72 results about "Voltage doubler" patented technology

The utility model relates to an electric flame stove, which comprises a case, a driving module, a voltage doubling rectifying module, a burner, a metal shell and a high-voltage transformer, wherein the burner is arranged on the case; the metal shell is arranged in the case and is provided with a containing cavity; the high-voltage transformer is used for being connected with input voltage; the driving module is connected with the furnace end through the high-voltage transformer and the voltage doubling rectifying module, and the high-voltage transformer is located in the metal shell. The influence of a magnetic field generated by the high-voltage transformer on the voltage doubling rectifying unit and the interference of the magnetic field on external electric appliances can be eliminated, meanwhile, eddy current generated by the high-voltage transformer can promote the high-voltage transformer, and then the conversion efficiency of the high-voltage transformer is improved.

The invention discloses an insulation resistance measurement method, a measurement module and an anti-reverse power transmission isolation device, and relates to the field of operation and maintenance of distribution lines, and the key points of the technical scheme are as follows: a control voltage signal is generated according to the voltage demand of the insulation resistance of a test line sent by a user, and a PWM square wave signal with a duty ratio is generated according to the control voltage signal; performing high-frequency voltage transformation and voltage doubling rectification on the PWM square wave signal to obtain a direct-current voltage; calculating a current average value of the measurement loop when each resistance measurement gear is switched; presetting a current coefficient of each resistance measurement gear and weight coefficients of two adjacent resistance measurement gears; and when the current average value is greater than or equal to the product of the current coefficient and the weight coefficient, calculating the insulation resistance value of the measured circuit according to the current average value, the direct-current voltage and the resistance value corresponding to the resistance measurement gear.

A system for harvesting power from AC current in a power line, including a split magnetic core having two halves, wherein the two halves of the magnetic core are configured to enclose around the power line; a coil is wrapped around one or two halves of the magnetic core with a first end and a second end of the coil configured to provide current from the coil; a power harvesting circuit is configured to harvest current from AC current in the power line, the power harvesting circuit including a rectifier and at least one voltage multiplier electrically connected in parallel to the rectifier; and wherein an output of the coil is connected to an input of said power harvesting circuit and an output of the power harvesting circuit is configured to supply voltage and current to load circuits.

To provide a power unit which includes a voltage doubler rectifying / smoothing circuit by which fixed output voltage is obtained irrespective of input voltage and setting of the output voltage can be easily changed.SOLUTION: A transformer comprises a winding 26 for voltage generation where a ground terminal 26g is connected with a first ground line 36, and in an oscillation terminal 26s, rectangular wave voltage Vs oscillating in a positive direction and a negative direction based on the first ground line 36 is generated. A power unit comprises an auxiliary switch 56 inserted into a position in series with a coupling capacitor 32a of a voltage doubler rectifying / smoothing circuit 32. The power unit comprises a switch control circuit 58 which performs control for holding the auxiliary switch 56 in an off state at least in a specific period of a period Tb in which the rectangular wave voltage Vs oscillates in the negative direction. Rise of both end voltage Vc of the coupling capacitor 32a to the fixed or higher level is inhibited and output voltage Vo3 generated in a smoothing capacitor 32d of the voltage doubler rectifying / smoothing circuit 32 is held at a target value Vr by the control of the switch control circuit 58.SELECTED DRAWING: Figure 1

The application is suitable for the field of power electronics, and provides a lightweight high-voltage power supply for electric air power propulsion and a design method thereof.The high-voltage power supply comprises an input voltage end, a full-bridge inverter metal-oxide semiconductor field effect transistor, a resonance capacitor, a magnetic integrated transformer group, a plurality of voltage doubler rectifiers, an arc striking suppression resistor, a feedforward constant power feedback control circuit, a current transformer, an overcurrent protection circuit, a load and a driving circuit.The main circuit of the application adopts the structure of full-bridge inverter-magnetic integrated transformer group-voltage doubler rectifier output, without additional addition of resonance inductor, parallel capacitor and output capacitor, so as to reduce the weight ratio of the high-voltage power supply in the electric air power propulsion aircraft;feedforward constant power control and arc striking suppression circuit are used in control, so as to guarantee the stable operation of the high-voltage power supply under the conditions of lightweight and high power density, and finally realize the lightweight and high reliability of the overall electric air power propulsion aircraft.

The invention provides a microwave drive control device. The microwave drive control device comprises a power converter; the first full-bridge inverter circuit is conductively connected with the power converter; the first voltage transformation circuit is connected with the first full-bridge inverter circuit in a conducting manner; the voltage doubling circuit is conductively connected with the first voltage transformation circuit; the magnetron is conductively connected with the voltage doubling circuit, and the magnetron is provided with a lamp filament; and the filament preheating circuit is conductively connected with the power converter and the filament of the magnetron, and the filament preheating circuit is used for preheating the filament before the high voltage is sent to the magnetron and is triggered after the filament is heated to a hot electron emission temperature. Through the filament preheating circuit, the filament can be preheated and then is driven by high voltage, so that the service life of the filament can be prolonged. In addition, the service life of the lamp filament is predicted by detecting the resistance value of the lamp filament and through a curve of the resistance value and the service life of the lamp filament.

The invention relates to the technical field of xenon lamp power supply control, in particular to a xenon lamp power supply adaptive structure based on analog control. According to the technical scheme, the circuit comprises a rectification filtering module, an LCC half-bridge resonance circuit, a transformer, a voltage doubling circuit, a full-bridge rectification circuit and a control unit which are connected in sequence. A primary coil of the transformer is connected with the LCC half-bridge resonance circuit, and two secondary coils of the transformer are respectively connected with the input end of the voltage doubling circuit and the input end of the full-bridge rectification circuit; and the output end of the voltage doubling circuit is coupled to an upper bridge arm node of the full-bridge rectifying circuit. Through combination of high-frequency resonant topology and analog feedback control, the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching are realized while the power supply volume (a high-frequency transformer replaces an industrial frequency transformer) is remarkably reduced, the defects of large volume and high loss of a traditional scheme are overcome, and the reliability of the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching is improved. And the pre-combustion success rate is improved, the switching loss is reduced, and the reliability, the energy efficiency and the adaptability of the xenon lamp power supply are comprehensively optimized.

This disclosure describes systems, methods, and apparatuses for a power supply, the power supply configured for monitoring a voltage at an output end of the power supply; controlling, based on the voltage exceeding a first threshold, a first switch to connect a plurality of secondary windings of the power supply in series; and controlling, based on the voltage exceeding a second threshold, at least one other switch to switch in at least one capacitor into the power supply, wherein the second threshold is greater than the first threshold.

The utility model discloses an optical fiber welding circuit, which relates to the technical field of optical fibers, and comprises a power supply, a control module, a voltage doubling module, a current sampling module, a first electrode needle and a second electrode needle, and the control module comprises a control unit and a voltage output unit; when an arc current signal received by the feedback end of an error amplifier in the control unit is increased, the voltage of the output end of the error amplifier is reduced, and when the voltage of the output end of the error amplifier is reduced, the PWM duty ratio output by the duty ratio output end of the control unit is reduced. When the arc current signal received by the feedback end of the error amplifier of the control module is increased, the voltage of the output end of the error amplifier is increased, and when the voltage of the output end of the error amplifier is increased, the PWM duty ratio output by the duty ratio output end of the control unit is increased. According to the utility model, the technical problem of unstable optical fiber welding is solved.

This invention discloses an LLC resonant converter with a wide output voltage range based on a voltage doubler rectifier, applicable to DC fast charging of new energy vehicles. The converter achieves primary-side inversion and secondary-side rectification topology reconfiguration through switch drive signals, enabling wide-range voltage output in four operating modes. The primary side can switch between half-bridge and full-bridge inversion modes, while the secondary side can switch between full-bridge, voltage doubler, and voltage quadruple rectifier modes. This invention reduces diode voltage stress, possesses self-balancing capability of the voltage doubler capacitor, and achieves soft switching across the entire voltage range. Ultra-wide voltage gain is achieved within a narrow frequency adjustment range across the entire voltage range through simple pulse frequency modulation (PFM), allowing the converter to adapt to the charging needs of new energy vehicles with different voltage platforms.

A charge-pump based low dropout (LDO) regulator is provided that overcomes latch-up issues. The LDO regulator is a high PSR low noise LDO regulator that uses a latch-up mitigated charge-pump voltage doubler which includes a N-type metal-oxide-semiconductor field-effect transistor (MOSFET), NMOS, pass transistor. This LDO regulator architecture may be used to provide a very low-noise supply regulated output voltage with high power supply rejection for an on-chip low jitter oscillator. Latch-up is mitigated using control circuitry and a power supply timing sequence. This scheme ensures that parasitic diodes associated with various transistors in the regulator are not forward biased.

The utility model discloses a miniature high-voltage module for a nuclear radiation detector. The miniature high-voltage module comprises a Boost chip circuit, a driving circuit and a voltage doubling rectifying circuit, the input end of the Boost chip circuit is connected with a power supply, the output end of the Boost chip circuit is connected with the driving circuit, and the Boost chip circuit is used for boosting the voltage input into the input end of the Boost chip circuit and outputting the boosted voltage to the driving circuit; the driving circuit is used for providing bidirectional current for the voltage doubling rectifying circuit based on the voltage output by the output end of the Boost chip circuit; and the voltage doubling rectifying circuit is used for amplifying the voltage output by the driving circuit and outputting a target voltage meeting the detection condition of the nuclear radiation detector. According to the module, the Boost chip circuit is adopted, the size of the miniature high-voltage module can be optimized, meanwhile, the miniature high-voltage module is additionally provided with the driving circuit, the requirement of some special detectors for large current is met, and the adaptation degree between the miniature high-voltage module and the nuclear radiation detector can be improved.

This disclosure describes systems, methods, and apparatuses for a power supply, the power supply configured for monitoring a voltage at an output end of the power supply; controlling, based on the voltage exceeding a first threshold, a first switch to connect a plurality of secondary windings of the power supply in series; and controlling, based on the voltage exceeding a second threshold, at least one other switch to switch in at least one capacitor into the power supply, wherein the second threshold is greater than the first threshold.

The utility model belongs to the technical field of X-ray sources, and discloses an X-ray source voltage-multiplying module encapsulation mold, which comprises a bottom sealing plate, side sealing plates, a copper column positioning mold and a channel embedding mold, a cavity with an upper opening is enclosed by the bottom sealing plate and the plurality of side sealing plates, and the cavity is used for injecting liquid epoxy resin to cure an epoxy resin block of a voltage-multiplying module; the copper column positioning die is arranged on one side sealing plate and is used for positioning and supporting a hollow copper column of the voltage-multiplying module; the channel embedded die is arranged on the bottom sealing plate and used for forming an internal channel of the voltage-multiplying module. According to the X-ray source voltage-multiplying module encapsulating mold, the epoxy resin block, the internal channel of the epoxy resin block and the pre-embedded hollow copper column can be integrally formed into the voltage-multiplying module, the forming difficulty of the voltage-multiplying module is reduced, various functional requirements are met, and the performance of an X-ray source is guaranteed.

The utility model belongs to the technical field of X-ray sources, and discloses an X-ray source insulation protection improved structure, an X-ray source comprises a ray tube, a voltage-multiplying module and a sealing cylinder, an anode electrically connected with the voltage-multiplying module is arranged on the ray tube, the sealing cylinder is sleeved outside the anode, two ends of the sealing cylinder are respectively and fixedly connected with the ray tube and the voltage-multiplying module, and the X-ray source insulation protection improved structure is arranged on the sealing cylinder. A glass shell is arranged outside the anode, a first end of the glass shell is in Kovar transition connection with a tube shell of the ray tube through a tube shell end, a second end of the glass shell is in Kovar transition connection with the anode through an anode end, an annular boss extending into the sealed space is arranged on the voltage-multiplying module, and the annular boss extends between the sealed cylinder and the anode end Kovar. And gaps are reserved between the annular boss and the sealing cylinder and between the annular boss and the anode end kovar. According to the X-ray source insulation protection improved structure, the insulation capacity between the sealing cylinder and the anode end kovar is enhanced through the annular boss, and the problem that the joint of the glass shell and the anode end kovar is prone to being broken down by high voltage is solved.

The invention discloses a miniaturized broadband rectifying circuit which comprises a blocking capacitor. The output end of the blocking capacitor is connected with the input end of the T-type impedance matching network, the output end of the T-type impedance matching network is connected with the input end of the voltage doubling rectifying structure, and the output end of the voltage doubling rectifying structure is connected with the input end of the filter capacitor and the input end of the direct current load. By adopting a voltage doubling rectifying structure, the output voltage amplitude of the rectifying circuit is improved, the impedance of the circuit is enabled to change more smoothly in a wider frequency band, and the broadband characteristic is favorably realized.

The invention discloses an energy collection and wake-up system of a low-power industrial RFID tag and a control method thereof, the energy collection and wake-up system comprises an energy collection module, an energy storage module, an energy management module, a wake-up control module and an RFID communication module, and the wake-up control module comprises a vibration sensor unit, a displacement sensor unit and a wake-up judgment unit. The energy management module comprises a bridge rectifier unit, a voltage doubling rectifier unit, a multi-path input change-over switch and an energy management chip. According to the invention, the cruising ability is obviously improved, the energy collection efficiency is high, the power consumption is low, the control is accurate, and the industrial adaptability is strong; an IMPINJMonzaR6 ultrahigh-frequency chip and an inverted-F-shaped antenna are adopted, the identification distance reaches 5-8 meters in an unshielded environment, the identification distance is far beyond that of a traditional passive tag (smaller than or equal to 3 meters), and the requirement for large-scale warehouse and long-distance material tracking is met.

The utility model relates to the technical field of negative-ion generators, and discloses a voltage-multiplying rectification type negative high voltage output circuit, which comprises a frequency voltage regulating circuit, a transformer circuit and a multi-stage voltage-multiplying rectification circuit, and is characterized in that a first end of the frequency voltage regulating circuit is connected with a first input end of the transformer circuit and inputs positive direct current voltage, and a second end of the frequency voltage regulating circuit is connected with a second input end of the transformer circuit; the second end of the frequency voltage regulating circuit is connected with the first end of the transformer circuit and the first end of the multi-stage voltage doubling rectifying circuit and inputs negative direct-current voltage; the third end and the fourth end of the frequency voltage regulating circuit are correspondingly connected with the second input end and the third input end of the transformer circuit respectively; the first output end and the second output end of the transformer circuit are correspondingly connected with the first end and the second end of the multi-stage voltage doubling rectifying circuit respectively. According to the utility model, the problems of output voltage drop and easy arc discharge damage after glue filling packaging are solved, and the circuit integration level and the safety are improved.

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 provides a portable direct-current high-voltage generator, which relates to the technical field of high-voltage test equipment and comprises a box body, a voltage-multiplying cylinder, a control host, a microammeter and a cable are arranged in the box body, a base is mounted at the lower end of the voltage-multiplying cylinder in a sliding manner, a plurality of guide holes are uniformly distributed in the side wall of the base, and a plurality of supporting legs are mounted on the base in a sliding manner. A guide block is fixedly installed at one end of each supporting leg, a through groove is formed in each guide block, the other end of each supporting leg penetrates through the corresponding guide hole and extends out of the base, a compression spring is arranged between each guide block and the inner wall of the base, and a push rod is fixedly installed at the bottom of the pressure-multiplying cylinder. According to the pressure-multiplying barrel, the supporting legs can automatically stretch out of the base through the gravity of the pressure-multiplying barrel and the matching of the guide rollers and the guide grooves, the pressure-multiplying barrel can be rapidly and stably placed, and the supporting legs can be automatically folded through the arrangement of the compression springs.

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.

The utility model discloses a screen drive circuit of large current, including boost circuit, voltage doubler circuit and two voltage stabilizing circuit, input voltage first to boost voltage, then send into voltage doubler circuit and carry out voltage doubling, then output after voltage stabilizing circuit voltage stabilizing, two voltage stabilizing circuits are first voltage stabilizing circuit and second voltage stabilizing circuit respectively, realized multichannel voltage output under low cost, realize output voltage stabilization through increasing voltage reference chip and MOS pipe, and output current can reach 10mA.

This invention relates to a symmetrical voltage doubler type high-gain DC-DC boost converter, belonging to the technical field of power electronic converters. It solves the problem that traditional symmetrical converters cannot simultaneously achieve simple circuit structure, high boost capability, and electromagnetic interference immunity. This invention combines capacitors, diodes, and coupled inductors in a specific connection method of symmetrical interleaved parallel connection and magnetic integration to form an integrated, miniaturized high-gain conversion unit, balancing structural simplification and performance optimization. This invention is primarily applied in DC power conversion applications with high boost ratios.

The utility model provides a voltage-doubling and current-doubling rectifying circuit of an asymmetric half-bridge AC-DC single-stage converter, relates to an isolation type single-stage PFC technology in the field of power electronics / power conversion, and aims to realize power factor correction and stabilize direct current output. The device comprises a rectifier bridge, an asymmetric half bridge, a transformer, a rectifier circuit, an inductor La and capacitors Cb and Co, wherein the rectifier circuit adopts an innovative voltage-doubling rectifier topology or current-doubling rectifier topology; the voltage source comprises diodes D1 and D2, inductors Lo1 and Lo2 and capacitors C3 and C4, the voltage stresses of the diodes and the inductors are halved and balanced, and the current ripple is small; and the secondary winding comprises diodes D1 and D2 and inductors Lo1 and Lo2, and the current stress of the diodes, the inductors and the secondary winding is halved, so that the loss can be reduced. The converter belongs to double-end conversion and can transmit high power; asymmetric complementary PWM control is adopted, and ZVS soft switching is achieved. The system is simple in topology, easy to control, low in cost and high in efficiency.

The invention discloses a voltage-multiplying driving circuit of a bistable pulse valve and a control method of the voltage-multiplying driving circuit. The voltage-multiplying driving circuit comprises a control module, a battery input module, a capacitance voltage-multiplying module and a pulse driving module, the capacitor voltage-multiplying module comprises a capacitor C1, a capacitor C2, a diode D1, a switching tube V1 and a switching tube V2, the switching tube V1 controls whether the capacitor C2 is charged or not, and the switching tube V2 controls whether the capacitor C1 and the capacitor C2 are connected in series or not; the battery input module is connected with the input end of the capacitor voltage-multiplying module; the pulse driving module is connected with the output end of the capacitance voltage-multiplying module; and the control module controls the on-off of the switching tube V1 and the switching tube V2. According to the invention, the bistable pulse valve can be driven to be switched under a relatively low power supply voltage, and meanwhile, the circuit has the advantage of low standby power consumption.

The application provides an LLC converter and a wide-range voltage regulation method thereof. The LLC converter comprises an input voltage, an input inductor L in , a first half-bridge unit, a second half-bridge unit, a resonant cavity, a transformer, a rectifier circuit, an output capacitor and an output load. The first half-bridge unit is composed of a first switch S1, a second switch S2 and a bus capacitor C1, the second half-bridge unit is composed of a third switch S3, a fourth switch S4 and a bus capacitor C2, the resonant cavity is composed of a resonant capacitor C r , a resonant inductor L r and an excitation inductor L m , and the rectifier circuit is composed of a first rectifier diode D1, a second rectifier diode D2, a voltage doubler capacitor C3 and a voltage doubler capacitor C4. The application can realize soft switching of all power devices in a wide voltage gain range, the switching frequency is fixed at a series resonant frequency, which is beneficial to optimization and design of magnetic elements, and the capacitor voltage of the half-bridge unit in the LLC converter can be self-balanced.

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.

The utility model relates to the technical field of direct current high voltage generator discloses a direct current high voltage generator with protection structure, including generator, the inside of generator is provided with foam board, the inside of foam board is provided with voltage doubler, the surface of voltage doubler is provided with support subassembly, the surface fixed connection of voltage doubler has limit ring, the support subassembly includes fixed block. The utility model discloses through setting up support subassembly, specifically is along voltage doubler with the slide of mounting block downward, makes the movable plate in the inner wall of mounting block and hinged seat and rotates, makes hinged seat expand to the outside, simultaneously promotes the rotation of support plate in the inner wall of fixed block, makes support plate expand outward, then rotates fixed baseplate and adjusts the angle, through three fixed baseplate and ground contact, increase the contact area to improve the stability of voltage doubler when placing, avoid the damage of voltage doubler toppling from accidental collision, and further improve the protection effect when using.

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.