D) and a comparator (C).

A device includes a capacitive element that is coupled between first and second nodes and that includes a first well region, a second well region, and a transistor. The second well region is formed in the first well region, has a different conductivity type than the first well region, and is coupled to the second node. The transistor includes source and drain regions formed in the second well region and coupled to each other and to the second node, a channel region between the source and drain regions, and a gate region over the channel region. The first well region and the gate region are coupled to each other and to the first node, whereby a capacitance of the capacitive element is increased without substantially enlarging a physical size of the capacitive element.

This invention discloses a laser ranging device, relating to the field of laser ranging technology. The laser ranging device includes an external power supply connection terminal, a boost circuit, a control circuit, a voltage multiplier circuit, a photoelectric converter, and a laser emitting circuit. An external voltage is connected through the external power supply connection terminal. The boost circuit raises the external voltage to a first voltage. The control circuit controls the boost circuit to periodically turn on and off. The voltage multiplier circuit further raises the first voltage and outputs it to the photoelectric converter and the laser emitting circuit. The photoelectric converter receives the laser signal reflected from the target and converts it into an electrical signal. The control circuit controls the laser emitting circuit to emit laser pulses and receives the converted electrical signal from the photoelectric converter. The distance to the target is calculated based on the time difference between the emitted laser pulse and the electrical signal. The technical solution provided by this invention can solve the problems of limited boost amplitude, complex circuitry, and high cost in existing technologies.

A high-voltage spiral voltage multiplier includes an outer metal film and an inner metal film which are constructed into a spiral bifilar winding configuration, a first insulating film between the outer metal film and the inner metal film, and a second insulating film between the inner metal film and a further outer metal film adjacent thereto. The outer metal film and the inner metal film are spirally bifilarly wound into N turns of winding, center positions of any two adjacent turns being axially offset by at least a predetermined offset distance.

The utility model discloses a distribution line detection device, which comprises an installation body, and a voltage regulator, an industrial frequency transformer, an industrial frequency voltage doubling rectifier module, a high voltage output module, a measurement module and a display module which are arranged in the installation body, the power frequency transformer is connected to the voltage regulator, the power frequency voltage doubling rectifier module is connected to the power frequency transformer, the high-voltage output module is connected to the power frequency voltage doubling rectifier module, the measurement module is connected to the high-voltage output module, and the display module is connected to the measurement module.

The present disclosure provides a voltage doubling circuit including a silicon controlled rectifier (SCR) having a control circuit configured to charge a charging capacitor during a negative alternating current period, and including a storage capacitor that receives a voltage from the charging capacitor during a positive alternating current period, and by charging the storage capacitor from the charging capacitor when the SCR is turned off, the storage capacitor is prevented from exceeding its regulated voltage even if the SCR fails.

This invention relates to the field of electronic cigarette technology, specifically disclosing an airflow sensing device and an electronic cigarette. The airflow sensing device includes: an airflow sensor, a calibration module, a signal conversion module, a drive module, and a heating wire connected in sequence. The calibration module includes: an initial value control logic unit and a first operational amplifier. The signal conversion module includes: a transconductance amplifier, a voltage multiplier resistor, and a second operational amplifier. The drive module includes: multiple comparators and a current drive unit. When the capacitance of the airflow sensor changes according to the airflow variation, the transconductance amplifier converts the voltage difference between the voltage across the capacitor and the first reference voltage into a current signal. The voltage multiplier resistor converts the current signal into a voltage signal. Each comparator generates a different switching signal by comparing the voltage signal with the gear voltage. The current drive unit generates a drive current signal based on the switching signal to drive the heating wire.

The invention discloses electromagnetic stimulation equipment and a multi-stage boosting device thereof, the multi-stage boosting device is formed by connecting a plurality of basic voltage multipliers, and a plurality of first current direction limiting elements, a plurality of second current direction limiting elements, a first energy storage element and a second energy storage element are used for storing energy to generate direct-current high-voltage electricity for electromagnetic stimulation. Furthermore, the first current direction limiting element and the first energy storage element are electrically connected in series with an external power supply, the first current direction limiting element is connected in parallel with a second current direction limiting element which is opposite to the current limiting direction of the first current direction limiting element, and the second current direction limiting element is connected in series with the second energy storage element; the first current direction limiting element and the second current direction limiting element are conducted or not conducted along with the polarity of the input voltage and are used for switching the current direction so that the external power supply can charge the first energy storage element and the second energy storage element in different periods respectively, the external power supply and the first energy storage element provide charging in the charging process of the second energy storage element, and the cross voltage is two times that of the first energy storage element. And the second energy storage elements are mutually connected in series for output application.

An X-ray source driving circuit and an X-ray generation device using the same are proposed. An objective of the present disclosure is to provide an X-ray source driving circuit having a low possibility of dielectric breakdown and capable of reducing an insulation distance between high voltage circuits, and to provide an X-ray generation device of which the size and weight may be reduced by using the same. To this end, the X-ray generation device includes an X-ray source including a cathode electrode, an anode electrode, and a gate electrode and configured to generate X-rays with a driving voltage applied to each electrode, a first voltage converter including a first transformer and at least one voltage multiplier for multiplying a first voltage output from the first transformer, and a second voltage converter including a second transformer and a voltage multiplier for multiplying a second voltage output from the second transformer.

The embodiment of the invention provides a full-consumable intravascular calcification shock wave treatment method and system, and the system comprises a power module which is used for supplying power to intravascular calcification shock wave equipment; the buck-boost control module is used for performing buck-boost processing on the voltage output by the power supply module to obtain driving voltage; the voltage-multiplying output module is used for generating a target high voltage at an output port based on the driving voltage; the voltage sampling module is used for sampling a target high voltage, comparing a sampled voltage value with a preset high voltage value to obtain a comparison result, and feeding back the comparison result to the main control module; the main control module is used for controlling the buck-boost control module and the voltage-multiplying output module to carry out voltage adjustment based on the comparison result to obtain a preset high voltage value; and the passive discharge module is used for performing passive discharge on the discharge electrode based on a preset high voltage value to complete intravascular calcification treatment. According to the scheme, the applicability of intravascular calcification shock wave treatment can be improved.

The invention discloses a TENG power supply management circuit, and the circuit comprises a TENG module which is used for converting mechanical energy into electric energy; the input end of the Bennet voltage doubling circuit module is electrically connected with the output end of the TENG module, and the Bennet voltage doubling circuit module is used for accumulating charges generated by the TENG module and boosting voltage; the input end of the GDT module is electrically connected with the output end of the Bennet voltage doubling circuit module, and the output end of the GDT module is used for being connected with a load; and the GDT module is configured to be converted from a high impedance state to a low impedance state when voltages at two ends of the GDT module reach breakdown voltages, so that energy stored in the TENG module and the Bennet voltage doubling circuit module is released to a load in a pulse form. The TENG power supply management circuit realizes reliable collection and utilization of tiny electric energy in the environment.

This invention belongs to the field of power electronic converter technology and discloses an automatic current-sharing high-gain boost converter and its application in photovoltaic charging devices. This automatic current-sharing high-gain boost converter employs two different voltage multiplier units, inserted at the midpoint of the bridge arm of a two-phase interleaved parallel circuit, and then cascaded with a half-wave rectifier circuit. This ensures that each inductor discharge circuit contains (m+n+1) diodes, thereby automatically achieving inductor current sharing. Furthermore, it achieves a voltage gain of 2(m+n+1) / (1-D) with a relatively small number of components, and features low switching transistor voltage stress, low diode voltage stress, low input current ripple, and common ground drive for all switching transistors. The boost requirements can be flexibly met by freely matching the number of switched capacitors n and m in the boost unit.

This invention discloses a bipolar high-voltage pulse driving circuit and driving method for an air-coupled ultrasonic transducer. The driving circuit includes a control circuit, an auxiliary power supply circuit, a pulse transmitting unit, and a high-voltage output unit. The high-voltage output unit includes a high-frequency inverter circuit, a high-frequency transformer T1, and a voltage multiplier rectifier circuit. This bipolar high-voltage pulse driving circuit and driving method can generate a controllable bipolar high-voltage excitation signal while meeting the high-voltage driving requirements of the ultrasonic transducer using only a low-voltage power supply, significantly improving the received ultrasonic energy.

Disclosed in the present invention is a high-voltage spiral voltage multiplier, comprising an outer metal film, an inner metal film, a first insulating film and a second insulating film. The outer metal film and the inner metal film are of a spiral double-wire winding structure; the first insulating film is arranged between the outer metal film and the inner metal film; the second insulating film is arranged between the inner metal film and the outer metal film; the outer metal film and the inner metal film are of the spiral double-wire winding structure to form N turns of winding; and the central positions of any two adjacent turns differ by at least a set offset distance in the axial direction. In the present invention, the spiral winding structure is optimized, the insulation distance is increased, the surface insulation effect is improved, components do not need to be added or deleted, and the winding processing difficulty is basically not improved compared with conventional solutions. In addition, the present solution has scalability, and the offset distance and offset direction of the winding structure can be flexibly adjusted on the basis of actual structure sizes, thereby exerting the optimal insulation effect of the winding structure and reducing the risk of flashover.

The present application relates to the technical field of high-voltage power supply control, and discloses a high-voltage generation circuit parameter optimization design method of an X-ray tube, comprising the following steps: step one, constructing a three-stage cascaded boost topology architecture composed of a first-stage flyback conversion circuit, a second-stage full-bridge LLC resonant conversion circuit and a third-stage 24 times voltage multiplier rectifier circuit; step two, establishing a charge dynamic flow transfer model based on the 24 times voltage multiplier rectifier circuit, and calculating an estimated ripple voltage at an output end of the 24 times voltage multiplier rectifier circuit by using the charge dynamic flow transfer model. The three-stage cascaded boost topology architecture is adopted, and through multi-stage gain distribution and high-frequency conversion technology, the technical effect of replacing a traditional giant power-frequency transformer with a miniaturized high-frequency transformer and a charge pump component is achieved, the high integration of an internal high-voltage power supply system of a handheld X-ray device is realized, and the deficiency that the existing technology is difficult to realize lightweight and miniaturized operation of the device due to the huge size of the transformer and the cascaded component is solved.

The invention discloses a mirror image high-gain Boost converter with switch tubes synchronously switched on and switched off, and belongs to the technical field of power electronic direct current conversion. The converter comprises a direct-current voltage source, two inductors, seven capacitors, seven diodes and two MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) switching tubes. The core innovation lies in that the two switching tubes are completely and synchronously switched on and switched off, no dead time needs to be set, and the control logic is simplified. Through specific connection and multiplexing of a capacitor and an inductor, an efficient voltage-multiplying unit is formed, extremely high voltage gain is achieved, the gain formula is shown in the specification, and D is the duty ratio of a switching tube. According to the structure, high gain is obtained, meanwhile, the voltage stress of the switching tube is remarkably reduced, the value of the voltage stress is only output voltage, and the switching loss is effectively reduced. The device has the advantages of being small in number of devices, compact in structure, high in efficiency, low in cost and the like, and is particularly suitable for occasions where low input voltage needs to be boosted to high direct current bus voltage in the new energy field of photovoltaic systems, energy storage systems and the like.

A driver device is configured to operate a speaker device to generate an audio signal. The speaker device includes at least one membrane configured to generate an ultrasonic acoustic signal and at least one shutter configured to modulate the ultrasonic acoustic signal. The driver device includes a plurality of combined charge pump and output driver (CCPD) cells. Each CCPD includes a single or multi-stage voltage multiplier with a pump input and pump output; a local charge storage capacitor; and an output buffer. The pump input of a first CCPD is connected to a pump output of a second CCPD. A controller is configured to operate the CCPD stack to generate an ultrasonic driving signal for the membrane and generate an ultrasonic driving signal for the shutter.

The invention provides a voltage generation circuit, a memory and a storage system, and relates to the technical field of storage. The voltage generation circuit comprises a clock voltage doubling circuit and a charge pump circuit, the clock voltage doubling circuit comprises a first signal generation circuit, a second signal generation circuit and a first output circuit. The first signal generation circuit is configured to apply a positive voltage signal to a first electrode of the MOS tube in the first output circuit and apply a source voltage signal to a second electrode of the MOS tube in the first output circuit under the control of an input first clock signal; the second signal generation circuit is configured to apply a second clock signal to a third electrode of the MOS tube in the first output circuit under the control of the input first clock signal; the second clock signal is different from the first clock signal; and the first output circuit is configured to output the voltage-multiplying clock signal to the charge pump circuit under the control of the second clock signal.

A corona current generator for a small-caliber electric bullet comprises a power supply, a starting switch, a voltage converter, a voltage multiplier, an electronic switch, an output electrode and a clock generator with a solid-state output switch. The voltage converter converts a low voltage from a power supply to a boosted AC voltage. A voltage multiplier for multiplying the output voltage of the converter is provided with an additional output energy storage capacitor, the discharge process of which to the generator output electrode is controlled by a clock generator with a solid-state output switch. The technical result consists in providing a more efficient and more economical consumption of the current from the power source, effectively securing a biological target having a body weight of not less than 70-80 kg, and enabling the target to be stunned by both output electrodes of the generator, or one output electrode, with a wire from the power source.

This invention provides an adjustable voltage charge pump circuit and device. The circuit includes a voltage multiplier module, a voltage booster module, and a voltage output module. The voltage multiplier module, the voltage booster module, and the voltage output module are all connected to a clock module. The voltage multiplier module is connected to the voltage booster module. The voltage multiplier module generates a voltage multiplier signal based on the clock signal and outputs the voltage multiplier signal to the voltage booster module. The voltage booster module generates a boost signal based on the clock signal and the voltage multiplier signal and outputs the boost signal to the voltage output module. The voltage output module generates an output signal based on the clock signal and the boost signal. This application has the advantages of a wider voltage range for the circuit output signal and greater flexibility in adjusting the circuit output signal.

The present invention provides an X-ray generation module comprising: an X-ray tube having an anode provided with a target and a cathode provided with a filament; a positive power supply voltage multiplier configured to provide a doubled voltage to the anode; a negative power supply voltage multiplier configured to provide a voltage after voltage doubling to the cathode; the high-voltage transformer is configured to provide boosted voltage for the positive power supply voltage multiplier and the negative power supply voltage multiplier, and the high-voltage transformer, the positive power supply voltage multiplier and the negative power supply voltage multiplier are arranged in a single row; and a filament transformer configured to supply a tube current having electrons moving toward the target to the filament, and to insulate a doubled voltage supplied to the cathode by the negative power source voltage multiplier, and the positive power supply voltage multiplier, the negative power supply voltage multiplier and the high-voltage transformer are arranged in the single row together.

A power supply circuit for an electricity meter is disclosed for converting an input AC voltage into an output DC voltage for supply to circuitry of the electricity meter, wherein the power supply circuit comprises a voltage multiplier clamp comprising a primary energy storage capacitance; and a switched DC to DC converter comprising a secondary energy storage capacitance. The voltage multiplier clamp is configured to multiply and rectify the input AC voltage to generate a primary DC voltage across the primary energy storage capacitance whilst also limiting the primary DC voltage. The switched DC to DC converter is configured to convert the primary DC voltage into a secondary DC voltage across the secondary energy storage capacitance for supply as the output DC voltage to the circuitry of the electricity meter. The power supply circuit may be configured to store sufficient energy to maintain a DC output voltage within a predetermined voltage range for a predetermined holdup time after a loss or reduction of an input AC line voltage.

This invention discloses a zero-detection device for porcelain insulators and a method for zero-detection of small current and distributed voltage in high-voltage circuits. The zero-detection device for porcelain insulators includes: a low-voltage pulse generator for converting a received voltage signal into a voltage pulse signal of a set frequency; a step-up transformer for converting the voltage pulse signal generated by the low-voltage pulse generator into voltage signal one; a voltage multiplier circuit for converting voltage signal one output from the step-up transformer into voltage signal two; a detection circuit for converting voltage signal two output from the voltage multiplier circuit into a detection signal; and discharge terminals POUT+ and POUT- connected to the output terminal of the detection circuit for bonding to the steel caps at both ends of the porcelain insulator. This invention ensures that the insulator is not damaged during the measurement process and can comprehensively detect defects in the insulator.