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33results about How to "With thermal protection" patented technology
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Energy-saving power circuit for constant-current drive type cold light LED
InactiveCN105873286AImprove stabilityImprove driving abilityElectrical apparatusElectroluminescent light sourcesReference currentEngineering
The invention discloses an energy-saving power circuit for a constant-current drive type cold light LED. The power circuit is characterized by being mainly composed of a control chip U2, a reference current correcting circuit, a thyristor trigger circuit, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C5, a resistor R9, a constant-current drive circuit and a low-pass filtering circuit, wherein the constant-current drive circuit is connected with the non-dotted terminal and the dotted terminal of a transformer T secondary side induction coil, and the low-pass filtering circuit is connected between the diode rectifier U1 and the transformer T in series. By means of the energy-saving power circuit, filtering processing can be carried out on the voltage and current of the input end, the input voltage and current are more stable, the strength of the filtered voltage and current is adjusted, and movement of electromagnetic waves of the current is kept in a uniform speed state, so that stable working current can be output, and the stability of brightness of an LED lamp is ensured.
Owner:CHENGDU ANGDIJIA TECH CO LTD
Control circuit of multifunctional protection socket
InactiveCN101316038AWith leakage protectionWith overload protectionCoupling device detailsArrangements responsive to excess currentShort circuit protectionEngineering
The invention discloses a control circuit for a multi-functional protection socket, comprising a signal processing chip IC, a zero sequence current transformer L1, a controllable silicon VS1, a releasing coil L5, a rectifier circuit, a testing circuit, an indicator circuit, a piezoresistor RV1 and other resistor-capacitor unit. The control circuit is characterized in that the control circuit also comprises an over-current transformer L2, a recovery coil L4, a controllable silicon VS2, a short circuit coil L3, a temperature switch ST and a piezoresistor RV2. As the invention has the functions of electric leakage protection, over-load protection, over-heat protection, short circuit protection, over-voltage protection, anti-thunder, etc., the control circuit has wider protection range, and can protect the lives and the possessions of people more effectively and safely.
Owner:汲怀利 +1
Integrated electronic system health management module and method for small satellites
InactiveCN108375971AExtend your lifeReduce maintenance costsProgramme controlElectric testing/monitoringElectronic systemsLife time
The invention provides an integrated electronic system health management module and method for small satellites. The system comprises an ADSP-SC589 type DSP 1, a Flash memory 2, an SRAM 3, a PROM 4 and an 82C250 type CAN bus level conversion chip 5. Autonomous fault detection, fault isolation and fault identification of small satellites in orbit operation can be realized, health state determination of a small satellite integrated electronic system is carried out according to the result, and the important reference information is provided for upgrade and improvement of small satellite follow-upsystems. The system is advantaged in that autonomous fault prediction for the small satellites in orbit operation can be realized, a fault source generating a fault, the fault size and the fault generation time are predicted, the basis is provided for self repair of the small satellites, the service life of the small satellites is prolonged, and maintenance cost of the small satellites is reduced.
Owner:HARBIN ENG UNIV
High-precision low-drift integrated voltage reference source circuit
InactiveCN101697087ALow voltage regulationSmall temperature coefficientEmergency protective arrangements for limiting excess voltage/currentElectric variable regulationDistributed circuitVoltage reference
The invention discloses a high-precision low-drift integrated voltage reference source circuit which comprises a PTAT generation circuit (1), a voltage booster circuit (2), a current feedback circuit (3), an overheating protection circuit (4), a heavy-current drive and overcurrent protection current (5), a power supply voltage distributing circuit (6) and an output drive and reverse connection protection circuit (7), wherein the PTAT generation circuit (1) is used for generating PTAT current; the voltage booster circuit (2) is used for boosting PTAT voltage and realizing the starting separation of the circuit; the current feedback circuit (3) is used for stabilizing output voltage and improving the temperature stability of the current of the circuit; the overheating protection circuit (4) is used for the overheating protection of an output pipe; the heavy-current drive and overcurrent protection current (5) is used for adjusting the output voltage of the output pipe during heavy-load current and the overcurrent protection of a transistor in a heavy-current drive circuit; the power supply voltage distributing circuit (6) is used for improving the DC power supply rejection characteristic of output reference voltage; and the reverse connection protection circuit (7) is used for reinforcing the drive capacity of an output reference and the reverse connection protection of the circuit.
Owner:GUIZHOU UNIV
Intelligent vehicle-mounted charger
InactiveCN104092265ABattery protectionShorten charging timeBatteries circuit arrangementsElectric powerVoltage converterMicrophone
The invention discloses an intelligent vehicle-mounted charger. The intelligent vehicle-mounted charger comprises a shell, an integrated control module, a voltage converter, negative-pole elastic buckles, a positive-pole elastic head, an audio interface, a charging data line USB interface, operating buttons, a digital LCD, LED charging indicator lights and a microphone. The integrated control module is mounted in the shell. The voltage converter is mounted in a cavity in the lower portion of the shell. The negative-pole elastic buckles are mounted on the side faces of the lower portion of the shell. The positive-pole elastic head is mounted at the bottom end of the shell. The audio interface and the charging data line USB interface are mounted on the side face of the upper end of the shell. According to the intelligent vehicle-mounted charger, after a vehicle is started, the shell of the vehicle-mounted charger is normally connected with a cigarette lighter socket and the vehicle-mounted charger is powered on, the green light of the LED charging indicator lights flickers to show that charging is normal, the audio interface is connected with a vehicular audio system through a data line, the Bluetooth function of a mobile phone and the Bluetooth function of the vehicle-mounted charger are set to achieve Bluetooth connection, and then the function of vehicle-mounted Bluetooth hands-free calls can be achieved.
Owner:BMZ COMPANY
Intelligent vehicle charger
InactiveCN105762859AWith undervoltage protectionWith thermal protectionBatteries circuit arrangementsElectric powerVoltage converterEngineering
The invention belongs to a field of electric device and specifically provides an intelligent vehicle charger including a shell, an integrated control module, a voltage converter, a negative electrode elastic clip, a position elastic head, an audio interface, a charge data line USB interface, an operation key, an LCD digital display screen, an LED charge indicating lamp and a communication mic.The integrated control module is mounted in the shell. The voltage converter is mounted in a lower part cavity of the shell. The negative electrode elastic clip and the position elastic head are mounted on the side face and the bottom end of the lower part of the shell respectively. The audio interface and the charge data line USB interface are mounted on the side face on the upper end of the shell. After an automobile is started and the vehicle charger shell is connected with an igniter socket normally for powersupply, the flickering of a green lamp of the LED charge indicating lamp indicates normal charge. Then the audio interface is connected with a vehicle sound box through the data line and cell phone Bluetooth and vehicle charger Bluetooth are set. After Bluetooth connection is realized, a function of vehicle Bluetooth hand free communication can be realized.
Owner:SHAANXI PEIYUAN ELECTRONICS TECH
Handheld stirring rod and processing method thereof
ActiveCN103230230BEasy to operateWith overturn protectionField or armature current controlKitchen equipmentElectric machineEngineering
The invention relates to the technical field of stirring rods, in particular to a handheld stirring rod and a processing method thereof. The handheld stirring rod comprises a housing, a stirring rod body, a microprocessor, a force sensor, a gyro sensor, a revolving speed sensor, a temperature sensor and a motor, and is characterized in that a plurality of signal ends of the microprocessor are respectively connected with the input end of a rectification circuit, the signal output end of the force sensor, the signal output end of the gyro sensor, the signal output end of the revolving speed sensor, the signal output end of the temperature sensor, the signal input ends of a plurality of LED lamps and one end of a power cord; the output end of the rectification circuit is connected with the input end of the motor; and the LED lamps comprise N speed display lamps, one work indicator light and one overload display lamp, where the N is a natural number larger than or equal to 3. Compared with the prior art, the speed is started and adjusted through the intensity of grip strength of fingers, and the operation is simpler. Moreover, the stirring rod, which has the functions of both overturn protection and overhead protection, is safer and more reliable for use.
Owner:MIJI ELECTRONICS & APPLIANCES SHANGHAI
Controller for motor of pure electric vehicle
InactiveCN102582467AEasy to useEffective protectionSpeed controllerElectric devicesElectric machineryMotor controller
The invention relates to a controller for a direct current motor of a pure electric vehicle. The controller consists of a wave chopper 1, a main contactor 2, a reversing contactor 3, a main circuit protector 4, a control circuit protector 5, a shunt 6, a heat-dissipation aluminum plate 7 and an accelerator 8. The controller has the advantages that the reset function can be used repeatedly, and the wire harness protection function is strong; moreover, the controller does not need to be replaced or maintained, is low in efficiency cost and can effectively ensure the reliability and the safety of protected wire harnesses.
Owner:山东天海电装有限公司
Multipurpose inflatable dress
InactiveCN102871236ASolve the shortcomings of rainproof and not warmSolve the shortcomings of keeping warm and not rainproofHatsHeadwear capsEngineeringPoly vinyl chloride
The invention relates to the field of dresses and particularly relates to a multipurpose inflatable dress, comprising a jacket and trousers. The multipurpose inflatable dress is characterized in that the jacket and the trousers are of a sealed double-layered structure and are provided with inflating devices. When being manufactured, the multipurpose inflatable dress is manufactured by materials including flexible rubber, PVC (Poly Vinyl Chloride) and the like which meet hygienic standards. The inflatable dress manufactured by the materials and having the structure has the characteristics of rainproof and cold-proof performance, heat preservation and body protection, insect biting prevention, simple structure and convenience for carrying, and therefore, the multipurpose inflatable dress can be applied to various fields and environments of lifesaving and emergency, flood prevention patrolling, highland watch keeping, work in winter, work on rainy day, night activities and the like.
Owner:何胜
Constant-current power supply based on triode voltage stabilizing circuit
InactiveCN105978312ASmooth transmissionEasy to useEmergency protective circuit arrangementsDc-dc conversionEngineeringField-effect transistor
The invention discloses a constant-current power supply based on a triode voltage stabilizing circuit. The constant-current power supply is characterized by mainly consisting of a processing chip U, a field-effect transistor MOS1, a polar capacitor C4, a diode D3, a voltage regulating circuit, a constant-current driving circuit, a triode voltage stabilizing circuit and a pulse trigger circuit, wherein the voltage-regulating circuit is connected with the processing chip U; the constant-current driving circuit is connected with a source electrode of the field-effect transistor MOS1 and the processing chip U respectively; the triode voltage stabilizing circuit is connected in series between the voltage-regulating circuit and the constant-current driving circuit; and the pulse trigger circuit is connected with a drain electrode of the field-effect transistor MOS1. Through adoption of the constant-current power supply, an instantaneous high voltage and instantaneous high current generated on an input voltage and input current by external electromagnetic wave interference can be eliminated or attenuated, and transmission of voltage and current is kept stable dynamically, so that a stable voltage and stable current can be output, and normal use of electrical appliances is ensured effectively.
Owner:CHENGDU SAIPUQI TECH CO LTD
Power conversion efficiency improvement device of inverter compressor
InactiveCN105089999AImprove power conversion efficiencyReduce energy consumptionEmergency protective circuit arrangementsPump controlMicrocontrollerMicrocomputer
The invention provides a power conversion efficiency improvement device of an inverter compressor. The power conversion efficiency improvement device comprises a power supply, a detection circuit, a protection circuit, a single-chip microcomputer, a drive control circuit and a three-phase inverter circuit. The detection circuit is connected with the three-phase inverter circuit to collect the current and voltage of the three-phase inverter circuit, and is connected with the single-chip microcomputer through the protection circuit. The output end of the single-chip microcomputer is connected with the drive control circuit. The output end of the drive control circuit is connected with the three-phase inverter circuit. The output end of the three-phase inverter circuit is connected with a load. An intelligent power module is adopted, and the power conversion efficiency improvement device is high in integration level and low in cost and is directly integrated on a main control panel; and the energy consumption control efficiency is greatly increased by 30%, and the power conversion efficiency improvement device accords with the current development direction of power devices.
Owner:深圳市建滔科技有限公司
Voltage regulation type constant current power supply based on current detection circuit
InactiveCN105978320ASmooth transmissionEasy to useEmergency protective circuit arrangementsPower conversion systemsDetector circuitsVoltage regulation
The invention discloses a voltage regulation type constant current power supply based on a current detection circuit. The voltage regulation type constant current power supply is characterized by mainly consisting of a processing chip U, a field-effect tube MOS1, a polar capacitor C4, a diode D3, a voltage regulation circuit, a constant current drive circuit, a pulse trigger circuit and a current detector circuit, wherein the voltage regulation circuit is connected with the processing chip U; the constant current drive circuit is connected with a source electrode of the field-effect tube MOS1 and the processing chip U respectively; the pulse trigger circuit is connected with a drain electrode of the field-effect tube MOS1; and the current detection circuit is serially connected between the drain electrode of the field-effect tube MOS1 and the pulse trigger circuit. According to the voltage regulation type constant current power supply, input voltage and current can be eliminated or attenuated due to instant high voltage and instant high current generated by external electromagnetic wave interface, so that the transmission of voltage and current keeps stable dynamically, the output for stable voltage and current can be guaranteed, and normal use of electric appliances is effectively guaranteed.
Owner:CHENGDU SAIPUQI TECH CO LTD
Granulation system with thermal protection function
InactiveCN109371185AAids in heat protectionRealize transmissionRecycling and recovery technologiesTemperature monitoringStops device
The invention discloses a granulation system with a thermal protection function. The granulation system with the thermal protection function comprises a rotating shaft, an auxiliary cooling air supplyunit, a temperature monitoring unit and a granulating device, wherein the granulating device is fixed at the top of the rotating shaft. The granulation system is characterized in that the auxiliary cooling air supply unit provides cooling air for the temperature monitoring unit and the granulating device; the auxiliary cooling air supply unit comprises an air duct and an air inlet pipeline; the air duct is connected with a fan through the air inlet pipeline; the temperature monitoring unit and the granulating device are arranged in the air duct; the temperature monitoring unit comprises a plurality of thermocouples, a through aperture conductive slip ring, a rotation stopping piece and a rotation stopping device; and the plurality of thermocouples are arranged in the granulating device, the rotation stopping device is arranged below the granulating device, the through aperture conductive slip ring is arranged on the rotating shaft in a sleeving mode and is fixed on the rotation stopping device through the rotation stopping piece. The granulation system can be widely applied to the fields of steel, metallurgy and the like.
Owner:CHONGQING UNIV
Signal amplification circuit based light-control LED (Light-Emitting Diode) energy-saving control system
InactiveCN106028516AEliminate Interfering SignalsImprove accuracyElectrical apparatusElectroluminescent light sourcesCapacitanceEngineering
The invention discloses a signal amplification circuit based light-control LED (Light-Emitting Diode) energy-saving control system. The system is characterized by mainly comprising a control chip U1, a luminance sensor, a triode VT1, a voltage stabilizing diode D2, a signal receiving circuit, a polar capacitor C4, a signal amplification circuit, a current regulation circuit and a linear driving circuit, wherein the signal amplification circuit is connected between the signal receiving circuit and a pin ANT of the control chip U1 in series; the current regulation circuit is connected with an emitting electrode of the triode VT1 and the control chip U1, respectively; and the linear driving circuit is connected with the current regulation circuit. According to the signal amplification circuit based light-control LED energy-saving control system, an interference signal in signals output by the luminance sensor can be eliminated so that the signals output by the luminance sensor are accurate, thus the accuracy of the system for signal processing is improved; and meanwhile the current intensity can be effectively regulated, thus steady currents can be output by the system.
Owner:CHENGDU ANGDIJIA TECH CO LTD
Signal-amplification-type light-operated LED control system based on current adjusting circuit
InactiveCN105916253AEliminate Interfering SignalsImprove accuracyElectrical apparatusElectroluminescent light sourcesCapacitanceDriver circuit
The invention discloses a signal-amplification-type light-operated LED control system based on a current adjusting circuit. The system is mainly formed by a control chip U1, a brightness sensor, a triode VT1, a voltage stabilizing diode D2, a linear driving circuit, a signal receiving circuit, a polar capacitor C4, a signal amplification circuit connected in series between the signal receiving circuit and an ANT base pin of the control chip U1, a current adjusting circuit connected to an emitting electrode of the triode VT1 and the control chip U1 and a buffer type trigger circuit connected in series between the current adjusting circuit and the linear driving circuit. By using the system, an interference signal in signals output by the brightness sensor can be eliminated so that the signals output by the brightness sensor are accurate and signal processing accuracy of the system is increased. Simultaneously, the system can effectively adjust voltage intensity so that the system can be ensured to output a stable current.
Owner:CHENGDU ANGDIJIA TECH CO LTD
Composite multi-effect automobile heat insulation plate and preparation method thereof
ActiveCN111376540ASimple structureFunctionalSynthetic resin layered productsVehicle componentsInsulation layerAcoustic noise reduction
The invention relates to the technical field of automobile parts, in particular to a composite multi-effect automobile heat insulation plate which comprises a heat insulation plate body and long flowguide grooves. The heat insulation plate body comprises a heat insulation base layer, a heat insulation protection layer and a sound insulation layer, and the heat insulation protection layer is arranged above the heat insulation base layer and comprises heat insulation mortar and microporous ceramic balls; a reinforcing metal grid is arranged above the heat insulation protection layer, the upperportion of the reinforcing metal grid is coated with a noise reduction damping layer, and a sound insulation layer is arranged above the noise reduction damping layer. A second noise reduction dampinglayer is arranged above the sound insulation layer, and the outer side of the noise reduction damping layer is coated with a heat conduction layer; the section of the heat insulation plate body is ofa continuous waveform structure, and a plurality of long flow guide grooves are formed in the heat insulation plate body at intervals. The composite multi-effect automobile heat insulation plate is simple in structure and high in functionality, has the effects of heat insulation protection and noise reduction, and is high in stability and pressure resistance.
Owner:上海宝山大陆汽车配件有限公司
Over-heat and over-current protecting unit
InactiveCN1152401CConducive to miniaturizationWith current limiting effectProtective switch operating/release mechanismsCurrent limitingEngineering
An over-heat and over-current protecting unit for thermomagnetic circuit breaker is composed of current elimiting element, exothermic element, bimetal element, and trip regulating element. It feature that the current limiting element and the exothermic element are integrated into one whole for smaller size.
Owner:常熟开关制造有限公司
Adjustable filtering frequency audio processing system based on buck-mode constant current
InactiveCN104954946AWith under-power lockoutWith thermal protectionTransducer circuitsHandling systemAudio frequency
The invention discloses a filter-frequency-adjustable audio processing system based on linear driving. The system is mainly composed of an audio acquisition module, a frequency selecting circuit, a microprocessing circuit, an amplifying circuit and an adjustable filter circuit, wherein the frequency selecting circuit is connected with the audio acquisition module, the microprocessing circuit is connected with the frequency selecting circuit, and the amplifying circuit and the adjustable filter circuit are both connected with the microprocessing circuit. The system is characterized in that a linear driving circuit is further arranged between the microprocessing circuit and the frequency selecting circuit; the linear driving circuit is composed of a driving chip U, a triode VT4, a triode VT5, a triode VT6, a triode VT7 and the like. The linear driving circuit can make the audio processing system more stable.
Owner:CHENGDU JIESHENG TECH CO LTD
Constant-current drive circuit-based voltage adjusting constant-current power supply
InactiveCN105978319ASmooth transmissionEasy to useEmergency protective circuit arrangementsPower conversion systemsEngineeringElectromagnetic wave interference
The invention discloses a voltage-adjustable constant-current power supply based on a constant-current drive circuit, which is characterized in that it mainly consists of a processing chip U, a field effect transistor MOS1, a polar capacitor C4, a diode D3, a voltage adjustment circuit, and a constant-current drive circuit. , the triode voltage regulator circuit connected in series between the voltage adjustment circuit and the constant current drive circuit, the pulse trigger circuit connected with the drain of the field effect transistor MOS1, and the pulse trigger circuit connected in series between the drain of the field effect transistor MOS1 and the pulse trigger circuit Between the current detection circuit composition. The present invention can eliminate or attenuate the instantaneous high voltage and instantaneous high current of the input voltage and current due to external electromagnetic wave interference, so that the transmission of voltage and current can be dynamically kept stable, thereby ensuring that the present invention can output stable voltage and current, and Effectively ensure the normal use of electrical appliances.
Owner:CHENGDU SAIPUQI TECH CO LTD
Light-operated LED energy saving control system based on buffer-type trigger circuit
InactiveCN105916255AEliminate Interfering SignalsImprove accuracyElectrical apparatusElectroluminescent light sourcesControl systemEngineering
The invention discloses a light-operated LED energy saving control system based on a buffer-type trigger circuit. The system is mainly formed by a control chip U1, a brightness sensor, a triode VT1, a voltage stabilizing diode D2, a polar capacitor C4, a signal receiving circuit, a current adjusting circuit connected to an emitting electrode of the triode VT1 and the control chip U1, a linear driving circuit connected to the current adjusting circuit and the buffer-type trigger circuit connected in series between the current adjusting circuit and the linear driving circuit. By using the system, an interference signal in signals output by the brightness sensor can be eliminated so that the signals output by the brightness sensor are accurate and signal processing accuracy of the system is increased. Simultaneously, the system can effectively adjust voltage intensity so that the system can be ensured to output a stable current.
Owner:CHENGDU ANGDIJIA TECH CO LTD
Voltage regulating type constant-current power source based on pulse trigger circuit
InactiveCN105974990ASmooth transmissionEasy to useElectric variable regulationElectromagnetic wave interferenceCapacitor
The invention discloses a voltage-adjustable constant-current power supply based on a pulse trigger circuit, which is characterized in that it mainly consists of a processing chip U, a field effect transistor MOS1, a polar capacitor C4, a diode D3, a voltage adjustment circuit, and a constant-current drive circuit. A comparison amplifier circuit connected in series between the voltage adjustment circuit and the VDD+ pin of the processing chip U, a pulse trigger circuit connected to the drain of the field effect transistor MOS1, and a pulse trigger circuit connected in series between the drain of the field effect transistor MOS1 Between the current detection circuit composition. The present invention can eliminate or attenuate the instantaneous high voltage and instantaneous high current of the input voltage and current due to external electromagnetic wave interference, so that the transmission of voltage and current can be dynamically kept stable, thereby ensuring that the present invention can output stable voltage and current, and Effectively ensure the normal use of electrical appliances.
Owner:CHENGDU SAIPUQI TECH CO LTD
A composite multi-effect automobile heat insulation board and its preparation method
ActiveCN111376540BSimple structureFunctionalSynthetic resin layered productsVehicle componentsInsulation layerAcoustic noise reduction
The invention relates to the technical field of auto parts, in particular to a composite multi-effect heat insulation board for automobiles, which includes a heat insulation board body and a long diversion groove; the heat insulation board body includes a thermal insulation base layer, a heat insulation protection layer and a sound insulation layer , a thermal insulation protective layer is arranged above the thermal insulation base, and the thermal insulation protective layer includes thermal insulation mortar and microporous ceramic balls; a reinforced metal grid is arranged above the thermal insulation protective layer, and a noise reduction damping layer is coated on the reinforced metal grid , a sound-insulating layer is arranged above the noise-reducing damping layer; a second layer of noise-reducing damping layer is arranged above the sound-insulating layer, and a heat-conducting layer is coated on the outside of the noise-reducing damping layer; A plurality of diversion long grooves are arranged at intervals on the heat insulation board body; the invention has simple structure, strong functionality, functions of heat insulation protection and noise reduction, and has strong stability and pressure resistance.
Owner:上海宝山大陆汽车配件有限公司
High precision and low drift integrated voltage reference source circuit
InactiveCN101697087BLow voltage regulationSmall temperature coefficientEmergency protective arrangements for limiting excess voltage/currentElectric variable regulationEngineeringVoltage reference
The invention discloses a high-precision low-drift integrated voltage reference source circuit, which comprises a PTAT generating circuit (1) for generating a PTAT current; a voltage boosting circuit (2) for boosting the PTAT voltage and realizing the startup isolation of the circuit ; The current feedback circuit (3) is used to stabilize the output voltage and improve the temperature stability of its current; the overheating protection circuit (4) is used for overheating protection of the output tube; the high current drive and overcurrent protection circuit (5) is used for It is used to adjust the output voltage of the output tube when the load current is large; it is used for the overcurrent protection of the transistor in the high current drive circuit; the power supply voltage distribution circuit (6) is used to improve the DC power supply suppression characteristics of the output reference voltage; the output drive and reverse connection The protection circuit (7) is used to strengthen the driving capability of the output reference and the circuit reverse connection protection.
Owner:GUIZHOU UNIV
High-resistance filtering-type light-operated LED control system based on linear driving circuit
InactiveCN105916254AEliminate Interfering SignalsImprove accuracyElectrical apparatusElectroluminescent light sourcesHigh resistanceDriver circuit
The invention discloses a high-resistance filtering-type light-operated LED control system based on a linear driving circuit. The system is mainly formed by a control chip U1, a brightness sensor, a triode VT1, a voltage stabilizing diode D2, a polar capacitor C4, a signal receiving circuit, a current adjusting circuit, a high resistance filtering circuit connected in series between the signal receiving circuit and an ANT base pin of the control chip U1, a linear driving circuit connected to the current adjusting circuit and a buffer type trigger circuit connected in series between the current adjusting circuit and the linear driving circuit. By using the system, an interference signal in signals output by the brightness sensor can be eliminated so that the signals output by the brightness sensor are accurate and signal processing accuracy of the system is increased. Simultaneously, the system can effectively adjust voltage intensity so that the system can be ensured to output a stable current.
Owner:CHENGDU ANGDIJIA TECH CO LTD
Reference current correction type energy-saving power supply circuit used for cold light LED
InactiveCN105916247AGuaranteed stabilityStrong stabilityElectrical apparatusElectroluminescent light sourcesCapacitanceDiode rectifier
The invention discloses a reference current correction type energy-saving power supply circuit used for a cold light LED. The circuit is characterized in that the circuit is mainly composed of a control chip U2, a reference current correction circuit, a thyristor trigger circuit, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C5, a resistor R9 one end of which is connected with a positive electrode of the polar capacitor C5 and the other end is connected with a GND pin of the control chip U2 and then is grounded, a polar capacitor C9 serially connected between a non-dotted end and a dotted end of a secondary side inductance coil of the transformer T, and a low pass filter circuit serially connected between the diode rectifier U1 and the transformer T. According to the invention, the voltage and current on an input end can be filtered, so that the input voltage and current are more stable; in addition, the strength of the filtered voltage and current is adjusted, and the movement of the electromagnetic waves of the current is maintained in a uniform speed state, so that a stable work current can be output, and the brightness stability of an LED and the like is ensured.
Owner:CHENGDU ANGDIJIA TECH CO LTD
High-brightness white LED driving circuit
InactiveCN107787068ACompact structureReduce volumeElectrical apparatusElectroluminescent light sourcesElectricityLow voltage
The invention provides a high-brightness white LED driving circuit suitable for the lighting field. The circuit consists of a substrate PNP bandgap reference circuit, an I-V bandgap reference circuit,an I-V RC oscillator circuit, a hysteresis comparator circuit and a drive circuit. The circuit has the advantages of compact structure, small volume, stable work, great adaptability and low power consumption. The working efficiency is improved. The circuit has the functions of adjustable brightness, overheat protection, low voltage prompt and the like.
Owner:徐萍
Automatic constant current-based energy-saving and environment-friendly lamp drive system
InactiveCN105163441AWith under-power lockoutWith open circuit protectionElectric light circuit arrangementEnergy saving control techniquesBand-pass filterControl circuit
The invention discloses an automatic constant current-based energy-saving and environment-friendly lamp drive system, which comprises a solar panel (1), a storage battery (2), a protection circuit (6), a control circuit board (3), a head lamp (4), a caution lamp (7) and a band-pass filtering oscillation circuit (8), wherein the protection circuit (6) is connected with the solar panel (1); the control circuit board (3) and the head lamp (4) are connected with the storage battery (2) respectively; the caution lamp (7) is connected with the control circuit board (3); the band-pass filtering oscillation circuit (8) is connected between the protection circuit (6) and the storage battery (2); the automatic constant current-based energy-saving environment-friendly lamp drive system is characterized in that an automatic constant-current circuit (9) is connected between the protection circuit (6) and the storage battery (2); and the automatic constant-current circuit (9) is composed of a constant-current chip U, a triode VT1, a triode VT2, a triode VT3, a triode VT4 and the like. By the automatic constant-current circuit, stable voltage current can be provided for the system, so that the service life of the energy-saving and environment-friendly lamp drive system disclosed by the invention is effectively prolonged.
Owner:成都申川节能环保工程有限公司
Novel dual-end single-pole circuit of electronic ballast for fluorescent lamp
InactiveCN106793432AImprove efficiencySoft lightElectrical apparatusElectric lighting sourcesFull bridgeInductor
The invention discloses a novel dual-end single-pole circuit of an electronic ballast for a fluorescent lamp. The novel dual-end single-pole circuit comprises a common mode inductor, a full-bridge rectification circuit, a filtering and shaping circuit, an oscillation circuit, an open circuit protection circuit and a lamp tube protection circuit, wherein an input end of the common mode inductor is connected with a fuse wire and an inductor L4 and is connected with an L pole of an alternating current 220v; the other end of the common mode inductor is connected with an N pole of the alternating current 220V. According to the novel dual-end single-pole circuit of the electronic ballast for the fluorescent lamp, protection circuits are completely designed for the circuit; the novel dual-end single-pole circuit has the functions of open circuit protection, overcurrent protection and overheat protection. A single-pole high-efficiency electronic ballast for the fluorescent lamp has the advantages of being high in efficiency, long in service life and soft in light ray, being environment-friendly and energy-saving and protecting an eye, and the like.
Owner:SHENZHEN SIKAIER ELECTRONICS TECH CO LTD
Integrated control device for fuel cell vehicle and overcurrent protection control method
ActiveCN111186301AMeet power distribution needsReal-time effective control of contact statusElectric devicesElectric powerControl powerElectric machinery
The invention belongs to the technical field of integrated control devices for vehicles, and particularly relates to an integrated control device for a fuel cell vehicle and an overcurrent protectioncontrol method. Specifically, the control device comprises a control main board, a first loop and a second loop, the first loop and the second loop are both connected with the control main board, thefirst loop is used for controlling air conditioner output and DC / DC power distribution output on the whole vehicle, and the second loop is used for controlling power distribution output of other high-voltage devices on the whole vehicle. The invention aims to solve the problem that a traditional four-in-one integrated control device is not high in integration degree and has potential safety hazards and energy waste. Through the first loop and the second loop which are connected with the control main board, the power distribution requirements of a fuel cell bus in the driving state and the charging state are met, high integration is achieved, the cost is reduced, and high efficiency, power saving and safety are achieved. Meanwhile, through an oil pump temperature acquisition module and an air pump current acquisition module which are connected with a CPU, the whole device has oil pump motor overheating protection and air pump motor overcurrent protection functions, and is reliable and worry-saving.
Owner:YANGZHOU YAXING MOTOR COACH
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