245 results about "Auxiliary circuit" patented technology

The invention discloses a bypass inductor echelon current limiting topology and method for solid-state power distribution equipment, relates to the technical field of power electronic distribution, and is suitable for solid-state power controllers in the fields of aerospace, new energy automobiles and industrial automation. In order to solve the problems that when a large capacitive load is started, a current peak is likely to be generated to damage a device, and an existing current limiting scheme is low in efficiency or large in size, the topology comprises an input circuit, a main power circuit, an auxiliary circuit, a current limiting circuit, an absorption circuit and a load side circuit. According to the method, the auxiliary circuit switch tube is turned on in an echelon mode, and the main switch tube is turned on to complete starting after load voltage approaches power supply voltage and reaches a non-voltage-difference condition. According to the planar inductor integrated PCB, the size is reduced, the problem of long-term heating of a resistor is solved, the TVS overvoltage protection and RC anti-interference design are matched, the current peak is effectively restrained, the system efficiency and reliability are improved, and the high-power-density and differential-pressure-free starting requirements are met.

The invention discloses a power module and a solid-state transformer, belongs to the field of solid-state transformers, and considers that the power module can be divided into a medium-voltage circuit and a low-voltage circuit, and electric energy required by the low-voltage circuit and the medium-voltage circuit can be uniformly obtained based on low voltage provided externally. Therefore, the low-voltage auxiliary source can supply power to the low-voltage circuit based on the electric energy provided by the system auxiliary power supply, and the medium-voltage auxiliary source obtains the electric energy from the low-voltage auxiliary source in an electrical isolation mode and supplies power to the auxiliary circuit in the medium-voltage circuit, so that the system auxiliary power supply can supply the electric energy to the low-voltage auxiliary source through the low-voltage cable. The level requirement of protection design is reduced, and the cost is reduced; and the medium-voltage auxiliary source and the low-voltage auxiliary source are electrically isolated, so that the system control module can directly send a system control instruction to the low-voltage circuit through a low-cost cable, and the cost is further reduced.

A display device includes: a display panel having a display area and a non-display area around the display area; a plurality of gate lines and a plurality of data lines in the display area, the plurality of gate lines and the plurality of data lines crossing each other to define a plurality of subpixels; a pixel circuit unit in each of the plurality of subpixels; an auxiliary circuit unit in the non-display area; and at least one power supply line in the non-display area and overlapping the auxiliary circuit unit.

The invention discloses head-mounted display equipment, and relates to the technical field of intelligent display equipment, and the head-mounted display equipment comprises a system-in-package main board, an auxiliary circuit board, a conductive part which is electrically connected with the system-in-package main board and the auxiliary circuit board, and a mirror frame. The system-in-package main board and the auxiliary circuit board are arranged on the two sides of the mirror frame respectively. According to the technical scheme provided by the invention, the system-in-package mainboard with a higher integration level is adopted, and the system-in-package mainboard is arranged in the mirror frame and is electrically connected with the auxiliary circuit board through the conductive piece; compared with the prior art, the overall size of the head-mounted display device can be optimized, and the internal space of the device is saved.

Provided is a current resonance type switching power supply device with a simple configuration that has a wide variable range of output voltage and can also achieve ZVS of the main switching element. 【Solution means】The switching power supply device 38 includes a ZVS auxiliary circuit 40 formed by a series circuit of an auxiliary diode 42, an auxiliary inductor 44, and an auxiliary DC power supply 46, which is connected in parallel across both ends of the main switching element 14(2). The switching control circuit 36 determines first and second on-times ton1 and ton2 based on the control voltage Vs of the output by the error amplification circuit 34, and provides a dead time Td to turn on and off the main switching elements 14(1) and 14(2) complementarily. When the first on-time ton1 is ton1 ≧ Tk, control of the first operation mode is performed to set the second on-time ton2 to ton2 = ton1. When the first on-time ton1 becomes ton1 < Tk, control of the second operation mode is performed to set the second on-time ton2 to ton2 > ton1.

The invention relates to the technical field of Internet of Vehicles and battery management, in particular to a charging management and health detection method for a TBOX built-in standby battery, which comprises a charging management module, an MCU (Microprogrammed Control Unit), a charging switch, a discharging switch, an ADC (Analog to Digital Converter) voltage acquisition module, a standby battery, a main and standby power automatic switching module and a rear-end load system, all the modules are electrically connected to form a cooperative work system, the charging management module performs sectional charging on a standby battery based on a battery voltage state, and the MCU control unit controls on-off of the charging switch and the discharging switch and combines sampling data of the ADC voltage acquisition module. A sectional charging mode is adopted, the charging current is dynamically adjusted according to the battery voltage, the charging efficiency is improved, the occurrence of battery swelling, aging and other faults is reduced, and the service life of the battery is prolonged; a battery health detection scheme is optimized, only one ADC voltage sampling port of the MCU is needed, an extra large-current discharge auxiliary circuit is not needed, and MCU resources and hardware cost are saved.

An example apparatus can include one or more of a transformer, a primary circuit electrically coupled to the transformer, and a first auxiliary circuit and a second auxiliary circuit, wherein the primary circuit includes a first bridge leg having a first pair of switches and a second bridge leg having a second pair of switches, the first auxiliary circuit is electrically coupled to the first bridge leg of the primary circuit, the second auxiliary circuit is electrically coupled to the second bridge leg of the primary circuit, wherein each auxiliary circuit is configured to store energy when one switch of a respective pair of switches is on and the other switch of the respective pair of switches is off, and provide the stored energy to recharge all attached capacitances in the respective bridge leg when both switches of the respective pair of switches are off.

The application relates to a circuit for improving the safety of a secondary lithium battery, which comprises a lithium battery body, characterized in that: an auxiliary circuit and an overcurrent protection wire harness are further included; the auxiliary circuit is connected in parallel between the positive and negative output ends of the lithium battery body, the auxiliary circuit comprises a temperature monitoring element and an alarm module connected in series; the temperature monitoring element is used for turning on the auxiliary circuit to make the alarm module electrify and operate when the cell temperature of the lithium battery body rises to an alarm temperature; the alarm module is used for issuing an alarm to remind the staff that the lithium battery body is over-temperature or controlling the charging loop of the lithium battery body to be disconnected; the overcurrent protection wire harness is connected in series on the power loop of the lithium battery group, and the overcurrent protection wire harness is used for cutting off the loop when external short circuit occurs. The scheme solves the problem that the cycle life of the secondary lithium battery group is wasted by the control panel detecting the cell state.

This application relates to a chip control circuit, method, and memory chip. The chip control circuit includes a signal detection trigger module and a circuit enable control module. The signal detection trigger module detects address level transition signals based on address signals and outputs a chip wake-up signal in combination with a chip select signal. Then, the circuit enable control module controls the working state of the chip auxiliary circuit based on the chip wake-up signal and the chip select signal, combined with the enable signal of the chip auxiliary circuit. This enables the chip auxiliary circuit to be woken up on demand, effectively reducing the ineffective power consumption of the chip in standby, low load, or no read / write operation scenarios. It solves the problem of high power consumption caused by the continuous operation of the chip detection circuit in the prior art, and can effectively improve the energy efficiency ratio of the chip and the battery life of the chip device.

The present invention discloses a two-output charging circuit and a method for controlling its auxiliary circuit switch. The two-output charging circuit includes two first-stage switch transistors in the half-bridge inverter circuit generating dead time at changing-over and turn-on, and the second-stage switch transistor being turned off within the dead time. In the present invention, making use of a magnetic core to return from the reverse in its bidirectional magnetization process generates dead time, and controlling the time sequence of the switch device of the post-circuit in the dead time abates the voltage stress of the synchronous rectifier diode and reduces the loss of the absorption circuit of the synchronous rectifier circuit.

The utility model relates to the technical field of network testing, in particular to a network tester with a circuit accommodating mechanism, which comprises an upper tester shell and a lower tester shell, and the upper end face of the upper tester shell and the lower tester shell are both provided with threaded holes. The tester upper shell and the tester lower shell are fixed through bolts, a main circuit board and an auxiliary circuit board are welded to the upper end face of the tester lower shell, and the main circuit board is located on the right side of the auxiliary circuit board. A wire harness is inserted between the main circuit board and the auxiliary circuit board, and a storage device is arranged on the wire harness; the storage device is composed of a top plate, a first semiconductor heat conduction plate, an insertion column, a threaded column and a twisting plate. According to the utility model, through the arrangement of the circuit accommodation mechanism, the wire harness can be effectively fixed and accommodated, the neatness and beauty of the tester are improved, the maintenance and repair of the tester by workers are facilitated, and the service life of the tester is prolonged.

The invention relates to the field of integrated circuit design, in particular to a burst mode trans-impedance amplifier circuit for a 50G PON (Passive Optical Network), which comprises a high-frequency signal main circuit and a quick response auxiliary circuit, and the high-frequency signal main circuit realizes high-sensitivity amplification of low-optical-power signals and low-gain amplification of high-optical-power signals through the variable-gain transimpedance-stage amplification circuit and the amplitude-limiting post-stage amplification circuit. The quick response auxiliary circuit realizes ordered quick gain control and quick direct current bias elimination through a quick average value detection circuit controlled by different reset signals generated by the two circuits, and realizes quick response to burst signals together with the high-frequency signal main circuit. The device has the characteristics of high bandwidth, quick response and the like, can stably convert and amplify 50Gbps burst signals, and is suitable for a 50G PON uplink burst mode optical receiver system.

The utility model discloses a kind of intelligent cloud printers, it is related to printing equipment technical field, wherein, intelligent cloud printer includes shell, network module, printing module and data transmission interface module, main circuit board is equipped in shell, control module is equipped thereon.Network module, printing module, data transmission interface module are all in shell.Network module has signal light group and communication component, signal light group contains auxiliary circuit board and signal light, auxiliary circuit board is in the front side of shell and is electrically connected with control module.Printing module contains printing key and printing component, printing component is electrically connected with control module through main circuit board, printing key and signal light are exposed to the front side plate of shell and on auxiliary circuit board.Data transmission interface module contains flow SIM card plug-in interface and wired network interface, is set on the opposite side in the height direction of main circuit board.The technical scheme provided by the utility model can carry out wireless network connection and wired network connection simultaneously, and has the key setting of convenient and user operation.

The application belongs to the technical field of switching power supply, and an auxiliary circuit is added between two branches of a traditional two-phase Dickson converter; in a dead time when all main power tubes are closed, the auxiliary circuit can transfer the charge of one branch to another branch, realizes zero-voltage turn-on of all main power tubes, and reduces switching loss.

The application discloses an alternating current measurement method, device, system and computer readable storage medium, the method comprises: connecting the to-be-measured circuit with a measurement conductor, and determining a measurement position according to the position of the measurement conductor; determining the background magnetic field magnetic flux corresponding to the measurement position, and measuring the total magnetic field magnetic flux in the measurement position through a solenoid and an auxiliary circuit; based on the background magnetic field magnetic flux and the total magnetic field magnetic flux, determining the alternating current intensity corresponding to the to-be-measured circuit. The application determines the total magnetic field magnetic flux and the background magnetic field magnetic flux in the measurement position, calculates the alternating current intensity corresponding to the to-be-measured circuit by using the total magnetic field magnetic flux and the background magnetic field magnetic flux, eliminates the background magnetic field magnetic flux in the calculation process by considering the background magnetic field magnetic flux in the calculation process, and thus the precision of the alternating current measurement based on the magnetic field is improved.

The invention provides a power supply system which comprises a plurality of power units and at least one first voltage conversion circuit. The power supply system has an AC end and a DC end. The plurality of power units are electrically connected between the alternating current end and the direct current end respectively, and each power unit comprises a main power circuit and an auxiliary circuit. The main power circuit comprises a bus capacitor, and the auxiliary circuit is electrically connected to the main power circuit. The input end of each first voltage conversion circuit is electrically connected to the bus capacitor of one of the plurality of power units, and the first voltage conversion circuit is configured to convert the voltage of the bus capacitor into a first voltage so as to provide auxiliary electric energy required by the power supply system in a starting stage.

A semiconductor device includes a memory cell having a frontside and backside. A backside signal line is connected to the memory cell on the backside. A backside metal-insulator-metal (MIM) capacitor is disposed on the backside and has a first electrode connected to the backside signal line and a second electrode connected to an assist circuit that electrically boosts access operations of the memory cell.

The application provides an ultrasonic knife driving system, comprising a first power supply, a power amplifier, a main transformer, a main processor, a DA digital-analog converter, a voltage signal AD sampling circuit, a current signal AD sampling circuit, an auxiliary circuit, a second power supply and a transducer assembly, wherein the first power supply is an AC-DC power supply connected to a power frequency voltage; the power amplifier is arranged on a high voltage side of the system, and the leakage current of the ultrasonic knife driving system is lower than a safety requirement value by configuring the positions of components on the high voltage side and the low voltage side and making the parasitic capacitance of the first power supply or the high voltage and low voltage isolation components lower than a preset value. The application improves the safety of the ultrasonic knife driving system and meets higher level CF requirements.

The embodiment of the invention discloses a surge protector and electronic equipment. The surge protector comprises a first protection device, a second protection device, a first auxiliary circuit and a second auxiliary circuit, the first end of the first protection device serves as the first end of the surge protector, the second end of the first protection device is connected with the first end of the second protection device, and the second end of the second protection device serves as the second end of the surge protector; the first end of the first auxiliary circuit is connected with the first end of the first protection device, and the second end is connected with the second end of the first protection device; the first end of the second auxiliary circuit is connected with the first end of the second protection device, and the second end is connected with the second end of the second protection device; and in the normal working state, the first protection device and the second protection device are controlled to be subjected to voltage sharing, and in the surge protection state, the first protection device and the second protection device are controlled to be conducted step by step. According to the scheme, the unification of high direct current withstand voltage and low residual voltage is realized.

The application discloses a memory, a storage device and an electronic device, and relates to the technical field of memories, and specifically discloses a memory, which comprises a memory module, wherein the memory module comprises a circuit board, a memory chip and an auxiliary circuit; one side of the circuit board is provided with electrically connected pins for establishing electrical connection with a memory backboard; the memory chip and the auxiliary circuit are attached to the other side of the circuit board; and the cross-sectional dimension of the circuit board is smaller than that of the memory backboard. In the manner, the memory module can be produced independently, the architecture of the corresponding memory backboard is simpler, the number of layers is smaller, and the manufacturing cost is lower; and because the cross-sectional dimension of the circuit board is smaller than that of the memory backboard, the length of the data command address line for electrical connection of the memory chip can be reduced, so that the overall performance of the memory is improved.

The invention relates to a turbine engine comprising: - a lubrication chamber (17) in which a speed reducer (12) is located; and - a main lubrication circuit and an auxiliary lubrication circuit, which are connected to the lubrication chamber (17), the auxiliary circuit being connected to an auxiliary tank (31) comprising an internal oil storage cavity (33) and an oil inlet pipe (34) that is connected to the internal cavity (33) and that is capable of collecting oil coming from the lubrication chamber (17), the oil inlet pipe having a lower end (34b) that opens into the internal cavity (33). The turbine engine is characterised in that the auxiliary tank (31) further comprises a degassing pipe (35) comprising an air inlet (37) arranged in the internal cavity (33) and an air outlet (38) arranged in the lubrication chamber (17), the degassing pipe (35) passing through the inlet pipe (34) via the lower end (34b).

Integrated circuits having an array of memory cells are provided. Each memory cell can include at least a pair of cross-coupled inverters, a write access transistor, and optionally a separate read port. The cross-coupled inverters in each memory cell can have a positive supply terminal. The positive supply terminal of each memory cell along a given column in the array can be coupled to a respective pull-up transistor. The pull-up transistor can receive a control signal from a pull-up weakening control circuit. The control signal can be temporarily raised during a write operation, otherwise can be driven back to ground to help optimize read performance. The pull-up weakening control circuit can be implemented using a chain of N-channel transistors or resistors.

The utility model provides a fault indicator using lora communication. The fault indicator comprises a control unit, and a permalloy power taking circuit, a Rogowski coil sampling circuit, a LoRA module circuit, an LED control circuit and other auxiliary circuits which are all in communication connection with the control unit. The other auxiliary circuits comprise a watchdog circuit, a turning circuit and an electric field sampling circuit, and the watchdog circuit, the turning circuit and the electric field sampling circuit are all in communication connection with the control unit. The fault indicator has the beneficial effects that the fault indicator selects the 255MESH lora module, and the self-routing function of the 255MESH lora module is utilized to enable the node to automatically calculate the routing, so that the dependence on the central node is reduced, and the flexibility and the reliability of the network are improved; the power consumption is reduced by applying multiple dormancy mechanisms, the system adapts to different application scenes, the communication distance can be greatly increased, the anti-interference capability is enhanced, and the system also has an expansion function and flexibility.

The invention discloses a detection-free zero-voltage switching-on method based on a full-bridge inverter intermittent current mode, and relates to a power electronic converter. The micro inverter works in an inductive current intermittent conduction mode, zero-voltage switching-on of a switching tube can be realized on the basis of not adding any additional device and auxiliary circuit, and the efficiency of the inverter is effectively improved. The traditional scheme generally depends on a sampling circuit to detect a resonance current zero crossing point between an inductor and a switch tube shunt capacitor to determine the turn-on time, so that the hardware complexity is increased, and the zero-voltage turn-on effect depends on the reliability of a detection circuit. And when the switching frequency is relatively high, the inherent delay characteristic of the sampling circuit can limit the zero-voltage switching-on realization effect. The invention provides a zero-voltage turn-on moment determination strategy based on inverter behavior modeling in an intermittent conduction mode, a detection circuit is not needed, and the zero-voltage turn-on moment can be accurately determined only through discrete time control by a controller after modeling, so that full-period soft switching is realized, and the hardware complexity is reduced.

A lamp current detection device comprises a control unit and a power connection unit, the control unit is connected with the power connection unit, after the power connection unit is connected with a lamp, detection is carried out through the control unit, a detection structure is output and displayed, a plurality of detection circuits are arranged in the control unit, each detection circuit comprises a main circuit and a plurality of auxiliary circuits, and the main circuits are connected with the auxiliary circuits. The main circuit and the plurality of auxiliary circuits are respectively connected to power connection terminals of the power connection unit, the main circuit and the plurality of auxiliary circuits are arranged in the control unit through cooperative work of the control unit and the power connection unit, each auxiliary circuit and the main circuit can form an independent detection circuit, a plurality of circuit modules in the lamp can be detected at the same time, and the detection efficiency is improved. Synchronous detection of parameters of all the modules is achieved, the detection time is greatly shortened, the detection efficiency is remarkably improved, and the production progress of a lamp production line is effectively accelerated.

The utility model relates to a semiconductor packaging structure, and the structure comprises a circuit board which comprises a main line substrate and an auxiliary line substrate, the chip is arranged on the main line substrate, and the surface of the chip is covered with a plastic packaging layer; and the external electronic device is arranged on the auxiliary line substrate, and the main line substrate is electrically connected with the auxiliary line substrate. According to the semiconductor packaging structure provided by the invention, the chip and the external electronic device are arranged on different circuit substrates, so that when the chip is subjected to plastic packaging, the external electronic device is not influenced, after the chip is subjected to plastic packaging, the auxiliary circuit substrate is assembled to the main circuit substrate, a specific mold does not need to be formed through mold opening, and material waste is not caused.

An oil tank for an aircraft turbomachine, including: a main enclosure capable of containing the oil, an oil inlet mixed with air, an oil outlet, an auxiliary enclosure arranged inside the main enclosure, including an enclosing wall, and two end walls adjacent to the enclosing wall, at least one of the two end walls including at least one oil passage with the interior of the main enclosure, at least one auxiliary inlet opening tangentially to the enclosing wall and passing through the main enclosure, an auxiliary outlet, tangential to a larger diameter section of the surrounding wall. The auxiliary outlet passes through the main enclosure for connection to the auxiliary circuit.

The utility model provides a power control module and a test system thereof. The power control module comprises a first capacitor, a voltage conversion circuit and an electric control circuit; the first capacitor is used for connecting a first power supply; the first capacitor, the voltage conversion circuit and the electric control circuit are sequentially connected; the first capacitor inputs electric energy provided by the first power supply to the voltage conversion circuit; the voltage conversion circuit boosts the input electric energy and outputs the boosted electric energy to the electric control circuit; the output end of the voltage conversion circuit is connected with an interface device which is used for connecting a test auxiliary circuit. In the mode, the output end of the voltage conversion circuit is connected with the interface device, and the test auxiliary circuit is connected through the interface device, so that the voltage conversion circuit is independently tested, and the circuit test accuracy and test efficiency are improved.

An embedded memory device includes a retention voltage supply circuit outputting a retention voltage in response to a retention activation signal, and a plurality of array voltage supply circuits outputting corresponding array voltages to corresponding bit cells. The plurality of array voltage supply circuits respectively include an array switch providing the retention voltage as a corresponding array voltage in response to the retention activation signal, a power switch providing a power supply voltage as the corresponding array voltage in response to a power gate activation signal, and an auxiliary circuit compensating the corresponding array voltage during a write operation or a read operation.

A write assist circuit can include a control circuit and a voltage generator. The control circuit can be configured to receive memory address information associated with a memory write operation for memory cells. The voltage generator can be configured to provide a reference voltage to one or more bitlines coupled to the memory cells. The voltage generator can include two capacitive elements, where during the memory write operation, (i) one of the capacitive elements can be configured to couple the reference voltage to a first negative voltage, and (ii) based on the memory address information, both capacitive elements can be configured to cumulatively couple the reference voltage to a second negative voltage that is lower than the first negative voltage.