514 results about "Electronic switch" patented technology

A battery disconnect unit including a housing, an electronic relay module installed on a charge / discharge line of a battery within the housing and including electronic switch devices capable of a switching operation of selectively blocking the flow of a current in the charge / discharge line, a heat dissipation cover provided with a structure surrounding at least a portion of the electronic relay module and formed of a material capable of heat exchange with the electronic relay module, and a cooling plate disposed in contact with the heat dissipation cover and provided to allow a refrigerant to flow in the cooling plate.

The application provides a pressure signal fitting method and device, the method comprises: applying pressure to each sensing point in a pressure sensor, measuring the relationship between pressure and resistance of each sensing point, and integrating to obtain the pressure-resistance relationship; the pressure-resistance relationship is corrected through a numerical filtering algorithm, and the corrected pressure-resistance relationship is fitted to obtain an optimized pressure-resistance relationship; the switching of the voltage sensing circuit sensing points is carried out through an integrated analog electronic switch, the voltage of the stressed multiple array sensing points is measured; the resistance of the multiple array sensing points is calculated according to the measured voltage combined with the acquisition circuit; and the pressure of the multiple array sensing points is calculated through the optimized pressure-resistance relationship; based on the area of the stress area and the non-stress area of the multiple array sensing points, the actual stress of the multiple array sensing points is calculated through the relationship between force and pressure.

This application provides a smart electronic switch capable of providing reminders, comprising: a power switch whose gate is connected to a switch control unit; and an aging assessment control module connected to a first terminal, a second terminal, and the gate of the power switch, respectively. The smart electronic switch includes an aging assessment mode. In this mode, the aging assessment control module controls the power switch to turn on, sets the gate-source voltage of the power switch to a first preset voltage, and compensates the drain-source current of the power switch to a first reference current. The aging assessment control module obtains first parameter information characterizing the on-resistance and compares this first parameter information with reference parameter information. If the comparison result between the first parameter information and the reference parameter information meets a preset condition, the aging assessment control module issues a reminder signal. Embodiments of this application also provide a chip, an automobile, and a method.

Various techniques are described to control the rate of change of current (di / dt) and the rate of change of voltage (dV / dt) for power electronic switches with conventional gate drivers and a few additional components. By implementing these techniques, designers may achieve better control over the switching behavior, reduce losses, and improve the overall reliability and efficiency of their circuits. This is particularly important in applications such as power inverters, where high performance and reliability are important.

The invention relates to an on-board electrical system of a rail vehicle, wherein the on-board electrical system comprises at least one vehicle-wide DC busbar, at least one on-board electrical system battery which is designed to supply the DC busbar, a plurality of distributed electrical loads, a plurality of load circuits which connect the loads to the DC busbar, and a plurality of controlled electronic switching and protection devices which are designed to switch and protect the load circuits, and wherein the on-board electrical system is characterised in that an adaptation device is arranged upstream and / or downstream of at least one of the electronic switching and protection devices, wherein the adaptation device comprises at least one passive electrical component which limits a rate of rise of current.

A device for replacing at least one chip or electronic element of an electronic component, in particular an LED package or an LED display, includes at least two standard electrical contacts to which a chip comprising at least two electrical contacts is electrically connectable. The device also includes an electronic switch electrically connecting the first standard electrical contact to an electrical power supply source, and least three electrical repair contacts to which a repair chip identical in construction to the chip is electrically connectable. The first electrical repair contact is electrically connected to the electrical power supply source. The second electrical repair contact is electrically connected to the electronic switch. The third electrical repair contact is electrically connected to the second electrical standard contact.

The invention relates to a method (100) for determining power data of electronic power circuits, comprising determining a plurality of switching energy values (110) during a periodic duration of a control signal of the electronic power circuit; and determining the power data (120) which have a switching cycle energy value that is determined on the basis of the plurality of switching energy values and a number of times the plurality of switching energy values are determined. The invention further relates to a computing unit for determining power data, which computing unit is designed and configured to carry out the method.

The invention provides a hybrid switch device, and relates to the technical field of electrical equipment. The hybrid switch device comprises a mechanical switch unit, an electronic switch unit, an isolation switch and a protection element. The electronic switch unit and the mechanical switch unit are connected in parallel, the isolation switch is arranged in a loop where the mechanical switch unit is located in parallel and arranged in a loop where the electronic switch unit is located in series, or the isolation switch is arranged in the mechanical switch unit in series and arranged in a loop where the electronic switch unit is located in series; the protection element is connected in parallel with the electronic switch unit; in the switching-on process, the isolating switch, the electronic switch unit and the mechanical switch unit are sequentially switched on, and the electronic switch unit is switched off; and in the opening process, the electronic switch unit is closed, and the mechanical switch unit, the electronic switch unit and the isolating switch are sequentially disconnected, so that the isolating switch ensures the electrical isolation safety, and the reliability, controllability and connection layout rationality of the hybrid switching device are improved.

The embodiment of the invention provides a laser hair removal instrument and a control method thereof. The laser hair removal instrument comprises a host and at least one pair of treatment handles. The host comprises a laser driving power supply, a controller and a socket arranged for the treatment handle; each treatment handle comprises an electronic switch and a laser, and each treatment handle can be connected with the host through a corresponding socket; the laser driving power supplies are respectively connected with the lasers through the corresponding electronic switches, and the controller is respectively connected with the corresponding electronic switches. According to the laser hair removal instrument provided by the embodiment of the invention, the paired treatment handles are configured, each treatment handle is provided with the electronic switch, and the controller can control the on-off of the electronic switches of the two treatment handles in the multiplexing period, so that the laser devices of the two treatment handles can alternately work; two persons adjacent to the bed can perform laser hair removal at the same time, the congestion problem caused by the fact that multiple persons operate multiple laser hair removal instruments in the prior art is partially solved, and the mechanism operation burden and the customer service price are reduced.

A method switches off an electrical consumer in a vehicle, which is connected to a supply line provided with an electronic switch. The method includes: monitoring a current consumption of the consumer in a monitoring mode with respect to a safety switch-off threshold, and when the switch-off threshold is exceeded or fallen short of, switching off the electronic switch, switching a main monitoring unit from the standby mode to the monitoring mode when an amplitude of a dynamic change of the current consumption of the consumer reaches or exceeds a first threshold value, and monitoring the current consumption of the consumer in the standby mode by an auxiliary monitoring unit, and when the first threshold value is reached or exceeded, triggering the switching of the main monitoring unit from the standby mode to the monitoring mode.

There is disclosed herein an energy storage system for a direct current (DC) transmission system, the energy storage system being configured to be connected to a DC link. The energy storage system comprises a first system terminal, a second system terminal, a first converter connected to the first system terminal, and a second converter connected to the first converter and the second system terminal. The energy storage system further comprises an AC loop device providing an alternating current (AC) path, and a plurality of energy storage devices connected in parallel with the second converter comprising a cell having power electronic switches, and an energy storage element connected to the cell, wherein the cells are individually switchable. The present disclosure further relates to a method for providing energy storage to a DC transmission system.

The application discloses a multi-compatibility intelligent USB power supply imitation dry battery power conversion device, which comprises a USB power supply input module for connecting with 5V power supply voltage of an external USB power supply; an intelligent voltage conversion and management module electrically connected with the USB power supply input module and used for converting the 5V power supply voltage into 3V direct current output voltage; a battery electrode output module electrically connected with an output end of the intelligent voltage conversion and management module and used for conducting the 3V direct current output voltage to a battery compartment of an external power consumption equipment; and a working state indication module electrically connected with the intelligent voltage conversion and management module and used for directly displaying the working state of the current device to a user, including a power-on state and a fault protection state. The application adopts a synchronous rectification step-down type DC-DC chip to cooperate with current detection and an electronic switch, realizes accurate and stable voltage conversion from 5V to 3V, has an automatic sleep function under no load, and solves the problems of unstable direct power supply voltage and excessively high power consumption of the USB power supply.

This invention belongs to the field of power electronics technology and relates to a DC electronic switch circuit with over-temperature protection and spike suppression, and its operating method. It includes: a power unit, whose input terminal is connected to the positive DC input terminal H3, and whose output terminal is connected to the positive DC output terminal H5; a drive unit, whose input terminal is connected to the drive signal terminal H1, and whose output terminal is connected to the control terminal of the power unit; an over-temperature protection unit, whose sampling terminal is thermally coupled to the power unit, and whose control terminal is connected to the drive unit; a spike suppression unit, including a first spike suppression branch and a second spike suppression branch; and a negative DC output terminal H6 connected to the negative DC input terminal H4. This invention achieves real-time monitoring and active protection of the junction temperature of the power device, rapidly shutting down in case of overheating to avoid thermal breakdown; simultaneously, it utilizes bidirectional spike suppression technology to effectively block surge impacts, ensuring the safe and reliable operation of the electronic switch in harsh electrical environments.

The present invention relates to an electronic protection switch (1) having two identical semiconductor switches (2), each semiconductor switch having a switching element (21) and a diode (22) arranged in antiparallel with the switching element (21). To improve the electronic switch, it is proposed that the electronic switch also has a first power interface (3) and a second power interface (4), which have a positive potential interface (31, 41) and a negative potential interface (32, 42), respectively. The first semiconductor switch in the semiconductor switch (2) is arranged between the positive potential interface (31) of the first power interface (3) and the positive potential interface (41) of the second power interface (4) without a semiconductor series circuit, and the second semiconductor switch in the semiconductor switch (2) is arranged between the negative potential interface (32) of the first power interface (3) and the negative potential interface (42) of the second power interface (4) without a semiconductor series circuit. The switching element (21) of the corresponding semiconductor switch (2) is arranged to be able to guide and cut off the current from the first power interface (3) to the second power interface (4). The invention also relates to a power grid (5), particularly a DC voltage network (6), having a first subgrid (51) and a second subgrid (52), wherein the power grid (5) has an electronic protection switch (1) for disconnecting the first subgrid (51) and the second subgrid (52) from each other, wherein the first subgrid (51) is connected to a first power interface (3) and the second subgrid (52) is connected to a second power interface (4). The invention also relates to a method for operating such a power grid (5).

The utility model discloses a universal auxiliary instrument desk for a test drive-by-wire chassis, which comprises an auxiliary instrument outer shell formed by connecting a left side shell and a right side cover plate of the auxiliary instrument desk through detachable bolts. A plurality of electric device switch mounting hole positions, a right side cover plate mounting hole position, a signal wire outlet hole, a first group of auxiliary instrument desk fixing hole positions and a second group of auxiliary instrument desk fixing hole positions are formed in the surface of the auxiliary instrument desk left side shell, and a buckle structure is arranged on the inner side of the right side cover plate; the clamping groove is matched with the clamping groove in the edge of the left shell of the auxiliary instrument desk to achieve quick disassembly. The universal mounting hole site is matched with a multi-platform chassis, so that cross-vehicle type quick disassembly and assembly are realized; an electronic switch assembly and a controller are integrated, and function expansion and flexible adjustment are supported; the quick-release cover plate facilitates maintenance of internal modules, and the maintenance time is shortened; and an expansion interface and a protection structure are reserved, so that the test stability and safety are enhanced.

The invention relates to the technical field of photosensitive material plate repairing equipment, in particular to a photosensitive material plate defect repairing device and a photosensitive material plate defect repairing method. A photosensitive material plate defect repairing device comprises a device frame, a photosensitive material plate placing platform is arranged on the device frame, a photosensitive material plate repairing liquid containing groove is further installed on the device frame, the containing groove is provided with a repairing liquid output pipe, the repairing liquid output pipe is connected with a spraying head through an output pump, and the spraying head is connected with a spraying head. The spraying head is connected with a control device, the lifting device is connected with the control device, a first electronic switch is further installed on the spraying head or in the middle of the repairing liquid output pipe, the first electronic switch is connected with the control device, and the control device can control the opening degree of the first electronic switch. The method has the advantages of being easy to use, good in repairing quality and unobvious in repairing boundary. The invention also provides a photosensitive material plate defect repairing method.

The utility model relates to electrical engineering and can be used to protect electromagnetic voltage transformers from ferroresonant oscillations occurring in voltage transformers in distribution networks with a voltage class of 6-10 kV, alternating current with a frequency of 50 Hz with an isolated neutral.In a device for protecting voltage transformers from ferroresonance phenomena, designed with the possibility of connecting to two terminals of auxiliary secondary windings of three single-phase transformers connected in an open-delta circuit, containing a series-connected RTS thermistor, a damping resistor and an electronic switching circuit with a threshold switching characteristic, which includes a switching element in the form of a triac, the control electrode of which is connected to a control circuit including a dinistor, two resistors and a capacitor, the control electrode of the triac is connected to the control circuit through a normally closed controlled key, the RTS thermistor is equipped with a temperature sensor connected to the controlled key, and the dinistor is selected to be symmetrical.Technical result: increasing the effective operating time of a device for protecting voltage transformers from ferroresonance phenomena in the presence of modes in the network accompanied by prolonged exposure to single-phase short circuits to ground by ensuring restoration of the original operating mode. 2 fig.

1. The name of the design product: touch switch (TS21). 2. The use of the design product: electronic switch for circuit control on digital products, communication products, household appliances, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a high-voltage pulse power supply based on a combination mode of a super capacitor and a thin-film capacitor. Comprising a DSP signal processing and control circuit, a man-machine interaction module, a communication and external control input circuit, a mains supply alternating current input and common mode filtering module, an isolation type super capacitor energy injection system, a medium-voltage super capacitor energy storage unit, a non-isolation type booster circuit, a high-frequency filtering circuit and a high-voltage thin-film capacitor energy storage unit. The system comprises an output high-voltage electronic switch, an isolation driving circuit, a multi-point voltage and current detection circuit and a system power supply module. According to the invention, a super capacitor and a thin-film capacitor are mainly used as a secondary energy storage core, and the imbalance phenomenon of a conventional hybrid energy storage system of a super capacitor, an electrolytic capacitor and a thin-film capacitor is avoided through the isolation of voltages and impedances at all levels; and the service life of the super capacitor is prolonged.

The invention provides an over-acceleration protection system of an electric motorcycle. A Hall rotating handle outputs an operation control signal to a vehicle-mounted controller and a first input end of a comparison control circuit; the output end of the speed sensor is connected to the second input end of the comparison control circuit; the power input ends of the first electronic switch and the second electronic switch are connected to the power output end of the motor driving circuit, the power input end of the first electronic switch is connected to the power end of the driving motor, and the power output end of the second electronic switch is connected to the input end of the digital potentiometer. The output end of the digital potentiometer is connected to the power supply end of the driving motor, and the control end of the digital potentiometer is connected to the vehicle-mounted controller; the control input end of the first control circuit is connected to the first control output end of the comparison control circuit, and the first control circuit is used for controlling the on-off of the first electronic switch; the control input end of the second control circuit is connected to the second control output end of the comparison control circuit, the control output end of the second control circuit is used for controlling the on-off of the second electronic switch, and the second control circuit is also used for controlling the on-off of the first electronic switch when the second electronic switch is conducted.

The utility model relates to a negative pressure weighing chamber FFU group control system and a power supply module, a main power supply module PWR1 selects a linear power supply and stably supplies power to an external function board module, the positive electrode of the main power supply module PWR1 is connected with the input end of an electronic switch SW1 through a wire, and the negative electrode is connected with the negative electrode of a function board; the redundant backup power supply module PWR2 adopts a storage battery, and the negative electrode is connected with the negative electrode of the function board. The voltage sensor VT is an INA219 sensor and accurately measures PWR1 voltage, the microcontroller selects STM32 and controls on-off of the electronic switches SW1 and SW2 according to sensor information, the electronic switches SW1 and SW2 select N-channel MOS field effect transistors, and a 1N4007 protection diode is further arranged to prevent current reversal. After the system is initialized, the PWR1 supplies power normally, and the PWR2 is switched to quickly when the voltage is abnormal, so that uninterrupted power supply is ensured, and the system has the advantages of high stability, accurate monitoring, quick switching and the like, and meets the strict requirements of the negative pressure weighing chamber.

This invention relates to the field of atomic-level manufacturing technology, specifically to a pulse-triggered cluster powder preparation system. The system includes a gas path system, a cluster powder generation device, a pulse-triggered cluster powder discharge device, and a cluster powder collection device. The gas path system introduces an inert carrier gas into the cluster powder generation device to rapidly condense and nucleate evaporating atoms, forming cluster powder, and simultaneously transports the powder to the collection device. A cluster material target is disposed inside the cluster powder generation device. The pulse-triggered cluster powder discharge device is directly connected to the cluster material target through an internal discharge electrode. The inlet of the cluster powder collection device is connected to the outlet of the cluster powder generation device. This invention uses a high-voltage IGBT as the electronic switch for the cluster powder discharge device. A signal detection circuit monitors the current during discharge, controlling the IGBT to turn off and eliminate low-voltage continuous discharge, thereby increasing the yield of cluster powder.

The invention discloses a series electronic water gauge circuit based on PMOS (P-channel Metal Oxide Semiconductor) tubes. The series electronic water gauge circuit is characterized by comprising a plurality of cascaded water level monitoring sub-circuits which are arranged in series at equal intervals and a voltage division circuit. The water level monitoring sub-circuit cascade arranged in series at equal intervals comprises n stages of sub-circuits, n is greater than 1, and the structures of the sub-circuits of each stage are the same; the first-stage water level monitoring sub-circuit comprises an electronic switch M1, resistors S1 and R1, a monitoring electrode X1 and a water body resistor W1; the electronic switch is a PMOS (P-channel Metal Oxide Semiconductor) tube M1, a monitoring electrode X1 is simultaneously connected with a resistor R1 and a grid electrode of the PMOS tube M1, the other end of the resistor R1 is connected with a power supply VCC and a source electrode of the PMOS tube M1, one end of the resistor S1 is connected with a drain electrode of the PMOS tube M1, and the other end of the resistor S1 is connected to the voltage division circuit S0 to output a water level monitoring signal Vo. Compared with the prior art, the series type electronic water gauge circuit based on the PMOS tubes has the advantages that the electronic water gauge circuit based on the PMOS tubes is provided, and the electronic water gauge circuit of high-speed collection of a simple combination logic circuit is provided.

The utility model discloses an underwater laser radar and communication composite integration device, including main control unit, scanning device, transmission link and receiving link, and scanning device is used for scanning target object, transmission link includes the DAC of connection in proper order, analog electronic switch, laser, transmission lens, and DAC and analog electronic switch all electricity is connected in main control unit, and main control unit can control the opening and close of analog electronic switch, and transmission lens is connected in scanning device, receiving link includes the receiving lens of connection in proper order, photoelectric detector and ADC, and receiving lens is connected in scanning device, and ADC is connected in main control unit. The utility model technical scheme is designed in sharing optical path, reduces optical assembly, reduces equipment weight, realizes mode switching through electronic switch, reduces the delay, and significantly reduces the cost.

The present application relates to the technical field of clinical operation, in particular to a high-frequency electrotome neutral electrode detection system and method; including electronic switch circuit, forward isolation circuit, neutral plate interface, integral compensation operational amplifier circuit, embedded single-chip microcomputer CPU module, impedance display module and sound-light warning module; the forward isolation circuit is used for sending excitation signal and receiving feedback voltage signal; the integral compensation operational amplifier circuit is used for converting the feedback voltage signal to get stable low ripple DC voltage signal; the electronic switch circuit is used for connecting and disconnecting between the integral compensation operational amplifier circuit and the forward isolation circuit; the embedded single-chip microcomputer CPU module is used for obtaining contact resistance; the impedance display module is used for real-time monitoring the neutral plate; the sound-light warning module is used for sending sound-light prompt, through the above structure, the neutral electrode is detected in the operation process, so as to avoid affecting the clinical operation effect.

A circuit breaker device protects an electric multi-phase low-voltage alternating current circuit. The device contains a housing having grid-side phase connections and load-side phase connections for phase conductors of the low-voltage alternating current circuit. Series circuits of the device each contain a mechanical phase contact and an electronic switch. Each series circuit electrically connects a grid-side phase connection to one of the load-side phase connections. The mechanical phase contacts are switched together to an open state to prevent a current flow or to a closed state for a current flow, by use of semiconductor-based switch elements. In each series circuit, the level of the current of the respective phase conductor is ascertained. If a first current threshold or current / time threshold is exceeded in a phase conductor, a prevention of the current flow is initiated, and the electronic switches are switched to a high-ohmic or low-ohmic state by a control input.

Method for a voltage converter, wherein the method comprises in each of successive control cycles: switching on a first electronic switch (1) connected in series with a primary winding (21) of a transformer (2) for a duty period (TON1); premagnetizing the transformer (2) for a premagnetization period (TON2) before the first electronic switch (1) is switched on; wherein a first delay time (TDEL1) exists between an end of the premagnetization period (TON2) and a start of the duty period (TON1), wherein the premagnetization period (TON2) is set based on information about the voltage level of an input voltage (Vin) supplied to the voltage converter, depending on the voltage level of the input voltage (VIN).

Provided is a switching module and a process of commutating the switching module. The switching module includes an H-bridge circuit with bidirectional switches and an active clamp with switches that are also arranged as an H-bridge. The process of commutating the switching module includes a sequence of alternating first and second commutation events where timing signals used to control the switches during each commutation event are varied according to closed loop control of the voltage across the energy storage device of the active clamp.

The utility model provides a marine starting battery charging protection circuit and a marine starting battery. The circuit comprises a battery main control module, a battery voltage acquisition module and a charging protection module, the charging protection module comprises a charging electronic switch tube, a discharging electronic switch tube, an electrical isolation electronic switch tube and a current-limiting protection inductor, the first end of the charging electronic switch tube is connected with the first end of the current-limiting protection inductor, and the second end of the current-limiting protection inductor is connected with the first end of the electrical isolation electronic switch tube; the second end of the electrical isolation electronic switch tube is used for being connected with a charging positive electrode, and the control end of the electrical isolation electronic switch tube is connected with the isolation control end of the battery main control module. When charging overcurrent occurs, the battery voltage collecting module sends collected battery voltage to the battery main control module, the battery main control module controls signals, and at the moment, the current-limiting protection inductor generates forward electromotive force by controlling the duty ratio of the electrical isolation electronic switching tube, so that the charging current is prevented from being too large.

The invention relates to a system (2) for converting a first voltage (U1) into a second voltage (U2), comprising: a converter (4) provided with at least two input terminals (5), at least two output terminals (8), and at least one electronic switching branch (10), the or each branch (10) comprising two switching half-branches (16) connected in series to an intermediate terminal (8), the at least one half-branch (16) comprises at least one switching member (19), the or each switching member (19) comprising a controllable electronic switch (20); and means (6) for controlling the or each electronic switch (20) of the or each branch (10); the converter (4) further comprises, for the or each electronic switch (20), a passive voltage limiting component (12) connected to said electronic switch (20), thermally coupled to said electronic switch (20) and having a negative temperature coefficient.