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49results about How to "Prevent reverse connection" patented technology
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Connector for solar battery module
InactiveCN101057375APrevent reverse connectionIncorrect coupling preventionPhotovoltaicsElectrical polarityEngineering
Positive and negative poles of a solar cell module (10) are split to take out a pair of positive and negative cables (11), and a two-pole connector (20) where terminals (15) are connected is integrally formed at the forward end of each cable (11). The terminals (15) in the two-pole connector (20) arranged on one side of the solar cell module (10) are plugs for the positive pole and negative pole, and the terminals (15) in the two-pole connector (20) arranged on the other side of the solar cell module (10) are sockets for the positive pole and negative pole. Both two-pole connectors (20) on the plug side and socket side arranged between adjacent solar cell modules (10) are each provided with a projection section (37) as a reverse connection preventing part. The projection sections (37) allow the connection between the connectors (20) when the positive and negative poles of one connector (20) have the same polarilities as those of the other, and prevent the connection when the positive and negative poles of one connector (20) have the different polarities from those of the other.
Owner:SUMITOMO WIRING SYST LTD
Solar Cell Module Connector
InactiveUS20080283111A1Prevent reverse connectionOccurrence of erroneousPV power plantsCoupling device detailsElectrical polaritySolar cell
The present invention includes two pairs of positive and negative cables are led out by dividing a pair of positive and negative terminals of a solar cell modules, and dipole connectors to which terminals are connected are formed on ends of the cables. The terminals in the dipole connector disposed on one side of the solar cell module form positive and negative plugs, while the terminals in the other dipole connector disposed on the other side of the solar cell module form positive and negative sockets. The cables include an inverse connection preventing portion which allows connection between the dipole connectors on a plug and socket side disposed between each adjacent solar cell modules when the polarities of the negative and positive terminals are the same, but which restricts connection therebetween when the polarities of the negative and positive terminals differ from each other.
Owner:SUMITOMO WIRING SYST LTD
Anti-reverse-connection anti-backflow battery charging protection circuit
ActiveCN106712207APrevent reverse connectionReduce lossElectric powerReverse polarity correctionCurrent limitingBattery charge
The invention discloses an anti-reverse-connection anti-backflow battery charging protection circuit, which comprises a voltage comparison module, an execution module, and an anti-reverse-connection control module, wherein two ends of the anti-reverse-connection control module are connected with a negative electrode of a power supply and a negative electrode of a battery; the voltage comparison module comprises a comparator, a voltage acquisition circuit, a comparator power supply circuit and a current-limiting protection resistor; the execution module is connected with a charge management module, the negative electrode of the power supply, and a source electrode and a grid electrode of a first MOS (Metal Oxide Semiconductor) tube. The anti-reverse-connection anti-backflow battery charging protection circuit provided by the invention has the characteristics of low loss, simple structure, practicability, convenience, and better expandability, can prevent the power supply from being reversely connected with the battery, and can also prevent the generation of anti-backflow current when the voltage of the battery is higher than the voltage of the input power supply.
Owner:CHANGCHUN INST OF TECH
Power supply protection device
ActiveCN104467055APrevent reverse connectionDc network circuit arrangementsElectric powerControl circuit
Disclosed is a power supply protection device. The power supply protection device comprises two or more isolating circuits and a control circuit. The two or more isolating circuits are connected between all charging sources and charging circuits and are used for preventing the inverse connection of all the charging sources. The control circuit is connected between the charging sources and the isolating circuits and is used for disconnecting charging routes to allow only one charging route to conduct charging when two or more charging routers are connected for charging at the same time. According to the power supply protection device, the isolating circuit connected between the charging sources and the charging circuits is used for conducting isolation protection on each charging route, when the number of the charging routes is larger than one, the control circuit is used for conducting judge selection, only one charging route is reserved, and therefore the charging circuits can be protected.
Owner:ZTE CORP
Central air-conditioning temperature zone controller
InactiveCN106524450AReduce negative voltageReduce shockMechanical apparatusSpace heating and ventilation safety systemsEngineeringSignal transition
The invention discloses a central air-conditioning temperature zone controller which is characterized by comprising a power module, a temperature acquisition module, a control module, a signal conversion module, an on-off valve control module and a communication module. The temperature acquisition module is connected with the control module. The control module is further connected with the signal conversion module, the on-off valve control module and the communication module. The signal conversion module is further connected with the on-off valve control module. The power module supplies power to the temperature acquisition module, the control module, the single conversion module, the on-off valve control module and the communication module. The central air-conditioning temperature zone controller is wide in application range and high in control precision.
Owner:山东金洲科瑞节能科技有限公司
Power source reversal connection prevention circuit
InactiveCN105743076APrevent reverse connectionEasy to manufactureEmergency protective circuit arrangementsCapacitancePower flow
The invention discloses a power source reversal connection prevention circuit. The power source reversal connection prevention circuit comprises an MOS tube Q1, a resistor R1, a resistor R2, a capacitor C1 and a Zener diode D1, wherein the resistor R2 and the Zener diode D1 are connected in parallel, a negative electrode end of the Zener diode D1 of the parallel circuit is connected in series with the resistor R1, a grid electrode of the MOS tube Q1 is connected with the resistor R2 and a cathode of the Zener diode D1 of the Zener diode D1 parallel circuit, a source electrode of the MOS tube Q1 is connected with the resistor R2 and an anode of the Zener diode D1 of the Zener diode D1 parallel circuit, one end of the capacitor C1 is connected with a drain electrode of the MOS tube Q1, the other end of the capacitor C1 is connected with the other end of the resistor R1, the end of the capacitor C1 connected with the resistor R2 is connected with a positive electrode of a power source, the end of the drain electrode of the MOS tube Q1 connected with the capacitor C1 is connected with a negative electrode of the power source, and the whole circuit is conducted, if reverse connection, the power supply source can not be conducted. The power source reversal connection prevention circuit is applied to heavy-current circuits, production cost is greatly reduced, and reverse circuit connection can be effectively prevented.
Owner:ANHUI ACT BLUE ENVIRONMENTAL PROTECTION CO LTD
Power supply port protective circuit
ActiveCN106410740AAvoid damagePrevent reverse connectionEmergency protective arrangements for limiting excess voltage/currentArrangements responsive to undervoltageOvervoltageOvercurrent
The invention provides a power supply port protective circuit. The power supply port protective circuit comprises a first low-loss power device, a second low-loss power device, a reverse-connection protective circuit, an undervoltage protective circuit, an overvoltage protective circuit and an overcurrent protective circuit, wherein the first end of the first low-loss power device is connected with a power supply input end while the second end of the first low-loss power device is connected with the first end of the second low-loss power device; the second end of the second low-loss power device is connected with the input end of a to-be-protected power supply port; the reverse-connection protective circuit is connected with the third end of the first low-loss power device and the power supply input end separately; and the undervoltage protective circuit, the overvoltage protective circuit and the overcurrent protective circuit are all connected with the second end of the first low-loss power device, the second end of the second low-loss power device and the third end of the second low-loss power device separately. By adoption of the abovementioned way, conditions of reverse connection, overvoltage, undervoltage and overcurrent and the like of the power supply port can be avoided, thereby improving operational reliability of the system.
Owner:CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD +1
Control system for novel mining lithium iron phosphate switched reluctance electric locomotive
InactiveCN102355180AImprove linearityGood stabilityBatteries circuit arrangementsSingle motor speed/torque controlContactorCapacitance
The invention discloses a control system for a novel mining lithium iron phosphate switched reluctance electric locomotive. The system comprises a battery pack management device, a switched reluctance electric locomotive control device and a charger which are connected with an explosion-proof plug respectively. The switched reluctance electric locomotive control device comprises a chopper controller, a photoelectric setter, a power conversion module, three Hall current sensors, six insulated gate bipolar transistors, a charging capacitor, a direct current contactor, a motor A-phase winding terminal block, a motor B-phase winding terminal block, a motor C-phase winding terminal block and two paths. The system has the advantages of high control accuracy and long equipment service life.
Owner:SHANDONG UNIV OF SCI & TECH
Tool capable of conveniently testing motor torque
PendingCN108362413ASimple structureNo correction requiredWork measurementTorque measurementTorque transmissionControl theory
The invention discloses a tool capable of conveniently testing motor torque. A hollow weight axle tube is rotationally connected to a fixed connecting base, one end of the weight axle tube is providedwith a torque testing assembly for testing motor output torque, a plurality of centers elastically sliding in the axial direction are arranged inside the weight axle tube, a testing positioning auxiliary mechanism which can perform positioning and pressing fixing on a motor body when a motor output shaft stretches into the weight axle tube is arranged at the other end side of the weight axle tubeon the fixed connecting base, when the motor output shaft stretches into the weight axle tube, the end of the motor output shaft abuts against and presses some centers to slide in the axial direction, the side faces of the other centers abut against the flat structure of the motor output shaft so as to transmit torque to enable the weight axle tube to rotate along with rotation of the motor output shaft, then, torque transmission can be achieved, and the tool has the advantages of being simple in structure, needing no correction, and being convenient to operate.
Owner:哈特盈致(中山)智能科技有限公司
Smart water cup for children
PendingCN110367773AUnderstand the daily drinking water statusEfficient detectionDwelling equipmentDrinking vesselsSmart waterDisplay device
The invention discloses a smart water cup for children. The smart water cup for children includes a cup cover and a cup body connected to the cup cover; the cup cover includes a hemispheric hollow-structured upper cover, and a cup cover body hinged to the upper cover; and the cup body includes a middle cover hinged to the upper cover, a cup cover lower shell with one end connected to the middle cover and the other end in threaded connection with the cup body, the middle cover arranged between the upper cover and the cup cover lower shell, a through hole arranged in the center of the middle cover and communicating the cup body, a control main board arranged in the middle cover, a control circuit installed on the control main board, and a temperature probe, a flowmeter, a horn, a power source and a display device connected to the control circuit. The smart water cup for children has simple principles and is easy to realize. The flowmeter can be used to obtain children's daily water drinking situation conveniently, so as to provide data support for subsequent management of children's water drinking and facilitate the cultivation of healthy water drinking habits of children. The smartwater cup for children has high practical value and promotion value.
Owner:THE SMALL MONSTER (SHENZHEN) TECH CO LTD
Control circuit capable of preventing supervoltage and preventing surge voltage
InactiveCN101950955APrevent damage to the loadGuaranteed to workArrangements responsive to excess currentEmergency protective arrangements for limiting excess voltage/currentCapacitanceLower limit
The invention discloses a control circuit capable of preventing supervoltage and preventing surge voltage. In the invention, the control of output voltage is achieved through controlling opening / closing of a field-effect tube; when the output voltage is higher than the upper limit of a set voltage, the grid potential of the field-effect tube is drawn down, the field-effect tube is in a closed state, and at the moment, load consumes charges stored in a capacitor; and when the output voltage is lower than the lower limit of the set voltage, the grid potential of the field-effect tube is drawn up, the field-effect tube is in a conducting state, and at the moment, current input through the field-effect tube supplies power for the load and charges the capacitor. The invention can prevent the load from being damaged by continuous high voltage and surge from, and simultaneously, continuous power supply of the load can be ensured through the capacitor when the field-effect tube is closed. At the same time, the invention can regulate a circuit according to the rated voltage of the load, so that the output voltage is matched with the rated voltage of the load to be applicable to the load with different rated voltages.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Anti-reverse-connection power supply protection circuit, power supply management system and robot
InactiveCN111342442APrevent reverse connectionReduce conduction voltage dropEmergency protective circuit arrangementsHemt circuitsControl theory
The embodiment of the invention relates to the technical field of power supplies, and discloses an anti-reverse-connection power supply protection circuit, a power supply management system and a robot. The power supply protection circuit comprises: an NMOS transistor and a first resistor; the grid electrode of the NMOS transistor is connected with the positive electrode of a direct-current power supply through the first resistor; the drain electrode of the first resistor is connected with the negative electrode of the direct-current power supply, the source electrode of the first resistor is connected with the negative electrode of a load, the first resistor provides bias voltage for the NMOS tube, and the direct-current power supply and the load are controlled to be disconnected by applying the switching characteristic of the NMOS tube when the direct-current power supply is reversely connected. Through the mode, the embodiment of the invention can effectively prevent the reverse connection of the power supply, reduces the conduction voltage drop, and is low in cost and power consumption.
Owner:CLOUDMINDS SHANGHAI ROBOTICS CO LTD
Detection circuit and power supply circuit
ActiveCN110133374APrevent reverse connectionFault location by conductor typesImpedence measurementsVoltage sourceGrounding resistance
An embodiment of the application provides a detection circuit and a power supply circuit, relates to the field of power, and can detect a ground resistance of a cable on-line in a power supply systemhaving a neutral ground point. The solution is that the detection circuit comprises a variable voltage circuit and a current measuring circuit, wherein the variable voltage circuit comprises a first voltage source and a second voltage source, one end of the first voltage source is grounded through the current measuring circuit and the other end is used for connecting a first cable, the first cableis connected to the negative pole of a first diode in the power supply circuit, the positive pole of the first diode is connected to the positive output end of the power supply circuit, and the firstvoltage source is used to make the output current of the positive output end change to zero; one end of the two voltage source is grounded through the current measuring circuit and the other end is used for connecting a second cable, the second cable is connected to the positive pole of a second diode in the power supply circuit, the negative pole of the second diode is connected to the negativeoutput end of the power supply circuit, and the second voltage source is used to make the output current of the negative output end change to zero. The embodiment of the application is used for measuring ground resistances.
Owner:HUAWEI TECH CO LTD
Surge suppression power supply protection circuit
InactiveCN111030071APrevent reverse connectionReduce the impactEmergency protective arrangements for limiting excess voltage/currentIn vehicleVoltage range
The present invention discloses a surge suppression power supply protection circuit. The circuit comprises a power supply reverse connection prevention circuit, a low-voltage turn-off circuit and a high-voltage suppression circuit. The power supply reverse connection prevention circuit can prevent the reverse connection of the power supply, when the input voltage surge exceeds a set output voltage, the output voltage can still maintain the set output voltage to protect a post-stage circuit. A window voltage range value through which a power supply voltage passes is set through the low-voltageturn-off circuit and the high-voltage suppression circuit, the voltage in the set window range can pass, the circuit output is 0 when the voltage is lower than a lower limit value, and the output voltage is a set upper limit voltage when the voltage is higher than an upper limit value. Compared with an existing power supply protection integrated circuit, the working voltage of the circuit does notneed to be obtained from an input power supply, the influence on the input power supply is small, the circuit belongs to a micro-power-consumption circuit, after a rear-stage DC / DC stops working, theshunting effect of the whole circuit on the input power supply is very small, and a vehicle-mounted battery can be protected when the circuit is applied to an automobile.
Owner:WUHAN YANGTZE COMM ZHILIAN TECH
Integrated rotary power taking socket, wall-type extension socket wiring rail and light rail-type extension socket
PendingCN111193160ASimple structureEasy to operateCoupling contact membersCouplings bases/casesElectric power transmissionLight rail
The invention relates to the technical field of sockets, in particular to an integrated rotary power taking socket, a wall type extension socket wiring rail and a light rail type extension socket. According to the wall type extension socket wiring rail, an power taking arm based on an integrated rotary power taking socket., the distance between a first limiting frame and a second limiting frame isdesigned to be matched with the width of the power taking arm, the heights of the first limiting frame and the bottom plane are designed to be matched with the heights of the two sides of the power taking arm, and a strip-shaped groove in the middle of the designed bottom plane is matched with a ground wire connecting end of the integrated rotary power taking socket, so the socket is guided to becorrectly inserted at the first moment, rotation is performed then by taking the ground wire connecting end as a circle center, the two sides of the power taking arm are guided to reach the power taking position at the next moment, under the elastic action of the elastic live wire power taking assembly, the elastic zero wire power taking assembly and the elastic ground wire connecting assembly ofthe socket, the live wire power taking end and the zero wire power taking end are firmly connected with the first electric connecting piece and the second electric connecting piece in a face-to-facemode, and good power transmission between the wiring rail and the power taking socket is guaranteed.
Owner:惠州市加迈电器有限公司
WIFI module test method and test system
InactiveCN108495326APrevent reverse connectionImprove test efficiencyWireless communicationTest efficiencyTest fixture
The invention discloses a WIFI module test method and test system. The test system comprises a scanning device, a test device and a wireless network card, wherein the scanning device is used to acquire IMEI information of a target WIFI module and send the IMEI information to the test device; the test device is used to set the IMEI information as a target WIFI hotspot name of the target WIFI module; the wireless network card is used to obtain a WIFI hotspot name list in a set range and send the WIFI hotspot name list to the test device; and the test device is used to determine whether the target WIFI hotspot name is in the WIFI hotspot name list, and if yes, the test device determines that the target WIFI module is successfully opened. According to the scheme of the invention, a mobile network of a wireless communication module can be converted into a WIFI signal, and thus the test efficiency can be improved, and the phenomenon of misjudgment can be reduced; and meanwhile, the problem of reverse connection between a test fixture and the WIFI module can be effectively prevented.
Owner:QUECTEL WIRELESS SOLUTIONS
Connector and lamp assembly
PendingCN112803210ASimple structureEasy to installElectric circuit arrangementsCoupling contact membersEngineeringPhysics
The invention discloses a connector. The connector comprises a first box body and a second box body which can be sleeved with each other, two elastic buckling structures extending outwards are arranged on the surfaces of the outer walls of the two sides of the first box body, and clamping hook structures are arranged on the surfaces of the outer walls of the two sides of the second box body respectively. At least two first connectors are arranged in the first box body, and at least two second connectors are arranged in the second box body; the second box body is larger than the first box body in size and can be sleeved on the first box body; and when the first box body is sleeved with the second box body, the first connector is connected with the second connector, and the elastic buckling structure is buckled with the clamping hook structure so that the first box body and the second box body can be connected and fixed. A lamp assembly comprises a plurality of light source assemblies, a power box and a plurality of connectors. The light source assembly is electrically connected with the power box through the connectors. The connector can be used as a power supply connector for assembling and connecting the lamp, is quick to install, facilitates the storage of a power supply circuit, and is integrally simple and attractive after being installed.
Owner:SHENZHEN LIGHT ON TECH CO LTD
Inverted insertion prevention structure for protecting electric appliance
PendingCN114203488AProtection against reverse insertion structureSo as not to damageProtective switch terminals/connectionsEngineeringCircuit breaker
The invention relates to the technical field of electric appliances, in particular to an anti-reverse-plugging structure for protecting an electric appliance, and the structure comprises a switch body which comprises a first plugging part and a second plugging part, and the first plugging part and the second plugging part are symmetrically distributed with respect to an imaginary center line of the switch body; the conductive structure comprises a first conductive part corresponding to the first plugging part and a second conductive part corresponding to the second plugging part; the switch body is also provided with an insertion part, the conductive structure is provided with a protruding part, and the protruding part and the insertion part are matched when the switch body is assembled along a preset direction and are staggered when the switch body is assembled along a non-preset direction; and the preset direction is the direction when the first plugging part corresponds to the first conductive piece. The invention provides an anti-reverse-insertion structure for protecting an electric appliance, which is not easy to reversely connect when a circuit breaker is connected with a cabinet body.
Owner:ZHEJIANG TENGEN ELECTRIC
Compound emergency power supply apparatus used for low-temperature start of vehicle
InactiveCN106451718AImprove reliabilityLow costBatteries circuit arrangementsElectric powerCapacitanceComputer module
The invention discloses a compound emergency power supply apparatus used for low-temperature start of a vehicle. The compound emergency power supply apparatus comprises a lithium ion battery pack, voltage reduction circuits, a supercapacitor group, a voltage boosting circuit, voltage reduction driving circuits, a voltage boosting driving circuit, a main control chip MCU, signal acquisition modules, a 24V voltage output port and a 5V USB voltage output port, wherein the output ends of the signal acquisition modules are all connected with the main control chip MCU; the main control chip MCU is connected with the voltage reduction driving circuits and the voltage boosting driving circuit separately; the voltage reduction driving circuits are connected with the corresponding voltage reduction circuits; the voltage boosting driving circuit is connected with the voltage boosting circuit; the output end of the lithium ion battery pack, the voltage reduction circuit of the supercapacitor group, the supercapacitor group and the input end of the voltage boosting circuit are connected in series in sequence; the voltage reduction circuits are connected with the 24V voltage output port and the 5V USB voltage output port respectively; the output end of the voltage boosting circuit is connected with a vehicle storage battery; and the signal acquisition modules are also connected with the lithium ion battery pack, the supercapacitor group and the vehicle storage battery respectively.
Owner:HEBEI UNIV OF TECH
DC 110V digital quantity acquisition card based on CPCI bus
PendingCN113562022AEfficient collectionMonitoring statusSignalling indicators on vehicleComputer hardwareControl signal
The invention discloses a DC 110V digital quantity acquisition card based on a compact peripheral component interconnect (CPCI) bus, which comprises a self-checking control circuit, a digital quantity conditioning circuit, an optical coupler isolation and acquisition circuit, a three-state buffer, a PCI bridge and a peripheral circuit. The digital quantity conditioning circuit receives relay contact information through an external input port connector; the output end of the digital quantity conditioning circuit is connected with the optical coupler isolation and acquisition circuit; the output end of the optical coupler isolation and acquisition circuit is connected to the PCI bridge through the three-state buffer; the PCI bridge performs data interaction with a CPCI computer through a PCI bus; and the input end of the self-checking control circuit is connected with a control signal of the PCI bridge, and the output end of the self-checking control circuit is connected to the digital quantity conditioning circuit. As an expansion board of a CPCI computer, the DC 110V digital quantity input information of the subway vehicle-mounted relay can be effectively acquired, so that the state of the vehicle-mounted relay is monitored, the fault position can be quickly positioned, and a fault diagnosis effect is achieved.
Owner:SHENYANG RAILWAY SIGNAL
An analog signal output circuit of a central air-conditioning partition controller
ActiveCN106527564BEliminates turn-on voltage dropPrevent reverse connectionElectric variable regulationAnalog signalEngineering
The invention discloses an analog signal output circuit of a central air-conditioning partition controller. The analog signal output circuit of the central air-conditioning partition controller comprises an amplifying circuit and a voltage current switching circuit. A voltage signal is output by a frequency voltage switching circuit, and is output to a switch valve control module through the amplifying circuit and the voltage current switching circuit successively. The analog signal output circuit of the central air-conditioning partition controller has the characteristics of safety, stabilization, long service life, and extensive application range.
Owner:山东金洲科瑞节能科技有限公司
Control system for novel mining lithium iron phosphate switched reluctance electric locomotive
InactiveCN102355180BReduce in quantityPrevent reverse connectionBatteries circuit arrangementsSingle motor speed/torque controlCapacitanceLithium iron phosphate
The invention discloses a control system for a novel mining lithium iron phosphate switched reluctance electric locomotive. The system comprises a battery pack management device, a switched reluctance electric locomotive control device and a charger which are connected with an explosion-proof plug respectively. The switched reluctance electric locomotive control device comprises a chopper controller, a photoelectric setter, a power conversion module, three Hall current sensors, six insulated gate bipolar transistors, a charging capacitor, a direct current contactor, a motor A-phase winding terminal block, a motor B-phase winding terminal block, a motor C-phase winding terminal block and two paths. The system has the advantages of high control accuracy and long equipment service life.
Owner:SHANDONG UNIV OF SCI & TECH
A power protection device
ActiveCN104467055BPrevent reverse connectionDc network circuit arrangementsElectric powerEngineeringControl circuit
Owner:ZTE CORP
Electronic button with safety protection
InactiveCN108648943APerfect security protectionElectric shock preventionElectric switchesEmergency protective devicesEngineeringReverse connection
The invention discloses an electronic button with safety protection. The electronic button comprises a bottom seat plate and an upper cover box, the upper cover box is arranged on the top of the bottom seat plate, the upper cover box is inserted in the bottom seat plate, fixing blocks are symmetrically arranged on one side of the bottom seat plate, and the fixing blocks are embedded in the bottomseat plate and are fixedly connected with the bottom seat plate through screws. According to the electronic button, by the arrangement of a grounding connecting wire, the electrified upper cover box can be connected with the ground to guide the current into the ground, the electric shock on operators is prevented, excellent over-current protection can be well achieved by installing a fuse, the problem that electronic members are subjected to heavy current impact is prevented, electrical appliances are protected, the loss of properties is prevented, an installed diode can prevent reverse connection of connecting wires to further protect the electrical appliances, and the safety protection performance of the electronic button is improved to a further extent.
Owner:夏芳芳
A detection circuit and power supply circuit
ActiveCN110133374BPrevent reverse connectionFault location by conductor typesImpedence measurementsOvercurrentHemt circuits
Owner:HUAWEI TECH CO LTD
An electrode cover and a detachable xenon headlamp
InactiveCN103545626BSimple structureEasy to assembleGas discharge lampsMultiple conductors connectorElectrode insertionEngineering
The invention discloses an electrode sleeve, which includes a conductive sleeve body, an electrode cavity that can be inserted into an electrode is provided in the sleeve body, an electrode insertion port is provided on the upper part of the electrode cavity, and an electrode cavity is provided in the electrode cavity. The side wall is provided with a conductive first elastic extrusion part that is in contact with the electrode, and the outer side of the sleeve is provided with a conductive second elastic extrusion part that is in contact with the outer electrode. The lower part of the sleeve body is provided with a stop card that can be engaged with the external bayonet. The invention aims to provide an electrode cover with excellent contact with the output electrode and input electrode and a good fixation, and a detachable xenon headlamp using the electrode cover with the advantages of anti-breakdown, easy disassembly and installation, safety and stability.
Owner:GUANGZHOU OPLAS ELECTRICAL CO LTD
Current-limiting protection circuit
InactiveCN108233326APrevent reverse connectionPromote recoveryArrangements responsive to excess currentCurrent limitingRectifier diodes
The invention provides a current-limiting protection circuit, which comprises a rectifier diode, a voltage stabilizing diode, a PNP triode, a resistor and a PMOS transistor, wherein a positive electrode of the rectifier diode is connected with an input end of the current-limiting protection circuit, and a negative electrode of the rectifier diode is connected with a positive electrode of the voltage stabilizing diode; a negative electrode of the voltage stabilizing diode is connected with an output end of the current-limiting protection circuit; an emitting electrode of the PNP triode is connected with the negative electrode of the rectifier diode, a collecting electrode of the PNP triode is connected with a grid electrode of the PMOS transistor, and a base electrode of the PNP triode is connected with a drain electrode of the PMOS transistor; a source electrode of the PMOS transistor is connected with the output end of the current-limiting protection circuit; and two ends of the resistor are respectively connected with the emitting electrode of the PNP triode and the drain electrode of the PMOS transistor. The current-limiting protection circuit has the characteristics of high-speed disconnection and easy recovery, and can provide current-limiting protection for any DC circuits.
Owner:CHONGQING CHUANYI AUTOMATION
Control circuit capable of preventing supervoltage and preventing surge voltage
InactiveCN101950955BPrevent damage to the loadGuaranteed to workArrangements responsive to excess currentEmergency protective arrangements for limiting excess voltage/currentCapacitanceLower limit
The invention discloses a control circuit capable of preventing supervoltage and preventing surge voltage. In the invention, the control of output voltage is achieved through controlling opening / closing of a field-effect tube; when the output voltage is higher than the upper limit of a set voltage, the grid potential of the field-effect tube is drawn down, the field-effect tube is in a closed state, and at the moment, load consumes charges stored in a capacitor; and when the output voltage is lower than the lower limit of the set voltage, the grid potential of the field-effect tube is drawn up, the field-effect tube is in a conducting state, and at the moment, current input through the field-effect tube supplies power for the load and charges the capacitor. The invention can prevent the load from being damaged by continuous high voltage and surge from, and simultaneously, continuous power supply of the load can be ensured through the capacitor when the field-effect tube is closed. At the same time, the invention can regulate a circuit according to the rated voltage of the load, so that the output voltage is matched with the rated voltage of the load to be applicable to the load with different rated voltages.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Connector for solar battery module and connection system
InactiveCN100581001CReverse connection preventionPrevent reverse connectionIncorrect coupling preventionPhotovoltaicsElectrical polaritySolar cell
Positive and negative poles of a solar cell module (10) are split to take out a pair of positive and negative cables (11), and a two-pole connector (20) where terminals (15) are connected is integrally formed at the forward end of each cable (11). The terminals (15) in the two-pole connector (20) arranged on one side of the solar cell module (10) are plugs for the positive pole and negative pole, and the terminals (15) in the two-pole connector (20) arranged on the other side of the solar cell module (10) are sockets for the positive pole and negative pole. Both two-pole connectors (20) on the plug side and socket side arranged between adjacent solar cell modules (10) are each provided with a projection section (37) as a reverse connection preventing part. The projection sections (37) allow the connection between the connectors (20) when the positive and negative poles of one connector (20) have the same polarilities as those of the other, and prevent the connection when the positive and negative poles of one connector (20) have the different polarities from those of the other.
Owner:SUMITOMO WIRING SYST LTD
Controller and motor assembly comprising same
ActiveCN111201699ASolve fever problemLow costAssociation with control/drive circuitsWindingsControl theoryMechanical engineering
An embodiment relates to a controller and a motor assembly comprising same, the controller comprising: a substrate; a controller housing disposed on the substrate; a CM filter unit disposed between the substrate and the controller housing; a DM filter unit disposed under the CM filter unit; a controller cover disposed between the substrate and the DM filter unit; a power module unit disposed between the substrate and the controller cover; and a connector unit coupled to the substrate, wherein the power module unit comprises a power module and a mold unit surrounding the power module. Accordingly, the heat generating problem of the power module unit can be resolved.
Owner:LG INNOTEK CO LTD
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