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30results about How to "Increase the current level" patented technology
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Semiconductor device including a multi-channel fin field effect transistor including protruding active portions and method of fabricating the same
ActiveUS7394116B2Increase the effective channel lengthIncrease the current levelTransistorSolid-state devicesGate dielectricDevice material
In a semiconductor device, and a method of fabricating the same, the semiconductor device includes a semiconductor substrate having a cell region and a peripheral circuit region, a portion of the semiconductor substrate in the cell region and in the peripheral circuit region including an isolation region defining an active region, a portion of the active region protruding above an upper surface of the isolation region to define at least two active channels, a gate dielectric layer formed over the active region of the semiconductor substrate including the at least two protruding active channels, a gate electrode formed over the gate dielectric layer and the isolation region of the semiconductor substrate, and a source / drain region formed in the active region of the semiconductor substrate on either side of the gate electrode.
Owner:SAMSUNG ELECTRONICS CO LTD
Current-perpendicular-to-the-plane structure magnetoresistive element and head slider
InactiveUS20050146813A1Increase the current levelReduce sensitivityNanomagnetismMagnetic measurementsMagnetizationMagnetic reluctance
A magnetoresistive film is interposed between domain controlling films in a current-perpendicular-to-the-plane (CPP) structure magnetoresistive element. The domain controlling films designed to establish a first biasing magnetic field of a first intensity across the magnetoresistive film along the front end of the magnetoresistive film and a second biasing magnetic field of a second intensity larger than the first intensity along the rear end of the magnetoresistive film. The second biasing magnetic field serves to establish a single domain property within the magnetoresistive film along the rear end. Although the first biasing magnetic field acts in the same direction as the current field at a position near the front end of the magnetoresistive film, the magnetization is allowed to reliably rotate near the front end. A sensing current having a larger current value can be supplied to the magnetoresistive film. The magnetoresistive film exhibits a sufficient sensitivity.
Owner:FUJITSU LTD
Cascaded multi-level power electronic transformer based on DSP (Digital Signal Processor)/FPGA (Field Programmable Gate Array) cooperative control
InactiveCN104852601ACalculation speedReduce power consumptionAc-dc conversionReactive power adjustment/elimination/compensationQuality controlHigh frequency
The invention discloses a cascaded multi-level power electronic transformer based on DSP (Digital Signal Processor) / FPGA (Field Programmable Gate Array) cooperative control, comprising a pre-stage rectification-level circuit, a middle isolation-level circuit, a rear-stage inversion-level circuit and a cooperative control module. Power frequency alternating current is rectified to generate first direct current via the pre-stage rectification-level circuit, the first direct current is modulated via the middle isolation-level circuit to generate high frequency square wave alternating current, the high frequency square wave alternating current is subjected to voltage grade conversion, isolation and demodulation via a high-frequency transformer to generate second direct current, and the second direct current is inverted via the rear-stage inversion-level circuit to output required alternating current. The cooperative module comprises a DSP module and an FPGA module and is used for controlling PWM (Pulse-Width Modulation) waves of the pre-stage rectification-level circuit, the middle isolation-level circuit and the rear-stage inversion-level circuit respectively. The cascaded multi-level power electronic transformer provided by the invention provides enough PWM ports to achieve circuit integration, achieves bidirectional energy flow, reactive compensation, quality control of electric energy and access of renewable energy source and energy storage equipment, is suitable for high-voltage and large-power places, can reduce output harmonic waves without improving the switching frequency, reduces loss and is free of voltage-sharing problems.
Owner:GUANGXI UNIV
Integrated mosfet and schottky device
ActiveUS20080191274A1Improve performanceLow reverse leakageDiodePower semiconductor deviceSource field
A power semiconductor device that includes a trench power MOSFET with deep source field electrodes and an integrated Schottky diode.
Owner:INFINEON TECH AMERICAS CORP
Vacuum explosion chamber and contact structure thereof
InactiveCN104966650AIncrease contact areaIncrease the areaHigh-tension/heavy-dress switchesAir-break switchesVacuum switchMetal
The invention relates to the vacuum circuit breaker technical field, more specifically a vacuum explosion chamber and a contact structure thereof. The contact structure comprises a cathode contact and an anode contact oppositely arranged; the end surface of the cathode contact and the end surface of the anode contact are curve revolution surfaces or curve straight surfaces mutually corresponding, and end surfaces transit smoothly. The contact structure can increase end surface contact areas, promote arcs to convert into a diffusion state, increase contacting areas of contacts, arcing areas and back-arc condensation remaining plasma and metal steam areas when a contact diameter is fixed, and furthermore improve a vacuum explosion chamber cut-off capability, and reduce a vacuum switch size.
Owner:BEIHANG UNIV
Multichannel carbon nanotube sensor and preparation method thereof
InactiveCN101870446AImprove reliabilityImprove stabilityTelevision system detailsPiezoelectric/electrostriction/magnetostriction machinesMetal electrodesNanotube
The invention relates to a multichannel carbon nanotube sensor, which belongs to the technical field of micro-electronics, and a preparation method thereof. The multichannel carbon nanotube sensor comprises a substrate, a lower metal electrode, carbon nanotubes and an upper metal electrode, wherein the substrate is arranged on the bottommost end of the integral structure, the lower metal electrode is arranged on the substrate, a plurality of carbon nanotubes are vertically distributed to form an array, and the two ends of each carbon nanotube are respectively connected with the lower metal electrode and the upper metal electrode to form carbon nanotube conducting channels. The lower metal electrode, the carbon nanotube conducting channels and the upper metal electrode form a plurality of series unit structures. The sensor prepared in the invention can realize up-and-down integration, is compatible with the IC integrated circuit, can be used to manufacture array sensors and realize diversified and integrated manufacture of the devices.
Owner:SHANGHAI JIAO TONG UNIV
Novel high-power module
InactiveCN102446910AImprove mechanical propertiesSmall mechanical propertiesSemiconductor/solid-state device detailsSolid-state devicesSemiconductor chipComputer module
The invention discloses a novel high-power module which comprises a basal body and a shell and is provided with a load connecting element, a semiconductor chip and a scaleboard, wherein the load connecting element is directly connected with the scaleboard; the load connecting element and the scaleboard are arranged on a first main body surface of the basal body; a second main body surface opposite to the first main body surface is provided with a non-metal layer; and the shell is fixed on the basal body and matched with the first main body surface, and the upper part of the load connecting element passes through a groove of the shell. The high-power module provided by the invention has the advantages of improving the signal precision and driving a protective circuit to be simple and stable.
Owner:嘉兴斯达微电子有限公司
Fuse protector base seat of direct-current low-voltage fuse link
InactiveCN103065902AImprove electrical performanceImprove cooling effectEmergency protective devicesElectricityLow voltage
The invention discloses a fuse protector base seat of a direct-current low-voltage fuse link. The fuse protector base seat comprises a base, a wire inlet end current-conducting plate, a wire outlet end current-conducting plate, a pair of sockets, a wire inlet end terminal stud and a wire outlet end terminal stud. A groove used for containing the fuse link is arranged in the center of the base. The wire inlet end current-conducting plate and the wire outlet end current-conducting plate are fixed at two ends of the base in a one-to-one corresponding mode. The pair of sockets are fixed on the inner side of the wire inlet end current-conducting plate and the inner side of the wire outlet end current-conducting plate in a one-to-one corresponding mode. The wire inlet end terminal stud and the wire outlet end terminal stud are installed on the outer side of the wire inlet end current-conducting plate and the outer side of the wire outlet end current-conducting plate in a one-to-one corresponding mode. The edge of one side of the wire inlet end current-conducting plate is further provided with a signal contact. According to the fuse protector base seat, electrical performance of the fuse link is improved, a knife contact fuse link with an indicating device or a knife contact fuse link without an indicating device can be loaded on the fuse protector base seat, and by connecting the fuse link with the signal contact, a user can connect the fuse link to a secondary circuit directly to determine whether the fuse link is fused.
Owner:上海电器陶瓷厂有限公司
Vertical power terminal double-sided heat dissipation power module
PendingCN113658928AImprove cooling effectHigh working reliabilitySemiconductor/solid-state device detailsSolid-state devicesThermodynamicsEngineering
The invention discloses a vertical power terminal double-sided heat dissipation power module, and the powe rmodule comprises a power module body; the power module body comprises a first insulating substrate and a second insulating substrate which are oppositely arranged, and a plurality of chips and conductive connecting blocks which are arranged between the two insulating substrates; the lower surface of the chip is connected with the first insulating substrate through a connecting layer, the upper surface of the chip is connected with a conductive connecting block through a connecting layer and electrically connected with the first insulating substrate through a metal wire, and the upper surface of the conductive connecting block is connected with the second insulating substrate through a connecting layer; a power terminal and a control terminal are arranged on the first insulating substrate, an arc-shaped hole is formed in a weld leg, connected with the first insulating substrate, of the power terminal, and one end, far away from the arc-shaped hole, of the power terminal is bent towards one side of the first insulating substrate and is perpendicular to the first insulating substrate, so that the power terminal becomes a vertical power terminal; and the first insulating substrate and the second insulating substrate are subjected to injection molding processing through an epoxy plastic package body.
Owner:SHANGHAI DAOZHI TECH CO LTD
Microsecond electronic switch apparatus
The invention provides a microsecond electronic switch apparatus. The microsecond electronic switch apparatus comprises two IGBTs, two diodes, five heat dissipation plates, two press-mounting plates,an absorption capacitor and a direct-current bus capacitor group, thereby finally implementing microsecond turn-off. According to the microsecond electronic switch apparatus, the microsecond protection can be implemented; moreover, a protected current grade is relatively high and can be up to a grade of a current flowing through a device in a testing process; the microsecond electronic switch apparatus can implement the effects that when the protection switch is turned off, an overvoltage is relatively low, the voltage equalization performance is good, and an output voltage and an output current can be improved to a required range; not only is the cost saved, but an inductance value of a parasitic inductor also is reduced; and the diode and the absorption capacitor are arranged, so the possibility that the device is broken through by the overvoltage is avoided, and the voltage equalization is implemented via a static partial voltage of an equalization resistor.
Owner:GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
Integrated MOSFET and Schottky device
A power semiconductor device that includes a trench power MOSFET with deep source field electrodes and an integrated Schottky diode.
Owner:INFINEON TECH AMERICAS CORP
Rapid interface device for conveying super-heavy current
ActiveCN108321609AIncrease the current levelEasy to fixCoupling device detailsElectrical connectionWorking environment
The invention discloses a rapid interface device for conveying super-heavy current, comprising a seat body whose sidewall is provided with a horizontal plug. The bottom part and the top part of the horizontal plug are respectively provided with a first electrode block and a third electrode block. The bottom part of the third electrode block is provided with a first arc guiding groove. The top partof the first electrode block is provided with a second arc guiding groove. The bottom part of the seat body is provided with a longitudinal cavity communicated with the horizontal plug, and the longitudinal cavity is provided with a movable clamping block and a spring seat. The bottom part of the movable clamping block is provided with an inserting rod. The top part of the spring seat is providedwith an inserting hole matching with the inserting rod. The inserting rod is sleeved by a belleville spring. The top part of the movable clamping block is connected to the first electrode block. Twosides of the spring seat are respectively provided with a connecting shaft extending outside of first waist-type holes at two sides of the seat body. Two sides of the seat body are respectively provided with a hoisting structure connected to the connecting shaft. The invention is advantageous in that plugging is rapid and convenient, connecting is stable; the device can be suitable for hostile working environment in the field; safety and practicality of the device can be improved; the device can be widely applied in the field of electrical connection.
Owner:湖南省军民融合装备技术创新中心 +1
Current-perpendicular-to-the-plane structure magnetoresistive element and head slider
InactiveUS7355825B2Increase the current levelReduce sensitivityNanomagnetismMagnetic measurementsMagnetic reluctanceMagnetization
A magnetoresistive film is interposed between domain controlling films in a current-perpendicular-to-the-plane (CPP) structure magnetoresistive element. The domain controlling films are designed to establish a first biasing magnetic field of a first intensity across the magnetoresistive film along the front end of the magnetoresistive film and a second biasing magnetic field of a second intensity larger than the first intensity along the rear end of the magnetoresistive film. The second biasing magnetic field serves to establish a single domain property within the magnetoresistive film along the rear end. Although the first biasing magnetic field acts in the same direction as the current field at a position near the front end of the magnetoresistive film, the magnetization is allowed to reliably rotate near the front end. A sensing current having a larger current value can be supplied to the magnetoresistive film. The magnetoresistive film exhibits a sufficient sensitivity.
Owner:FUJITSU LTD
High-current DC contactor
ActiveCN108091522AEffective insulation distanceIncrease the current levelElectromagnetic relay detailsContact mechanismBreaking capacity
The invention discloses a high-current DC contactor comprising two sets of DC contact bodies and a set of electromagnetic driving mechanism. A DC contact mechanism includes an arc extinguishing chamber (1), a magnetic blowing system (2), a spring system (3), a magnetic conducting plate (6), a static contact (7), a moving contact (8), a conductive copper row (9), a support base (10), a micro switchassembly (11), and a contactor shell (12). The electromagnetic drive mechanism includes a guide driving block (4), an electromagnet (5) and a base (18). A form of a snap-type electromagnet which is often used in existing products on the market is changed, a suction-type electromagnet is used as a power element, with a redesigned driving system, the space is saved as much as possible in the same breaking capacity, the requirements of a railway locomotive for dimensions are satisfied, the effective insulation distance of a contactor is ensured, and the current level of the contact is improved.
Owner:BEIJING CED RAILWAY ELECTRIC TECH
a shunt
InactiveCN105319424BLow sampling voltageSmall thermal volumeVoltage/current isolationManganinEngineering
The invention relates to a shunt which comprises a shunt body and sampling columns. The shunt body comprises a manganese-copper plate in the center position and a first red copper plate and a second red copper plate which are symmetrically arranged at the two sides of the manganese-copper plate. The first red copper plate is provided with the first sampling column and at least one current input hole. The second red copper plate is provided with the second sampling column and at least one current output hole. The first red copper plate, the second red copper plate and the manganese-copper plate are identical in thickness and length, wherein the thickness is 2mm-12mm. Width of the manganese-copper plate is 5mm-15mm. Width of the first red copper plate and width of the second red copper plate are 40mm-60mm. The sum of the height of the sampling columns and thickness of the shunt body is not greater than H. The beneficial effects of the shunt are that the shunt formed by the red copper plates and the manganese-copper plate via welding has relatively-low sampling voltage, so that power consumption is greatly reduced; and meanwhile, sampling detection precision is enhanced through the sampling columns, and thus the domestic blank is filled.
Owner:SHANXI XINGYONGMING INSTR
Slotless brushless grooved drum permanent magnet synchronous motor comprising special controller and rotary transformer
InactiveCN111697782AReduce low-speed jitterHigh precisionAssociation with control/drive circuitsWindings insulation shape/form/constructionElectric machinePermanent magnet synchronous motor
The invention provides a slotless brushless grooved drum permanent magnet synchronous motor comprising a special controller and a rotary transformer, and relates to the field of motors. The slotless brushless groove drum permanent magnet synchronous motor with the special controller and the rotary transformer is provided, the motor comprises a motor shell, a motor rear cover and a motor front cover, wherein the motor front cover and the motor rear cover are fixedly connected with a front end and a rear end of the motor shell respectively, a rear boss is fixedly arranged at the position, closeto the center of a side wall of a front end, of the motor rear cover, a front boss is fixedly arranged at the position, close to the center of a side wall of the rear end, of the motor front cover, afront bearing is arranged at an inner end of a front boss, a rear bearing is arranged at an inner end of a rear boss, and a main shaft is rotationally arranged at an inner end of the front bearing. The slotless brushless groove drum permanent magnet synchronous motor is advantaged in that by using the slotless and brushless grooved drum permanent magnet synchronous motor with the special controller and the rotary transformer, overall structure complexity of the motor can be reduced, production is convenient, and working efficiency, working precision and the overload capacity of the motor are improved.
Owner:深圳市吉胜华力科技有限公司
Moving contact clamping structure for circuit breaker
InactiveCN106653412ALower resistanceLower internal resistanceContactsInternal resistanceCircuit breaker
The invention discloses a moving contact clamping structure for a circuit breaker. The moving contact clamping structure comprises a conductive bracket and two moving contacts; the two moving contacts are mounted on the conductive bracket through a rotary shaft, wherein an elastic ring which can be deformable radially is mounted on the rotary shaft between the two moving contacts; a limiting part used for limiting the two moving contacts is mounted on the conductive bracket; and the outer side walls of the two moving contacts are in tight contact with the conductive bracket in a plane-to-plane manner through radial elastic force generated by the elastic ring. The moving contact clamping structure for the circuit breaker is simple in structure, low in cost, stable and reliable in clamping, capable of remarkably reducing dimensions of the elastic part under the premise of not reducing the clamping force of the moving contact structure, so as to reserve more space to enlarge sectional areas of conductive loops of the moving contacts and other parts, and capable of lowering internal resistance of the loop and laying foundation for improving the current level of a shell frame.
Owner:WUXI XINHONGTAI ELECTRIC TECH CO LTD
A power semiconductor module packaging structure
ActiveCN110400794BIncrease the current levelImprove assembly efficiencySemiconductor/solid-state device detailsSolid-state devicesEngineeringControl circuit
Owner:ZHUZHOU CRRC TIMES SEMICON CO LTD
Methods for operating valves
ActiveCN108869070BReduce closing noiseShort strokeOperating means/releasing devices for valvesElectrical controlSolenoid valveElectric current flow
The invention relates to a method for actuating a valve with a solenoid valve drive through which an electric current (1) is conducted to open, close and hold the valve in an open position or in a closed position, The method has at least the following steps: a) receiving an opening signal, b) in response to the received opening signal, varying the current (1) conducted by the valve driver in the pattern of a first current signal (2) to open The valve, c) receives a closing signal, and d) in response to the received closing signal, alters the current (1) directed by the valve driver in the pattern of a second current signal (3) to close the valve , wherein the second current signal (3) has at least two changes of the current (1) separated in time from each other.
Owner:ROBERT BOSCH GMBH
A high current DC contactor
ActiveCN108091522BEffective insulation distanceIncrease the current levelElectromagnetic relay detailsEngineeringContact mechanism
The invention discloses a high-current DC contactor comprising two sets of DC contact bodies and a set of electromagnetic driving mechanism. A DC contact mechanism includes an arc extinguishing chamber (1), a magnetic blowing system (2), a spring system (3), a magnetic conducting plate (6), a static contact (7), a moving contact (8), a conductive copper row (9), a support base (10), a micro switchassembly (11), and a contactor shell (12). The electromagnetic drive mechanism includes a guide driving block (4), an electromagnet (5) and a base (18). A form of a snap-type electromagnet which is often used in existing products on the market is changed, a suction-type electromagnet is used as a power element, with a redesigned driving system, the space is saved as much as possible in the same breaking capacity, the requirements of a railway locomotive for dimensions are satisfied, the effective insulation distance of a contactor is ensured, and the current level of the contact is improved.
Owner:BEIJING CED RAILWAY ELECTRIC TECH
Multichannel carbon nanotube sensor and preparation method thereof
InactiveCN101870446BImprove reliabilityImprove stabilityTelevision system detailsImpedence networksCarbon nanotubeUnit structure
Owner:SHANGHAI JIAOTONG UNIV
Ultra-fast piezo-actuated mechanical switch and method of operation for use in medium-voltage direct current systems
ActiveCN110828231BRapid disconnectionCompact and lightweightHigh-tension/heavy-dress switchesAir-break switchesEngineeringElectrical drive
The invention discloses an ultra-fast piezoelectric driving mechanical switch used in a medium-voltage direct-current system and a working method. The mechanical switch comprises an insulating shell,a transmission mechanism, a frame connecting rod, a contact connecting rod, a stroke amplifying frame, an element fixing block, a piezoelectric driving stack, a signal lead terminal, a contact fixingplate, a spherical contact, an outer conductor, a wiring terminal and a shell spherical contact. The mechanical switch adopts a piezoelectric driver as a driving source, and is suitable for a medium-voltage direct-current power supply system. When a short-circuit fault occurs in the system, a circuit breaker signal is transmitted to a circuit breaker signal wiring terminal, the piezoelectric driver receives a voltage signal and deforms, the transmission mechanism is driven by a pull rod to separate the contacts so as to achieve a breaking effect, and the transmission mechanism plays a role intransmission and displacement amplification at the same time. Compared with a common circuit breaker, the whole breaking process is high in response speed, and the volume is compact and small.
Owner:XI AN JIAOTONG UNIV
Power unit and multi-phase electric actuator using same
InactiveCN104734529AEliminate Current Sharing IssuesIncrease the current levelAc-ac conversionDc-ac conversion without reversalEngineeringActuator
It provides a power unit including: a multi-phase bridge rectifier, having inputs being electrically connectable to a source of multi-phase AC power; a smoothing filter, being connected to an output of said multi-phase bridge rectifier; and a multiple of H-bridge inverters; wherein: input terminals of said multiple of H-bridge inverters are electrically connected in parallel with said smoothing filter; and output terminals of said multiple of H-bridge inverters are electrically connected in parallel and are adapted for providing a single-phase output to an AC load. By having the power unit, it has one three-phase bridge rectifier thus it is helpful for eliminating the current sharing issues occurring among more than one three-phase bridge rectifiers. In addition, by having three H-bridge inverters electrically connected in parallel in the power unit, the current rate for the power unit is increased as compared with that with one H-bridge inverter. Preferably, a multiple of pre- charging resistors can respectively arranged between said output of said respective one of said multiple of legs of said multi-phase bridge rectifier and said respective one of said multiple of capacitor banks.
Owner:ABB TECH AG
An Inductive Energy Storage Pulse Power Supply for Electromagnetic Emission
ActiveCN104617807BStrong current amplification capabilityIncrease the current levelEngineeringElectromagnetic pulse
The invention relates to an inductive energy storing type pulse power supply for electromagnetic emission, and belongs to the technical field of electromagnetic emission. The pulse power supply comprises a primary power supply Us, a first inductor L1, a second inductor L2, a first thyristor T1, a second thyristor T2, a third thyristor T3, a fourth thyristor T4, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first capacitor C1, a second capacitor C2 and n inducting modules; each inducting module comprises an inductor, a thyristor, a plurality of diodes and a capacitor. According to the inductive energy storing type pulse power supply for electromagnetic emission, the inductors can be highly coupled; the inductor current is multiplied according to the magnetic flux conservation principle and can be also amplified due to series charging and parallel discharging of each inductor, and therefore, high-current multiplying is achieved; the variation rate of the current can be reduced to lower down the withstand voltage of a main pipe; meanwhile, the inductive energy storing type pulse power supply has the advantages of being high in energy storing density, high in structure expandability, and suitable for electromagnetic emission.
Owner:TSINGHUA UNIV
Ultra-fast piezoelectric driving mechanical switch used in a medium-voltage direct-current system and working method
ActiveCN110828231ARapid disconnectionCompact and lightweightHigh-tension/heavy-dress switchesAir-break switchesElectrical conductorElectrical drive
The invention discloses an ultra-fast piezoelectric driving mechanical switch used in a medium-voltage direct-current system and a working method. The mechanical switch comprises an insulating shell,a transmission mechanism, a frame connecting rod, a contact connecting rod, a stroke amplifying frame, an element fixing block, a piezoelectric driving stack, a signal lead terminal, a contact fixingplate, a spherical contact, an outer conductor, a wiring terminal and a shell spherical contact. The mechanical switch adopts a piezoelectric driver as a driving source, and is suitable for a medium-voltage direct-current power supply system. When a short-circuit fault occurs in the system, a circuit breaker signal is transmitted to a circuit breaker signal wiring terminal, the piezoelectric driver receives a voltage signal and deforms, the transmission mechanism is driven by a pull rod to separate the contacts so as to achieve a breaking effect, and the transmission mechanism plays a role intransmission and displacement amplification at the same time. Compared with a common circuit breaker, the whole breaking process is high in response speed, and the volume is compact and small.
Owner:XI AN JIAOTONG UNIV
Elastic sub-module and modular crimping type semiconductor module
PendingCN113725179AReduce thermal resistanceImprove power density and current levelSemiconductor/solid-state device detailsSolid-state devicesPhysicsElectrically conductive
The invention discloses an elastic sub-module and a modular crimping type semiconductor module. The elastic sub-module comprises a conducting strip, an insulating elastic piece and a conducting plate, the conducting strip is a bent conducting strip which is bent to be provided with a plurality of grooves, the conducting strip is clamped at the upper end of the insulating elastic piece through the grooves, and the lower end of the insulating elastic piece is connected with the conducting plate; the modular crimping type semiconductor module comprises a module collector plate, a chip sub-module, a module emitting polar plate and an elastic sub-module; the chip sub-module comprises a chip, a collector conductor and an emitter conductor; and the module collector electrode plate, the collector electrode conductor, the chip, the emitter electrode conductor, the elastic sub-module and the module emitter electrode plate are sequentially connected from top to bottom. The module has the advantages that the thermal resistance can be further reduced and the power density and the current level of the module can be improved through a chip modularization form; and the modularization of the chip subunits can also reduce the material cost and reduce the processing procedures.
Owner:南瑞联研半导体有限责任公司
Method for Actuating a Valve
ActiveCN108869070AReduce closing noiseShort strokeElectrical controlOperating means/releasing devices for valvesMagnetic valveEngineering
A method for actuating a valve with a magnetic valve drive, through which electric current(1) is passed to open the valve, to close the valve, and to hold the valve in an open or closed position, includes a)receiving an opening signal. The method further includes b)varying the electric current that is passed through the valve drive as a first current signal(2) to open the valve in response to thereceived opening signal. The method further includes c)receiving a closing signal and varying the electric current that is passed through the valve drive as a second current signal(3) for closing thevalve in response to the received closing signal. The second current signal(3) has at least two variations of the electric current(1) at separate times.
Owner:ROBERT BOSCH GMBH
Automatic mine switch
InactiveCN103456549AWork lessIncrease the current levelHigh-tension/heavy-dress switchesAir-break switchesEngineeringContact system
The invention discloses an automatic mine switch. The automatic mine switch comprises a plastic base, a plastic upper cover, a wiring assembly, a contact system, an operation mechanism, an arc extinction mechanism and a trip device, wherein the wiring assembly, the contact system, the operation mechanism, the arc extinction mechanism and the trip device are arranged on the base. The contact system comprises three fixed contacts and three moving contacts. The operation mechanism drives the three moving contacts to achieve synchronous switch-on-off movements. The arc extinction mechanism comprises three arc extinction covers which are matched with the three moving contacts. The wiring assembly comprises a first wire inlet terminal connected with the first fixed contact, a second wire inlet terminal connected with the second fixed contact, a third wire inlet terminal connected with the third fixed contact, a first wire outlet terminal connected with the first moving contact, a second wire outlet terminal connected with the second moving contact, and a third wire outlet terminal connected with the third moving contact. The first wire outlet terminal is in short circuit connection with the second wire outlet terminal, and the second wire inlet terminal is in short circuit connection with the third wire inlet terminal. Compared with a traditional product, the automatic mine switch greatly improves grades of rated working voltage and current.
Owner:JUDA MINING IND
Quick interface device for delivering ultra-high current
ActiveCN108321609BIncrease the current levelEasy to fixCoupling device detailsElectricityElectrical connection
Owner:湖南省军民融合装备技术创新中心 +1
Inductance energy storage type pulse power supply used for electromagnetic emission
ActiveCN102594195BStrong current amplification capabilityGuaranteed normal operationHemt circuitsPulse power supply
Owner:TSINGHUA UNIV
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