16 results about "Farad" patented technology

The utility model discloses a multi-string farad capacitor current-limiting charging circuit, a collector electrode of an NPN triode is electrically connected to an enabling pin of a control chip, a collector electrode of a PNP triode is electrically connected to an output pin of the control chip, and a current-limiting protection resistor is connected between a base electrode of the NPN triode and the collector electrode of the PNP triode; the PNP triode is also electrically connected to the positive electrode of a diode through a voltage division protection resistor. The diode and a multi-string farad capacitor circuit are connected to a VFC circuit. According to the current-limiting charging circuit, an engineer can conveniently adjust and design the circuit according to the characteristics and string number of the farad capacitor; the device has an element protection function which is not provided by the traditional current-limiting current, and the applied elements are simple; an EN signal of a pre-stage power supply circuit is turned off, electric energy is saved after the farad capacitor is fully charged, and automatic recharging can be performed when the voltage of the farad capacitor is low; the circuit can be directly used through production verification, and the project development process is accelerated.

The utility model discloses a power supply equalization circuit for a communication module, and relates to the field of power supply of communication modules. The device comprises a conversion module. The standby power pack comprises a power module and a plurality of farad capacitors which are sequentially connected in series; the power supply module and the conversion module are connected to an external power supply; the conversion module is used for converting an external power supply into a voltage with a preset amplitude and inputting the voltage into the communication module; the power supply module is used for outputting a stable constant-current power supply and charging each farad capacitor with the constant-current power supply during the input period of an external power supply; the Farad capacitors are further used for providing a standby power supply for the communication module through the power supply module and the conversion module in sequence when the external power supply is cut off, the communication function is safely kept within at least a certain period of time after power failure through the Farad capacitors which are connected in series in sequence, key information can be ensured to be uploaded to a server, and the service life of the server is prolonged. And data loss is effectively prevented.

The utility model discloses a farad capacitor protection circuit, a control module and electronic equipment, relates to the technical field of electronics, is used for the control module adopting a time-sharing power-on anti-latch control mechanism, and comprises a first control switch, a second control switch and a voltage reference unit, a first end of the first control switch is connected with a positive electrode of a farad capacitor, a second end of the first control switch is connected with an internal main power supply end, and the internal main power supply end is connected with the control module; the input end of the second control switch is connected with the internal main power supply end, and the output end of the second control switch is connected with the control end of the first control switch; the voltage reference unit is connected with the control end of the second control switch and the internal main power supply end, and is used for controlling the connection state of the second control switch based on the voltage of the internal main power supply end. Therefore, the problem of abnormal oscillation circulation can be avoided, and the service life of the farad capacitor is prolonged.

1. The name of the design product: Faraday capacitor spot welder. 2. The use of the design product: for welding. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a power failure protection system for a small AI cloud server, and relates to the technical field of direct-current power supply electronic equipment. A direct-current power supply input module in the system is connected with an external direct-current power supply; the system power supply module supplies power to the AI cloud server; the charging power supply generation module converts an input voltage into a stable voltage for charging; the farad capacitor charging and discharging module stores electric energy; when the full charge monitoring module monitors that the farad capacitor charging and discharging module is fully charged, a full charge signal is output; the power-down monitoring module outputs a power-down signal when monitoring that the external direct-current power supply is powered down; the CPU responds to the full electric signal and controls the charging power supply generation module to stop outputting; and responding to the power failure signal, executing a data protection process, controlling the standby power switch module to be switched on, and switching to the farad capacitor charging and discharging module to supply power to the AI cloud server, so that rapid seamless power switching and reliable data protection of the small AI cloud server during power failure are realized, the cost is low, and the reliability is high.

The invention provides a test fixture, system and method of a module with a system power failure reporting function. The test fixture comprises a main control module, a power supply module, a current detection module, a voltage detection module, an interface module and a butt joint module. The VIN port, the VSCAP port, the first DC port and the second DC port of the interface module are correspondingly connected with the VIN output, the farad capacitor, the boost output and the buck output of the tested module respectively; a first output of the power supply module is connected with the main control module and the current detection module, a second output of the power supply module is connected with VSCAP ports of the main control module and the interface module, and a third output of the power supply module is connected with VIN ports of the main control module, the current detection module and the interface module; the current detection module is connected with the main control module; one end of the voltage detection module is connected with the main control module, and the other end of the voltage detection module is connected with the VSCAP port, the first DC port and the second DC port of the interface module. And the mass production test efficiency is greatly improved, and meanwhile, abnormal components can be screened out.

This disclosure provides systems, methods and apparatuses for adaptive capacitive modulation. A Power Receiver can support power reception at a variety of power levels, such as 5 watts (5W), 15W, or 25W, among other examples. The Power Receiver can select, from among a plurality of modulators having different capacitance levels, which modulator to use for communication with the Power Transmitter. In some aspects, selection of a modulator is based on an estimated induction coupling factor (Kest) and power level. In instances where coupling is high, a first modulator (e.g., having 4.7 nano-farads (nF) capacitance) is used for low power levels (e.g., 5W) and a second modulator (e.g., having 10 nF to 22 nF) is used for high power levels (e.g., 25 W). The Power Receiver can select the modulator capacitance such that the Power Transmitter avoids capacitive region operation and has sufficient amplitude shift keying (ASK) depth for effective communication.

This invention relates to the field of circuit testing technology and discloses a rapid polarity tester for current transformers with simultaneous multi-winding testing. A power supply is connected to a voltage conversion module, which in turn is connected to an energy storage capacitor module. The energy storage capacitor module includes a farad capacitor, the positive terminal of which is connected to the positive terminal of the primary test via a trigger switch and a primary current adjustment module. A multi-channel secondary-side sensing display module consists of a first current detection circuit, a second current detection circuit, and a third current detection circuit, respectively connected to a first pointer-type milliammeter, a second pointer-type milliammeter, and a third pointer-type milliammeter. The farad capacitor releases a pulse current to the primary side of the current transformer under test, and the multi-channel secondary-side sensing display module captures the induced current in parallel and drives the pointer deflection. The internal circuitry is encased in a metal shielding shell made of aluminum-magnesium alloy. This invention achieves simultaneous polarity verification of multiple secondary windings, improving testing efficiency and suppressing electromagnetic interference.

The invention discloses a low-inductance large-current winding type super capacitor electrode structure and a preparation method thereof, and belongs to the technical field of super capacitors. The capacitor comprises a positive electrode unit, a negative electrode unit and a porous diaphragm which are overlapped and then wound in a staggered manner to form a capacitor core body; the positive / negative electrode unit adopts an insulating base film single-sided vacuum evaporation ultrathin metal current collector, the back surface of the base film is synchronously evaporated with a discontinuous aluminum metal grid stress compensation layer in the same furnace, the surface of the current collector is coated with an active carbon / graphite composite active layer, the active layer adopts a three-sided closed-loop U-shaped PI insulating edge sealing design, and only a single end is controllably exposed; after winding, only the edges of the single-pole current collector and the active layer are exposed out of the two end surfaces of the core body respectively, and a whole-surface current collecting electrode is formed through zinc-tin alloy spraying on the end surfaces; and meanwhile, a modularized linear scaling full-capacity section preparation process is provided in a matched manner. Through the collaborative innovation of the structure and the process, the ultra-large-capacity high-current pulse sensor can be compatible with all-scene application of millifarad-level miniature to ten thousand-level ultra-large capacity, ultralow internal resistance, ultralow parasitic inductance, high volume utilization rate and high mass production yield are achieved, and the ultra-large-current pulse sensor is perfectly adapted to a large-current pulse scene from an internet-of-things sensor to electromagnetic ejection; and all the preparation processes are completely adaptive to the existing domestic mature production line, low-cost mass production can be realized, and long-term stable technical protection is provided for full-scene application of the super capacitor.

The utility model discloses a novel electric energy meter or collection terminal is with intelligent charging circuit, including voltage reducing module U4 and load VCAP, voltage reducing module U4 is provided with input terminal pin VIN, output terminal pin SW and feedback terminal pin FB, output terminal pin SW electric connection has energy storage inductance L5, energy storage inductance L5 is connected with access point VCC through the conducting wire, energy storage inductance L5 and access point VCC between have filter capacitor C30, filter capacitor C16 and filter capacitor EC8 in proper order, be provided with diode D25 between charging resistance and load VCAP. The utility model is provided with triode Q5, forms the clamping circuit through, and utilizes the VEB constant voltage difference of triode when power on, makes U4 output voltage be clamped and always exist fixed voltage difference with farad capacitor, and the power supply circuit is protected in the power-on instant, prevents charging current overload, guarantees the stable reliable normal operation of product, reduces the instantaneous impact to power grid simultaneously, makes the product effectively restrain the interference or influence to power grid.

To provide a farad supercapacitor starting power supply with a battery charging function, which realizes the dual functions of emergency starting and battery charging, and when the starting power supply is insufficient to start a vehicle urgently in an extreme usage scenario, the battery can be charged by connecting to a mobile power bank, and the vehicle can be started after the battery recovers a certain amount of power. [Solution] The farad supercapacitor starting power supply with battery charging function comprises a starting power supply housing, a farad supercapacitor pack arranged in the starting power supply housing, a main control circuit board, and an alligator clip output interface. The main control circuit board further comprises a USB-C charging port, a switching circuit, and an MCU control circuit. When the USB-C charging port is connected to an external charging source and the alligator clip output interface is connected to a vehicle battery that is short of power, the main control circuit board controls the switching circuit to guide the charging current from the external charging source to the vehicle battery to charge the vehicle battery.

The utility model provides an automatic charging device for an elevator cage, and belongs to the electromechanical field. Comprising a rolling cage shoe, a first transmission wheel, a second transmission wheel, a third transmission wheel, a connecting shaft, a transmission belt, a generator, a rectification voltage stabilizer, a farad capacitor, a PLC control box and direct current contactors KM1 and KM2. The first transmission wheel and the second transmission wheel are fixed to the two ends of the connecting shaft, the first transmission wheel is installed on the rolling cage shoe, the second transmission wheel is connected with the third transmission wheel through a transmission belt, the third transmission wheel is connected with the generator, the output end of the generator is connected with the input end of the rectification voltage stabilizer, and the output end of the rectification voltage stabilizer is connected to the farad capacitor. A positive terminal and a negative terminal of the farad capacitor are connected with the direct-current contactor KM1, the direct-current contactor KM2 is connected with an output power source of a wellhead wireless charging device, and the PLC control box is connected with the direct-current contactor KM1 and the direct-current contactor KM2. According to the utility model, the PLC control box controls the wireless charging device and the automatic charging device to charge the storage battery in turn, so that the storage battery can always work normally.

A package is described. The package includes a die covered by a lid. The lid maintains a hermetic seal for the die. The package includes high frequency shunt capacitance in parallel with surface-mount capacitors. The high frequency shunt capacitance is formed by interdigital capacitors below the surface-mount capacitors. The interdigital capacitors, the surface-mount capacitors, and the die form a circuit which produces a stable output voltage. The output voltage may remain stable even when subject to noise due to energized particles in space. The package includes solder resist with openings for attaching the surface-mount capacitors to the interdigital capacitors. Advantageously, the interdigital capacitors may achieve high frequency shunt capacitance on the order of nano-farads as part of the frame geometry with minimal increase in package height.

The invention relates to the technical field of intelligent electric energy meter power supplies, in particular to a load switch driving system and method based on an intelligent electric energy meter linear power supply. A linear power supply module isolates, reduces, rectifies and filters alternating-current voltage and outputs first direct-current voltage, and the first direct-current voltage passes through a DC-DC voltage reduction module to obtain second direct-current voltage; the second direct-current voltage supplies power to the MCU microcontroller and also supplies constant-voltage charging to the farad capacitor energy storage module, charging of the energy storage module can be completed in a short time, when the MCU microcontroller of the electric energy meter receives a switching-on / switching-off instruction, the control module sends out a boosting enabling signal, the DC-DC boosting module is started, the farad capacitor end voltage pump is boosted to the third direct-current voltage, and the farad capacitor energy storage module is started. The driving module outputs large-current pulse to drive the high-power load switch to act reliably, the action is completed, the DC-DC boosting module is closed, the low-power-consumption normal state is recovered, if a power grid is powered down, the farad capacitor can prolong the dormancy operation time of the electric energy meter, and the accuracy of an internal clock is guaranteed.

The utility model discloses a thunder stroke surge protection circuit and protector belongs to the technical field of surge protection, solved the thunder stroke surge protection circuit in the protector in the actual application process because MOV and TVS pipe have greater junction capacitance, lead to serious attenuation high -speed signal lead to signal distortion, rate drop or communication interruption's problem. Including signal input module, primary protection module, decoupling module, secondary protection module, signal output module, ground isolation module, the differential signal positive output end of signal input module is connected to the signal positive input end of primary protection module. The utility model discloses through gas discharge tube and directly releases 90% of the thunder stroke surge energy to the protective earth conductor, simultaneously utilizes decoupling inductance to isolate the residual energy, and by transient voltage suppression diode, the residual voltage clamping is released through the signal ground conductor, guarantees high -speed signal complete transmission under the condition of maintaining total parasitic capacitance below 1 pico -farad.

The invention discloses a self-power-generation sampling device for steel ladle data sampling. The device comprises a thermoelectric power generation sheet, heat dissipation fins, a farad capacitor, a temperature and component measurement data sampling instrument, a reflection light path and a solid light guide rod, one side of the thermoelectric power generation piece is connected with a shell of the steel ladle, and the other side of the thermoelectric power generation piece is connected with the cooling fins and used for generating power based on the temperature difference of the two sides; the thermoelectric power generation sheet is connected with the farad capacitor to charge the farad capacitor; the farad capacitor is connected with the temperature measurement and component measurement data sampling instrument and supplies power to the temperature measurement and component measurement data sampling instrument; the temperature and component measurement data sampling instrument comprises an infrared temperature measurement module, a spectral component measurement module and a wireless transceiver module. The infrared temperature measurement module is used for determining temperature data of molten steel; the spectral component measurement module is used for determining component data of molten steel; and the wireless transceiver module is used for transmitting the data to a far-end receiving device. The device provided by the invention realizes self-energization of the steel ladle in a high-temperature environment and real-time acquisition and transmission of molten steel data.