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Controlling method and controller for variable participation frequency of temperature control load
InactiveCN103178533AReduce capacityReduce dependenceDomestic cooling apparatusLighting and heating apparatusPower gridReducing capacity
The invention belongs to the technical field of frequency control and relative technical field of demand side response in an intelligent power grid, aims at reducing capacity requirements on a spare generator unit and an energy storage device from system frequency control requirements, saves corresponding investment, and simultaneously avoids the problem about system 'secondary disturbance' prone to occurring during a conventional frequency controlling process. The technical scheme includes that a controlling method for variable participation frequency of temperature control load includes the steps of: (1) collecting current power grid frequency fmeas (advising a refrigerating chamber temperature Tc (n) for refrigerating equipment); (2) designing pf into a piecewise linear function in positive proportion to power grid frequency deviation; (3) calculating according to data of the step (1) and the step (2); (4) determining the next operation of a compressor of the refrigerating equipment according to the calculating result of the step (3); and (5), n=n+1, returning to the step (1) and starting the next cycle. The controlling method and a controller for the variable participation frequency of the temperature control load are mainly applied to manufacture of the refrigerating equipment.
Owner:TIANJIN UNIV
Nonlinear negative feedback LED (light emitting diode) switch voltage stabilizing power supply based on phase-sensitive wave detection circuit
InactiveCN104953869AReduce radio frequency interferenceSimple structureAc-dc conversionDc-dc conversionWave detectionCarrier signal
Owner:CHENGDU JIESHENG TECH CO LTD
Video acquisition method and device, computer readable storage medium and electronic equipment
InactiveCN111355990AImprove user experienceRealize automatic interceptionSelective content distributionStart timeComputer graphics (images)
The invention relates to the technical field of video processing, and provides a video acquisition method and device, a computer readable storage medium and electronic equipment. The video acquisitionmethod comprises the steps that a shooting request sent by a client is responded, wherein the shooting request comprises shooting starting time, video starting time is determined according to the shooting starting time, a real-time event video is acquired, a target video from the real-time event video is determined according to the video starting time, and the target video is sent to the client.The target video is intelligently recognized in the real-time event video, so that the delay effect of field shooting is avoided, and the use experience of a user is improved.
Owner:NETEASE (HANGZHOU) NETWORK CO LTD
Nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source
InactiveCN104467487AReduce radio frequency interferenceSimple structurePower amplifiersAc-dc conversionEngineeringFeedback circuits
The invention discloses a nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a voltage comparator U1, a switch filter circuit connected between the positive electrode output end of the diode rectifier U and the in-phase end of the power amplifier P1 in series, a power source output circuit connected with a secondary side coil L2 of the transformer T, a voltage transformation feedback circuit connected with a secondary side coil L3 of the transformer T and the like. The nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source is characterized in that a logic protection emitter coupling type amplification circuit is further connected between the Q end of the voltage comparator U1 and the inversion-phase end of the power amplifier P1 in series. According to the nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source, a current detection amplifier circuit is used for achieving current detection, the current borne by a switch power source can be effectively increased, and the application range of the switch power source becomes wider.
Owner:CHENGDU COPOO TECH
Mixed triggering type power source based on logic protection amplifying circuit
InactiveCN104467481ASimple structureReduce radio frequency interferencePower amplifiersAc-dc conversionTransformerRadio frequency
The invention discloses a mixed triggering type power source based on a logic protection amplifying circuit. The mixed triggering type power source based on the logic protection amplifying circuit is mainly composed of a transformer diode triggering circuit, a power logic control circuit, a crystal oscillating circuit and a buffering crystal oscillating circuit, wherein the power logic control circuit is connected with the transformer diode triggering circuit, and the crystal oscillating circuit and the buffering crystal oscillating circuit are connected with the transformer diode triggering circuit. The mixed trigger type power source based on the logic protection amplifying circuit is characterized in that a logic protection amplifying circuit is further connected between the transformer diode triggering circuit and the power logic control circuit in series. By the adoption of the mixed triggering type power source based on the logic protection amplifying circuit, a circuit structure is greatly simplified, the radio-frequency interference of the circuit and radio-frequency interface of external connection are reduced, and manufacturing cost and the maintenance cost are greatly reduced; meanwhile, the delay effect of a traditional power circuit can be effectively overcome, and the quality of the power source can be effectively improved.
Owner:CHENGDU COPOO TECH
System, method and device for adjusting flow of parallel branch of double-phase cold plate liquid cooling system
ActiveCN113597215AEasy to controlAvoid poor regulationModifications using liquid coolingEnergy efficient computingDouble phaseCirculator pump
The invention provides a system, a method and a device for adjusting the flow of a parallel branch of a double-phase cold plate liquid cooling system. The system comprises a circulating pump, a preheater, a condenser, a double-phase cold plate liquid cooling parallel branch, a control module and a data acquisition module; the circulating pump is connected with the preheater and the condenser; the double-phase cold plate liquid cooling parallel branch comprises a plurality of cooling branches which are connected with the preheater and the condenser; an electric valve and a plurality of evaporators are arranged on each cooling branch, and temperature sensors are arranged at the evaporators; the electric valves are connected in series with the evaporators to form the cooling branches, and an enthalpy value transmitter and a pressure sensor are connected in series at the outlet of each evaporator in each cooling branch; the data acquisition module is connected with the temperature sensors, the enthalpy value transmitters and the pressure sensors; the control module is connected with the circulating pump, the data acquisition module and the electric valves. The flow of each liquid cooling branch is accurately controlled, the flow can be controlled by adjusting the rotating speed of the circulating pump in advance according to the load power consumption, and the delay effect is avoided.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
Excitation type large-current boosting double-filtering LED (Light-Emitting Diode) constant switching stabilized voltage supply
InactiveCN104918380AReduce radio frequency interferenceSimple structureAc-dc conversionDc-dc conversionEngineeringFeedback circuits
Owner:CHENGDU LEIKEER SCI & TECH
Logic protection amplification type blue-light LED lamp protecting system
InactiveCN104411055AReduce power consumptionProtect power needsElectric light circuit arrangementEnergy saving control techniquesOvervoltageShort circuit protection
The invention discloses a logic protection amplification type blue-light LED lamp protecting system. The logic protection amplification type blue-light LED lamp protecting system mainly comprises a grid drive circuit, a logic control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field-effect transistor MOS1, a field-effect transistor MOS2, a field-effect transistor MOS3, a field-effect transistor MOS4 and an oscillator. The power amplifiers P1 and P2 and the pulse comparators U1 and U2 are connected with the logic control circuit; grids of the field-effect transistors MOS1, MOS2, MOS3 and MOS4 are connected with the grid drive circuit; the oscillator is connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system is characterized in that a logic protection amplification circuit is also connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system has functions of short-circuit protection, overvoltage protection and open circuit protection and has low power consumption which is one third of power consumption of a conventional protection circuit.
Owner:CHENGDU COPOO TECH
Light beam exciting type logic protective nolinear negative feedback stabilized switching power supply
InactiveCN104467488AAutomatically adjust the output voltage valueThe output voltage value is stableAc-dc conversionDc-dc conversionFeedback circuitsEngineering
The invention discloses a light beam exciting type logic protective nolinear negative feedback stabilized switching power supply which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a power output circuit and the like, wherein the switch filter circuit is connected between the diode rectifier U and the power amplifier P1 in series, and the power output circuit is connected with a secondary side coil L2 of the transformer T. The light beam exciting type logic protective nolinear negative feedback stabilized switching power supply is characterized in that a light beam exciting type logic amplifying circuit is further connected between the negative electrode output end of the diode rectifier U and a PWM controller in series, and a logic protection emitter coupled type amplifying circuit is further connected between the reversal phase end of the power amplifier P1 and the switch filter circuit in series. The nonlinear characteristics of a nolinear negative feedback circuit are utilized to enable a regulating tube to be located on the edge of a saturation region automatically, radio-frequency interference of the circuit and external radio-frequency interference are lowered effectively, the circuit structure is simplified greatly, and the manufacturing cost and the maintenance cost are reduced greatly.
Owner:CHENGDU CHUANGTU TECH
Double-buffering trigger type driving power source for power system fault detecting device
InactiveCN104410299ASimple structureReduce radio frequency interferenceAc-dc conversionOscillations generatorsElectric power systemEngineering
The invention discloses a double-buffering trigger type driving power source for a power system fault detecting device. The double-buffering trigger type driving power source mainly comprises a diode rectifier U and a nonlinear trigger circuit. The nonlinear trigger circuit is connected with the diode rectifier U. The double-buffering trigger type driving power source is characterized by further comprising a double-buffering quartz crystal oscillator circuit and a power logic voltage stabilizing circuit; the double-buffering quartz crystal oscillator circuit is connected with the nonlinear trigger circuit, and the power logic voltage stabilizing circuit is arranged between the diode rectifier U and the nonlinear trigger circuit in a serial connection manner; the power logic voltage stabilizing circuit comprises a power amplifier P1, an AND-NOT gate IC1, an AND-NOT IC2, an AND-NOT IC3, an AND-NOT IC4 and the like. The double-buffering trigger type driving power source has the advantages that the power logic voltage stabilizing circuit and the nonlinear trigger circuit are creatively combined with each other, accordingly, circuit structures can be greatly simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.
Owner:CHENGDU CHUANGTU TECH
Novel power supply for logic protection amplification type power system fault detection device
InactiveCN104467484ASimple structureReduce radio frequency interferencePower amplifiersAc-dc conversionElectric power systemPower circuits
The invention discloses a novel power supply for a logic protection amplification type power system fault detection device. The novel supply for the logic protection amplification type power system fault detection device mainly consists of a transformer diode trigger circuit, a primary crystal oscillator circuit, a secondary crystal oscillator circuit and a power logic control circuit connected with the transformer diode trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are connected with the transformer diode trigger circuit. The transformer diode trigger circuit consists of a diode rectifier U, a transformer T and a trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are both connected with the trigger circuit. The novel power supply is characterized in that a logic protection amplification circuit is further connected between the transformer T and the power logic control circuit in series. A circuit structure can be greatly simplified, and radio-frequency interference of the circuits and external radio-frequency interference are reduced, so that the manufacturing cost and maintenance cost are remarkably reduced. In addition, the novel power supply can further effectively overcome the delayed effect of a traditional power supply circuit, and the quality of the power supply can be effectively improved.
Owner:CHENGDU COPOO TECH
Constant-current hybrid triggered driving power supply for power system fault detection devices
InactiveCN104883080ASimple structureReduce radio frequency interferenceAc-dc conversionElectric power systemNAND gate
The invention discloses a hybrid triggering type driving power source for a power system fault detector. The hybrid triggering type driving power source mainly comprises a diode rectifier U, a nonlinear trigger circuit connected with the diode rectifier U, a buffering crystal oscillator circuit and a quartz crystal oscillator circuit, wherein the buffering crystal oscillator circuit and the quartz crystal oscillator circuit are connected with the nonlinear trigger circuit. The hybrid triggering type driving power source is characterized in that a power logic voltage-stabilizing circuit is connected between the diode rectifier U and the nonlinear trigger circuit and mainly comprises a power amplifier P1, an NAND gate IC1, an NAND gate IC2, an NAND gate IC3, an NAND gate IC4 and a diode D2, wherein the N pole of the diode D2 is connected with the output end of the power amplifier P1 and the P pole of the diode D2 is grounded after passing through a resistor R4. According to the hybrid triggering type driving power source, the circuit structure can be greatly simplified, radio-frequency interference of the circuits and radio-frequency interference of external connection can be lowered, and the manufacturing cost and the maintenance cost are greatly lowered.
Owner:CHENGDU CHUANGTU TECH
Logic control circuit based hybrid trigger type power source for power system fault detection device
InactiveCN104410297ASimple structureReduce radio frequency interferenceAc-dc conversionElectric power systemTransformer
The invention discloses a logic control circuit based hybrid trigger type power source for a power system fault detection device. The power source mainly comprises a transformer diode trigger circuit, a power logic control circuit, a crystal oscillating circuit and a buffering crystal oscillating circuit, wherein the power logic control circuit is connected with the transformer diode trigger circuit, and the crystal oscillating circuit and the buffering crystal oscillating circuit are connected with the transformer diode trigger circuit. The power source is characterized in that the power logic control circuit is formed by a power amplifier P1, an NAND gate IC1, an NAND gate IC2, an NAND gate IC3, an NAND gate IC4 and the like. The logic control circuit based hybrid trigger type power source has the advantages that circuit structures can be greatly simplified to reduce intrinsic and external radio-frequency interference for the circuits, and accordingly manufacturing cost and maintenance cost are greatly reduced; in addition, delay effects of traditional power circuits can be overcome effectively, and quality of the power source can be effectively improved.
Owner:CHENGDU CHUANGTU TECH
Combined protection type mixed triggering power source based on logic protection amplifying circuit
InactiveCN104935189ASimple structureReduce radio frequency interferenceAc-dc conversionEmergency protective circuit arrangementsTransformerControl circuit
The invention discloses a mixed triggering type power source based on a logic protection amplifying circuit. The mixed triggering type power source based on the logic protection amplifying circuit is mainly composed of a transformer diode triggering circuit, a power logic control circuit, a crystal oscillating circuit and a buffering crystal oscillating circuit, wherein the power logic control circuit is connected with the transformer diode triggering circuit, and the crystal oscillating circuit and the buffering crystal oscillating circuit are connected with the transformer diode triggering circuit. The mixed trigger type power source based on the logic protection amplifying circuit is characterized in that a logic protection amplifying circuit is further connected between the transformer diode triggering circuit and the power logic control circuit in series. By the adoption of the mixed triggering type power source based on the logic protection amplifying circuit, a circuit structure is greatly simplified, the radio-frequency interference of the circuit and radio-frequency interface of external connection are reduced, and manufacturing cost and the maintenance cost are greatly reduced; meanwhile, the delay effect of a traditional power circuit can be effectively overcome, and the quality of the power source can be effectively improved.
Owner:CHENGDU LEIKEER SCI & TECH
Blue light LED lamp protection system with amplification type field intensity detection circuit
InactiveCN104955229AReduce power consumptionProtect power needsEfficient power electronics conversionElectric light circuit arrangementOvervoltageShort circuit protection
The invention discloses an excitation type blue light LED lamp protection system. The excitation type blue light LED lamp protection system is characterized by being mainly composed of a gate drive circuit, a logical control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field-effect tube MOS1, a field-effect tube MOS2, a field-effect tube MOS3, a field-effect tube MOS4 and an oscillator, wherein the power amplifier P1 and the power amplifier P2 are connected with the logical control circuit, the pulse comparator U1 and the pulse comparator U2 are connected with the logical control circuit, gates of the field-effect tube MOS1, the field-effect tube MOS2, the field-effect tube MOS3 and the field-effect tube MOS4 are connected with the gate drive circuit, and the oscillator is connected between the negative pole input end of the pulse comparator U1 and the negative pole input end of the pulse comparator U2 in series. The excitation type blue light LED lamp protection system has the short circuit protection function, the overvoltage protection function and the open circuit protection function, and the power consumption of the excitation type blue light LED lamp protection system is quite low and is only one third of the power consumption of a traditional protection circuit. According to the excitation type blue light LED lamp protection system, as a switching current source is arranged, the electricity demand of a protection circuit can be guaranteed, external electromagnetic interference can be effectively avoided, and the control sensitivity and the control accuracy can be improved.
Owner:CHENGDU JIESHENG TECH CO LTD
Constant current symmetrical trigger-type driving power supply for power system fault detecting device
InactiveCN104868760ASimple structureReduce radio frequency interferenceAc-dc conversionPower flowElectromagnetic interference
Owner:CHENGDU CHUANGTU TECH
Logic protection emitter coupling excitation type filtering amplification LED constant power supply
InactiveCN104968090AReduce radio frequency interferenceSimple structureElectric light circuit arrangementConstant powerEngineering
The invention discloses a logic protection emitter coupling excitation type large-current LED constant power source. The power source is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a voltage comparator U1, a switch filter circuit connected between the output end of the positive electrode of the diode rectifier U and the in-phase end of the power amplifier P1 in series, a power output circuit connected with a secondary side coil L2 of the transformer T and the like. The power source is characterized by being further provided with a light beam excitation type logic amplifying circuit connected with the diode rectifier U, a slope compensator M and a current detection amplifier circuit and a logic protection emitter coupling amplifying circuit connected between a ramp generator and an oscillator in series. According to the power source, current detection is achieved through the current detection amplifier circuit, the loaded current of the switching power source can be effectively increased, and the application range of the power source is widened.
Owner:CHENGDU LEIKEER SCI & TECH
Non-linear negative feedback switching voltage-stabilized power supply based on constant current protection
InactiveCN104935194AAutomatically adjust the output voltage valueThe output voltage value is stablePower amplifiersAc-dc conversionEngineeringRadio frequency
The invention discloses a light beam exciting type logic protective nolinear negative feedback stabilized switching power supply which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a power output circuit and the like, wherein the switch filter circuit is connected between the diode rectifier U and the power amplifier P1 in series, and the power output circuit is connected with a secondary side coil L2 of the transformer T. The light beam exciting type logic protective nolinear negative feedback stabilized switching power supply is characterized in that a light beam exciting type logic amplifying circuit is further connected between the negative electrode output end of the diode rectifier U and a PWM controller in series, and a logic protection emitter coupled type amplifying circuit is further connected between the reversal phase end of the power amplifier P1 and the switch filter circuit in series. The nonlinear characteristics of a nolinear negative feedback circuit are utilized to enable a regulating tube to be located on the edge of a saturation region automatically, radio-frequency interference of the circuit and external radio-frequency interference are lowered effectively, the circuit structure is simplified greatly, and the manufacturing cost and the maintenance cost are reduced greatly.
Owner:CHENGDU CHUANGTU TECH
Beam excitation type nonlinear negative feedback stabilized switching power supply based on gate drive
InactiveCN104967319AAutomatically adjust the output voltage valueThe output voltage value is stableDc-dc conversionElectric variable regulationEngineeringFeedback circuits
The invention discloses a light beam excitation type non-linear negative feedback swiching voltage regulator, mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filtering circuit serially connected between the diode rectifier U and the power amplifier P1, a power output circuit connected to the vice side coil L2 of the transformer T, a transformation feedback circuit connected to the vice side coil L3 of the transformer T, a non-linear negative feedback circuit connected to the transformation feedback circuit, a PWM controller connected to the power amplifier P1, and a sliding adjustor, the output end of which is connected to the tap of the primary side coil L1 of the transformer while the input end thereof is connected to the output end of the power amplifier P1. According to the non-linear characteristic of the non-linear negative feedback circuit, the adjusting pipe is located at the edge of the saturation region automatically, the circuit self and external radio frequency interference of the circuit can be effectively reduced, and the circuit structure is greatly simplified, so the manufacturing cost and the maintenance cost are greatly reduced.
Owner:CHENGDU CHUANGTU TECH
Constant current double buffer trigger-type driving power supply for power system fault detecting device
InactiveCN104868728ASimple structureReduce radio frequency interferenceAc-dc conversionDc-dc conversionElectric power systemElectromagnetic interference
Owner:CHENGDU CHUANGTU TECH
Excitation type large-current LED constant switching stabilized power source
InactiveCN104470093AReduce radio frequency interferenceSimple structureElectric light circuit arrangementFeedback circuitsEngineering
The invention discloses an excitation type large-current LED constant switching stabilized power source. The excitation type large-current LED constant switching stabilized power source is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a voltage comparator U1, a switch filter circuit, a power output circuit, a voltage transformation feedback circuit, a nonlinear negative feedback circuit, a current detection amplifier circuit and the like, wherein the switch filter circuit is connected between the positive electrode output end of the diode rectifier U and the same-phase end of the power amplifier P1 in series, the power output circuit is connected with a secondary-side coil L2 of the transformer T, the voltage transformation feedback circuit is connected with a secondary-side coil L3 of the transformer, the nonlinear negative feedback circuit is connected with the voltage transformation feedback circuit, the input end of the current detection amplifier circuit is connected with the negative electrode output end of the diode rectifier U, and the output end of the current detection amplifier circuit is connected with the R end of the voltage comparator U1. According to the excitation type large-current LED constant switching stabilized power source, current detection is achieved through the current detection amplifier circuit, the borne current of the switching stabilized power source can be effectively increased, and the application range of the power source can be accordingly wider.
Owner:CHENGDU COPOO TECH
Constant current energy-saving drive power supply for electric power system fault detection apparatus
InactiveCN104901549ASimple structureReduce radio frequency interferenceDc-dc conversionElectric variable regulationAudio power amplifierElectric power system
The invention discloses a driving power source for a power system fault detecting device. The driving power source mainly comprises a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a slider regulator, a power output circuit and a voltage transformation feedback circuit. The switch filter circuit is arranged between an anode output end of the diode rectifier U and a same-phase end of the power amplifier P1 in a serial connection manner, the slider regulator is connected with a sliding tap of a primary coil L1 of the transformer T, the power output circuit is connected with a secondary coil L2 of the transformer T, and the voltage transformation feedback circuit is connected with a secondary coil L3 of the transformer T. The driving power source has the advantages that high-quality input voltages can be provided for the transformer T by a novel power logic voltage stabilizing circuit, accordingly, circuit structures can be simplified, radio frequency interference of the circuits and external radio frequency interference can be reduced, and the manufacturing cost and the maintaining cost can be greatly lowered.
Owner:CHENGDU CHUANGTU TECH
Method and system for loading pictures at front end
InactiveCN110990101AOvercoming delay effectFast loadingProgram loading/initiatingExecution for user interfacesComputer visionData needs
The invention provides a front-end picture loading method and system, and the method comprises the following steps: S1, enabling each image file to be decomposed into a two-dimensional array at a webserver, executing the data cutting, and enabling the two-dimensional array to be divided into a plurality of array sets; s2, recording the image features of each array set into dom nodes of a corresponding image file; s3, when a user logs in the system through the web client, judging whether image data exists in the dom node of the current page or not; if so, obtaining a dom node of the to-be-loaded image file; and S4, taking out the array set and the image features from the dom node, executing data reconstruction, reconstructing the data set into a two-dimensional array, and restoring the two-dimensional array into an image file to realize image loading. When the picture is loaded, only a small amount of data needs to be loaded, so that the page delay effect caused by loading a large amount of pictures is effectively avoided, a user can enjoy extremely high loading speed, and the user experience is well improved.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
Composite logic protection amplifying type mixed triggering power source for detecting power faults
InactiveCN104935191ASimple structureReduce radio frequency interferencePower amplifiersAc-dc conversionEngineeringRadio frequency
The invention discloses a logic protection amplification type hybrid trigging power source for a power system fault detection device. The logic protection amplification type hybrid trigging power source is mainly composed of a diode rectifier U, a nonlinear triggering circuit, a buffering crystal oscillator, a quartz crystal oscillator circuit and a power logic voltage stabilizing circuit, wherein the nonlinear triggering circuit is connected with the diode rectifier U, the buffering crystal oscillator and quartz crystal oscillator are connected with the nonlinear triggering circuit, and the power logic voltage stabilizing circuit is connected between the diode rectifier U and the nonlinear triggering circuit in series. The logic protection amplification type hybrid trigging power source is characterized in that a logic protection amplification circuit is further connected between the power logic voltage stabilizing circuit and the nonlinear triggering circuit in series. According to the logic protection amplification type hybrid trigging power source for the power system fault detection device, the power logic voltage stabilizing circuit and the nonlinear triggering circuit are creatively combined, the circuit structure is greatly simplified, the radio-frequency interference of the circuit and the external radio-frequency interference can be reduced, and thus the manufacturing cost and maintaining cost are greatly lowered.
Owner:CHENGDU LEIKEER SCI & TECH
Logic-protection-emitter-coupling-type three-filter-type multi-output LED protection system
InactiveCN104994622AReduce power consumptionProtect power needsElectric light circuit arrangementOvervoltageShort circuit protection
The invention discloses a multiplexed-output LED protection system based on a logic protection emitter-coupled type amplifying circuit. The multiplexed-output LED protection system based on the logic protection emitter-coupled type amplifying circuit is mainly composed of a grid drive circuit, a logic control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2 and the like, wherein the power amplifier P1 and the power amplifier P2 are connected with the logic control circuit, and the pulse comparator U1 and the pulse comparator U2 are connected with the logic control circuit. The multiplexed-output LED protection system is characterized in that the logic protection emitter-coupled type amplifying circuit is connected between the positive electrode input end of a main error amplifier W1 and the positive electrode input end of a safety error amplifier W2 in series. The multiplexed-output LED protection system has the functions of short circuit protection, overvoltage protection and open circuit protection and is quite low in power consumption, and the power consumption is only one third that of a traditional protection circuit. Meanwhile, a multiplexed-output voltage-stabilized source is arranged, in this way, the electricity demand of a protection circuit can be guaranteed, external electromagnetic interface can be effectively avoided, and the flexibility and precision of control can be improved.
Owner:CHENGDU LEIKEER SCI & TECH
Composite protective logic amplification driving power supply for power fault detection
InactiveCN104993725ASimple structureReduce radio frequency interferenceEmergency protective circuit arrangementsAc-dc conversionRadio frequencyElectric power
Owner:CHENGDU LEIKEER SCI & TECH
Combined protection type power supply for logic protection amplification type power system fault detection device
InactiveCN104935192ASimple structureReduce radio frequency interferencePower amplifiersAc-dc conversionPower flowRadio frequency
The invention discloses a novel power supply for a logic protection amplification type power system fault detection device. The novel supply for the logic protection amplification type power system fault detection device mainly consists of a transformer diode trigger circuit, a primary crystal oscillator circuit, a secondary crystal oscillator circuit and a power logic control circuit connected with the transformer diode trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are connected with the transformer diode trigger circuit. The transformer diode trigger circuit consists of a diode rectifier U, a transformer T and a trigger circuit, wherein the primary crystal oscillator circuit and the secondary crystal oscillator circuit are both connected with the trigger circuit. The novel power supply is characterized in that a logic protection amplification circuit is further connected between the transformer T and the power logic control circuit in series. A circuit structure can be greatly simplified, and radio-frequency interference of the circuits and external radio-frequency interference are reduced, so that the manufacturing cost and maintenance cost are remarkably reduced. In addition, the novel power supply can further effectively overcome the delayed effect of a traditional power supply circuit, and the quality of the power supply can be effectively improved.
Owner:CHENGDU LEIKEER SCI & TECH
Combined protective logic amplification type blue light LED lamp protection system
InactiveCN104955225AReduce power consumptionProtect power needsElectric light circuit arrangementEnergy saving control techniquesOvervoltageShort circuit protection
The invention discloses a logic protection amplification type blue-light LED lamp protecting system. The logic protection amplification type blue-light LED lamp protecting system mainly comprises a grid drive circuit, a logic control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field-effect transistor MOS1, a field-effect transistor MOS2, a field-effect transistor MOS3, a field-effect transistor MOS4 and an oscillator. The power amplifiers P1 and P2 and the pulse comparators U1 and U2 are connected with the logic control circuit; grids of the field-effect transistors MOS1, MOS2, MOS3 and MOS4 are connected with the grid drive circuit; the oscillator is connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system is characterized in that a logic protection amplification circuit is also connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system has functions of short-circuit protection, overvoltage protection and open circuit protection and has low power consumption which is one third of power consumption of a conventional protection circuit.
Owner:CHENGDU LEIKEER SCI & TECH
Logic protection emitter coupling-type three-filtering nonlinear negative feedback switching voltage-stabilizing power supply
InactiveCN104967322AAutomatically adjust the output voltage valueThe output voltage value is stableDc-dc conversionElectric variable regulationNegative feedbackCoupling
The invention discloses a non-linear negative feedback switching regulated power supply based on a logic protection emitter-coupled mode. The non-linear negative feedback switching regulated power supply mainly includes a diode rectifier U, a power amplifier P1, a transformer T, a switching filtering circuit connected in series between the diode rectifier U and the power amplifier P1, a power output circuit connected with a secondary coil L2 of the transformer T, a transformation feedback circuit connected with a secondary coil L3 of the transformer T, a non-linear negative feedback circuit connected with the transformation feedback circuit, and the like. The non-linear negative feedback switching regulated power supply is characterized in that a logic protection emitter-coupled amplifying circuit is connected in series between a negative output end of the diode rectifier U and an out-phase end of the power amplifier P1. The non-linear negative feedback switching regulated power supply provided by the invention has the advantages that through the non-linear property of the non-linear negative feedback circuit, regulating transistors can be automatically kept at the edge of a saturation region, so that the radio-frequency interference from the circuit and an external device is effectively reduced, and the circuit structure is greatly simplified to achieve much lower manufacture and maintenance costs.
Owner:CHENGDU LEIKEER SCI & TECH
Unsaturation-type stabilized switching power supply based on phase sensitive detection circuit
InactiveCN104967335AAutomatically adjust the output voltage valueThe output voltage value is stableAc-dc conversionApparatus with intermediate ac conversionCarrier signalEngineering
The invention discloses a nonlinearity negative-feedback unsaturation stabilized switching power supply. The nonlinearity negative-feedback unsaturation stabilized switching power supply is characterized by being mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a power output circuit, a transformation feedback circuit, a nonlinearity negative-feedback circuit, a PWM controller and the like, the switch filter circuit is connected between the diode rectifier U and the power amplifier P1 in series, the power output circuit is connected with an auxiliary side coil L2 of the transformer T, the transformation feedback circuit is connected with an auxiliary side coil L3 of the transformer T, the nonlinearity negative-feedback circuit is connected with the transformer feedback circuit, and the PWM controller is connected with the power amplifier P1. The nonlinearity characteristic of the nonlinearity negative-feedback circuit is utilized, an adjusting tube is automatically located on the edge of a saturation area, the circuit and external radio-frequency interference is effectively reduced, the circuit structure is greatly simplified, and the manufacturing cost and the maintaining cost are greatly reduced.
Owner:CHENGDU JIESHENG TECH CO LTD
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