648 results about "Voltage generator" patented technology

The invention relates to a device and a method for preparing nanofiber core-spun yarn through batch coaxial electrostatic spinning. The device comprises a needleless dish-shaped spray head, an air blowing auxiliary device, a liquid supply device, an annular twisting device, a high-pressure generator, a negative-pressure air suction device, a winding device and an unwinding device. The core yarn penetrates through the axis of the needleless dish-shaped nozzle, the nanofiber generated by the needleless dish-shaped nozzle coaxially wraps the surface of the core yarn through the whole spinning device, and batch preparation can be achieved. The device is further provided with an air blowing auxiliary device and a negative pressure air suction device, under the air blowing effect of an air blowing nozzle and the adsorption effect of a negative pressure air suction shell, airflow force can be generated to promote jet flow to be further stretched in a straightened mode, under the common influence of electric field force and the airflow force, the jet flow is fully stretched, bending is reduced, and the service life of the jet flow is prolonged. Therefore, the nanofiber bundles can continuously cover the surface of the core yarn in a high-orientation state under the traction of the annular twisting device, and the continuous nanofiber core-spun yarn is formed.

The invention belongs to the field of storage, and discloses a high-energy-efficiency mixed-precision charge domain in-storage computing architecture and a working method thereof. Comprising a single-slope analog-to-digital converter, a sparsity perception input alignment module, a multi-bit input accumulation module, a controller and an accumulation module, wherein the single-slope analog-to-digital converter consists of an index calculation array, a mantissa calculation array, a shared ramp voltage generator and a bidirectional counter. According to the invention, serial input binary coding based on capacitor voltage is suitable for floating point and integer multiply-accumulate operation with flexible bit width; according to the invention, a shared single-slope analog-to-digital converter (SS-ADC) is introduced to realize maximum index search and index difference calculation; according to the method, a sparsity perception calculation scheme is provided, low-importance input-weight pairs are filtered out through an adjustable threshold value, and invalid power consumption is reduced; according to the method, a multi-bit input accumulation method is further combined, and an ADC redundancy optimization quantization and normalization process is utilized, so that the overall energy efficiency is improved.

A voltage generator including an LDO (low dropout) regulator that supplies a current to an internal voltage node of a sense amplification circuit as feedback control based on a voltage level of the internal voltage node; and a power switch circuit including a plurality of power switches each having one end connected to an external voltage and an opposite end connected to the internal voltage node, and that supplies the current to the internal voltage node as feed-forward control based on a known number of sense amplifiers to be activated. The voltage generator may efficiently supply current according to an operation mode of the sense amplification circuit.

The invention discloses a vehicle-mounted high-power power supply and distribution system and method, and the method comprises the steps: enabling one end of an engine to be provided with a transmission wheel train and a high-voltage generator during the running process of a vehicle, and enabling the output rotating speed of the engine to be improved to the rated rotating speed of the high-voltage generator through the transmission wheel train; high-voltage direct current output by the generator drives a high-voltage electric appliance to work after being subjected to voltage stabilization and filtering by the high-voltage distribution box; when an automobile is parked and a mains supply is used, alternating-current mains supply is inverted into direct-current power through the high-voltage distribution box to drive a high-voltage electric appliance to work. The defects that a traditional vehicle cannot run and cannot supply power in a high-power mode under the parking condition can be overcome, especially the technical problem of power supply under the parking condition is solved, software system adaptation development is carried out through the comprehensive technical scheme of a high-power high-voltage silicon generator, mains supply inversion, power supply filtering and the like in combination with post-stage power utilization characteristics, and the power supply efficiency is improved. And stable power supply of the air-conditioning system under running and parking conditions is ensured.

The invention relates to a passive wireless temperature sensor circuit, which comprises a transceiving antenna, an RF-DC rectifier circuit, a temperature sensing circuit and a backscatter circuit, the RF-DC rectifier circuit receives external radio frequency energy based on the transmit-receive antenna and then outputs direct current for power supply. The temperature sensing circuit comprises a complementary absolute temperature voltage generator and a ring oscillator; the complementary absolute temperature voltage generator comprises an MOS tube and generates CTAT voltage based on temperature characteristics of the MOS tube. The ring oscillator converts the CTAT voltage into an oscillation frequency signal of the ring oscillator and then outputs a square wave frequency signal with a negative temperature coefficient; the backscattering circuit backscatters the square wave frequency signal through the transceiving antenna; the CTAT key generation circuit built by the MOS tube generates CTAT voltage, a temperature frequency conversion chain is built through the CTAT voltage and the ring oscillator, temperature information is converted into frequency information of the oscillator, the power consumption of the temperature sensing circuit can be effectively reduced, and meanwhile the voltage coefficient of the CTAT voltage is increased by combining the temperature characteristic of the MOS tube.

The invention discloses a medium-voltage generator car power protection method and system based on power distribution automation graph model positioning access point, and the method comprises the steps: obtaining power distribution network automation graph model data, carrying out the processing of the data, obtaining the processed data, and building a power distribution network automation graph model database according to the processed data, acquiring real-time operation data and historical load data from the power distribution network automation graph model database, performing feature extraction on the real-time operation data and the historical load data, analyzing the extracted features, and predicting the load of each region of the power distribution network in a future time period by adopting a trained load prediction model to obtain a prediction result; and searching and determining a plurality of candidate access points in the power distribution network automation graph model, screening out an optimal access point from the plurality of candidate access points, and sending the information of the optimal access point to the medium-voltage power generation vehicle access control module. According to the method, the medium-voltage generator car can be quickly, accurately and efficiently connected to the power distribution network for power protection, and the reliability and stability of power supply are improved.

The invention provides a compact high-voltage generator with excellent heat dissipation performance, belongs to the technical field of high-voltage generators, and solves the technical problems that an existing generator is complex in structure, poor in heat dissipation performance and the like. Comprising a water-cooled generator shell, a rear end cover piece is arranged at the rear end of the water-cooled generator shell, a linkage heat dissipation end assembly is arranged at the front end of the water-cooled generator shell, a stator assembly is arranged between the rear end cover piece and the linkage heat dissipation end assembly, and a rotor shaft is rotationally arranged in the stator assembly; a rotor shaft is arranged in the water-cooled generator shell, the two ends of the rotor shaft are rotationally arranged between the rear end cover piece and the linkage heat dissipation end assembly respectively, a plurality of rotor assemblies are arranged on the rotor shaft and distributed in the stator assembly, an electric control box is arranged above the water-cooled generator shell, and a mounting base is arranged below the water-cooled generator shell. The heat dissipation device is provided with a water-cooling main heat dissipation system and an air-cooling auxiliary heat dissipation system, and the heat dissipation effect is good; and deep integration and modular structure are realized, the size is obviously reduced, the operation is stable, and the maintenance cost is reduced.

The invention discloses a portable lightning arrester performance detection device and a use method thereof, and relates to the field of lightning arrester detection. The portable lightning arrester performance detection device comprises a direct-current high-voltage generator and a box cover arranged on the direct-current high-voltage generator, a flat cable is arranged between the direct-current high-voltage generator and the box cover, two test main lines are embedded in the flat cable, a placement cavity is formed in the box cover, and the test main lines are arranged in the placement cavity. And a plurality of contact type power connection seats are arranged in the placement cavity in parallel based on the test main line, and each contact type power connection seat can be used for placing the lightning arrester main body and is electrically connected with the lightning arrester main body in a contact manner. According to the portable lightning arrester performance detection device, the multi-station parallel contact type power connection seat is arranged in the placement cavity of the box cover, the test branch line is connected with the test main line, a plurality of lightning arrester main bodies can be placed at the same time, a single detection loop is independently controlled through the change-over switch, and batch detection and station switching are achieved.

Provided is a display driving circuit, including at least one processor configured to generate a first gamma code corresponding to a first mode among a plurality of modes, a gamma voltage generator configured to generate a plurality of gamma voltages with respect to the first mode, a data driver configured to generate data signal corresponding to the first gamma code based on the first gamma code and the plurality of gamma voltages, and generate a first level data corresponding to a minimum gamma voltage among the plurality of gamma voltages based on the data signal, and a gamma control logic circuit configured to generate a gamma voltage control signal for controlling the gamma voltage generator based on the first level data.

A down-sampling function folds the thermal noise into a lower frequency band. A capacitor samples a voltage during a period of bus inactivity and supplies the sampled voltage to an input of operational amplifier in a loop filter of a phase-locked loop when the bus is active. The sampling frequency determines the reduction in thermal noise that can be achieved. The PLL generates a clock signal for a bus. A voltage generator charges the capacitor through a transistor when the bus is inactive. The transistor turns on responsive to the bus being inactive to allow the capacitor to charge and the transistor turns off responsive to the bus being active to isolate the capacitor and operational amplifier from the voltage generator. When the bus is active, the voltage across the capacitor is supplied to the operational amplifier.

A charge pump control circuit, comprising an internal reference voltage generator configured to generate a programmable reference voltage ramp, and a control circuit coupled to the internal reference voltage generator. The control circuit configured to control current of a charge pump circuit driving a load by controlling a duty cycle of a transfer phase of the charge pump circuit during a gain-up stage according to a first comparison between the programmable reference voltage ramp and an output voltage across an output capacitor of the charge pump circuit, and a second comparison between a fly capacitor reference voltage and a fly capacitor voltage of a fly capacitor of the charge pump circuit.

Disclosed herein are a method of controlling a bipolar high-voltage generator and an X-ray system. The bipolar high-voltage generator is connected to a load for supplying a cathode voltage and an anode voltage to the load. The bipolar high-voltage generator includes a first transformer and a second transformer. The first transformer is provided in an output circuit of the anode voltage, and the second transformer is provided in an output circuit of the cathode voltage. The method of controlling includes: obtaining a target voltage difference of the bipolar high-voltage generator, wherein the target voltage difference is within a preset range; and adjusting a working state of at least one of the first transformer and the second transformer based on the target voltage difference. The target voltage difference is defined as a difference between an absolute value of a target anode voltage and an absolute value of a target cathode voltage output from the bipolar high-voltage generator.

A display device includes a display panel including pixels, and a data driver configured to generate a data voltage based on image data. The data driver includes a mode determiner configured to generate mode data about driving of the display panel, a gamma generator configured to generate an analog gamma voltage and a digital gamma voltage based on the mode data, and a data voltage generator configured to generate a data voltage based on the analog gamma voltage and the digital gamma voltage.

A device in a chamber is provided. The device comprises at least one die. The at least one die comprise a first voltage generator, a dielectric layer and a first voltage regulator circuit. The first voltage generator is charged to have a first induced voltage by induced charges generated in response to a first voltage of a first electrode of a chuck in the chamber. The dielectric layer surrounds the first voltage generator to isolate the first voltage generator from the first electrode. The first voltage regulator circuit is coupled to the first voltage generator to receive the first induced voltage and generates a first power supply voltage according to the first induced voltage for a first circuit in the device.

The invention provides a special static electricity removing device matched with a twisting machine, a working method and an installation method of the special static electricity removing device. The special static electricity removing device comprises an arc-shaped static electricity removing device body, a dustproof flange arranged on the outer edge of the body, a plurality of electrode tungsten needles distributed on the body, an integrated circuit board and a high-voltage pack. The device adopts a low-voltage power supply to supply power, adopts a highly integrated circuit board to replace a traditional high-voltage generator and a switch, cancels a high-voltage line, simplifies a line structure, compresses a traditional device assembly into a few core components, reduces the manufacturing cost, improves the reliability and safety of equipment, eliminates potential safety hazards of a high-voltage line, and improves the reliability and safety of the equipment. Production safety is guaranteed, high-quality yarn guarantee is provided for subsequent weaving, dyeing and finishing and other procedures, the core problems of complex installation, poor effect, potential safety hazards and the like in the prior art are solved, and an efficient, safe and economical static elimination solution is provided for the textile industry.

A display device includes a display panel including a plurality of pixels, a data driver applying a data signal to the display panel, a scan driver including a plurality of scan driving stages and sequentially applying a scan signal to the display panel, a light emitting driver including a light emitting driving stage and sequentially applying a light emitting signal to the display panel, a controller controlling the scan driver, the light emitting driver, and the data driver, and a power voltage generator generating a power voltage including a high voltage and a low voltage and providing the high voltage of different sizes or the low voltage of different sizes to at least one of the plurality of scan driving stages and the light emitting driving stage. At this time, the power voltage generator generates a first high voltage, a first low voltage, a second high voltage smaller than the first high voltage, and a second low voltage greater than the first low voltage based on an input voltage.

The invention discloses an alternating-current dynamic power source, which belongs to the field of power sources, and comprises the following steps: a main controller controls a JAWS quantum voltage generator unit to emit a first alternating-current voltage and a second alternating-current voltage according to an output parameter and a time-frequency reference source; the voltage adjusting device carries out voltage conversion processing on the first AC voltage to obtain a first test AC voltage; the current converter performs current conversion processing on the second AC voltage to obtain a second test AC voltage; the voltage acquisition unit calculates a first differential voltage value according to the first AC voltage and the first test AC voltage, and calculates a second differential voltage value according to the second AC voltage and the second test AC voltage; and the main controller calculates the compensation active electric energy according to the first differential voltage value and the second differential voltage value, and compensates the theoretical active electric energy according to the compensation active electric energy to obtain the actual active electric energy. Therefore, by implementing the method, the problem that the electric energy traceability requirement of any wave dynamic load cannot be met in the prior art can be solved.

A ferroelectric memory device includes: a ferroelectric memory cell connected between a bit line and a plate line and controlled by a word line; a row decoder configured to activate the word line; a board line voltage generator configured to provide a ground voltage to the board line during a pre-charge period and provide a first voltage to the board line in response to activation of the word line; and a sense amplifier configured to amplify a voltage of the bit line to a second voltage higher than the first voltage during a sensing operation.

A memory device may be provided herein. The memory device may comprise a memory block configured to include a first select line, word lines, a second select line, a channel layer, first select transistors, second select transistors, and memory cells; a voltage generator configured to produce a turn-on voltage and a turn-off voltage applied to the first and second select lines, and to produce a programming voltage and a pass voltage applied to the word lines; a source line driver configured to produce a pre-charge voltage applied to the source line; and a side buffer group configured to apply a programming enable voltage and a programming lock voltage to bit lines.and a control circuit designed to determine a reference position and to control the voltage generator, source line driver, and side buffer group to adjust the time required to preload the channel layer.

The utility model discloses a ray tolerance testing device which is used for testing the maximum tolerance time of a switching tube under a fixed ray irradiation condition. The device comprises a ray protection chamber, and a high voltage generator, a ray tube, a source meter, a timer, a first switch, a liftable objective table, a probe seat and a receiver which are located in the ray protection chamber, and a monitoring terminal located outside the ray protection chamber, the output end of the high-voltage generator is electrically connected with the ray tube; the liftable objective table and the receiver are sequentially arranged along the emission direction of the ray tube; the liftable objective table is used for bearing the probe seat and the tested switch tube; a probe on the probe seat is electrically connected with the source meter and an electrode of the tested switch tube; the first switch is connected in series with a power bus; the power bus is electrically connected with the power ends of the high-voltage generator, the source meter and the timer; the control ends of the first switch and the liftable objective table and the communication ends of the receiver, the high voltage generator, the source meter and the timer are all electrically connected with the monitoring terminal.

The present disclosure describes embodiments of a temperature sensor with full band PSR. The temperature sensor can include a reference voltage generator, a temperature circuit, and an analog-to-digital converter (ADC). The reference voltage generator is configured to generate a reference voltage. The temperature circuit is configured to operate under a substantially constant bias current and to generate a temperature signal proportional to temperature. The ADC is electrically coupled to the reference voltage generator and the temperature circuit and configured to convert the temperature signal to a digital representation based on a sampling frequency. The ADC comprises a frequency generator configured to generate a modulation frequency having a random variation. The sampling frequency is modulated by the modulation frequency.

The invention provides a bulb tube current feedback and synchronous irradiation control system in a blood irradiator, and belongs to the technical field of medical irradiation equipment. Comprising a current acquisition module used for processing target blood by a target blood irradiator and outputting a current signal, a signal conditioning module used for carrying out filtering, level conversion and electromagnetic noise suppression processing on the output current signal, and a current control module. An STM32 microcontroller adopts an incremental proportional control algorithm to dynamically adjust output gain of a high-voltage generator, a synchronous irradiation control module, generation of a synchronous control signal and operation of a management module, a target blood irradiator is controlled to enter a low-power-consumption mode in a non-irradiation stage, and the current of a bulb tube is collected in real time and is processed, so that the current of the high-voltage generator is obtained. High precision and stability of the current signal are ensured, a synchronous control signal is generated according to the current signal after signal conditioning and the irradiation process state, and coordination control of sample rotation and radiation output is realized.

The utility model discloses an electronic defense pet strap, which relates to the technical field of pet appliances and comprises a wearing main body, the protector is arranged on the wearing main body; the wireless pulse high-voltage generator assembly is arranged on the wearing main body and is used for providing electric energy for the protector; an inverter is utilized to instantly release pulse voltage, high voltage is conducted to conductive electrodes distributed on the surfaces of important parts of a pet body through a power line, after the conductive electrodes receive the pulse voltage, a discharge area is formed on the surface of a protection part, and before or when the pet is attacked, a pet owner can press a remote controller to prevent the pet from being attacked. A protection electric field is formed on the protector and the wearing main body, so that an attacker is repelled.

A control circuit for an audio amplifier includes a reference voltage generator and a voltage limiter. The reference voltage generator generates a first reference voltage and a second reference voltage based on a supply voltage of the audio amplifier. The voltage limiter receives an audio input signal, the first reference voltage, and the second reference voltage, and generates an adjusted audio signal based on the audio input signal, the first reference voltage, and the second reference voltage. When a voltage level of the audio input signal is higher than the first reference voltage, the adjusted audio signal is limited to the first reference voltage, and when the voltage level of the audio input signal is lower than the second reference voltage, the audio input signal is limited to the second reference voltage. The input voltage limiter is used to generate a truncated input signal proportional to the desired output signal when clipping occurs. This prevents the control loop from being affected by inaccurate feedback information and enables faster transient response and less distortion.

Disclosed are a bootstrap control circuit and a voltage converting device. The bootstrap control circuit includes a current mirror, a diode string, a switch, a control voltage generator and a first transistor. The current mirror, based on an input voltage, mirrors a bias current to generate a mirror current. The diode string is coupled between the current mirror and a reference voltage end. The switch has a first end coupled to the diode string, a control end of the switch receives a first control voltage, a second end of the switch provides a second control voltage. The first transistor, based on the input voltage, generates an output voltage according to the second control voltage.

A display device and an electronic device including the same are disclosed. The display device includes: a display panel including sub-pixels connected to first sub-gate lines and second sub-gate lines; a gate driver configured to supply a first sub-gate signal to the sub-pixel through the first sub-gate line and a second sub-gate signal to the sub-pixel through the second sub-gate line during a display scan period; and a voltage generator configured to supply an offset signal to the first sub-gate line during a self-scanning period in which the supply of the second sub-gate signal is stopped.

A power supply switch circuit includes a first switch configured to supply a first power supply voltage to a power supply terminal of a power amplifier, a control voltage generator configured to compare a first voltage of the power supply terminal with a predetermined first reference voltage to generate a first control voltage higher than the first power supply voltage, and a switch controller configured to use the first control voltage to generate a switching driving signal controlling the first switch.

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.

The invention relates to the technical field of medical equipment, and particularly discloses a pulsed electric field ablation system which comprises a high-voltage generator module, a boosting main circuit module, a low-voltage control module, a signal isolation module and a protection circuit module. The output end of the high-voltage generator module is connected with the input end of the boost main circuit module, and provides stable direct-current voltage for the boost main circuit module; the low-voltage control module is connected with the boost main circuit module through the signal isolation module to realize voltage regulation control on the boost main circuit module; the protection circuit module is respectively connected with the boost main circuit module and the high voltage generator module, and is used for monitoring the circuit state and triggering the protection action. High-low voltage electrical isolation is realized by adopting the signal isolation module, high-voltage interference is avoided, stable work of the low-voltage control circuit is guaranteed, and the voltage output precision is improved.

The invention relates to a system for the sequential treatment of a body surface with cold atmospheric-pressure plasma and negative-pressure therapy or negative-pressure flushing therapy. The system comprises the following components: - a flexible, substantially gas-tight cover (12) for forming a closed volume (14) over the body surface (10), - an open, nonwoven or sponge-like spacer structure (16) within the volume (14), the spacer structure being compressible under negative pressure and self-restoring in the absence of negative pressure, - at least one planar plasma applicator (20) which is arranged within the volume or gas-tightly covers an opening formed in the cover (12) and acts on the volume, - a high-voltage generator (22) connected to the plasma applicator (20) for supplying the plasma applicator (20) with an operating voltage; - at least one port (18) having a lumen (18.1) for liquid instillation and / or for aspirating gases and liquids from the volume; and - a suction pump (40) connected to the lumen (18.1) for aspirating gases and liquids from the volume.