CN201536274U - ups synchronous controller - Google Patents

ups synchronous controller Download PDF

Info

Publication number
CN201536274U
CN201536274U CN2009202384547U CN200920238454U CN201536274U CN 201536274 U CN201536274 U CN 201536274U CN 2009202384547 U CN2009202384547 U CN 2009202384547U CN 200920238454 U CN200920238454 U CN 200920238454U CN 201536274 U CN201536274 U CN 201536274U
Authority
CN
China
Prior art keywords
circuit
signal output
way
pin
bus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009202384547U
Other languages
Chinese (zh)
Inventor
罗蜂
潘世高
黄敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Burke New Energy Technology Co.,Ltd.
Original Assignee
Foshan Baykee Electric Power Equipments Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan Baykee Electric Power Equipments Co Ltd filed Critical Foshan Baykee Electric Power Equipments Co Ltd
Priority to CN2009202384547U priority Critical patent/CN201536274U/en
Application granted granted Critical
Publication of CN201536274U publication Critical patent/CN201536274U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

The utility model discloses a UPS synchronous controller, which comprises a singlechip MCU control circuit, two bus UPS power supply output detection circuits, two synchronous signal output circuits, two switching signal output circuits and an auxiliary power supply for supplying work voltages to the circuits, wherein respective sampling signal outputs of two bus UPS power supply output detection circuits are connected onto corresponding signal input pins on the singlechip MCU control circuit, two synchronous signal output pins on the singlechip MCU control circuit are respectively connected onto the synchronous signal output circuits, and two switching signal output pins on the singlechip MCU control circuit are connected onto the switching signal output circuits. The UPS synchronous controller can synchronize two output circuits, and avoids instant instantaneous high voltage and ring current caused by inconsistent output phases during switching.

Description

A kind of UPS isochronous controller
Background technology
The utility model relates to a kind of isochronous controller, especially relates to a kind of isochronous controller that is used for the synchronous operation of dual bus UPS electric power system.
Background technology
Among general redundant parallel operation or dual bus electric power system, the detection of its phase place and locking all are to have adopted traditional phase-locked loop pattern, its weak point is that the phase difference of two-way output is bigger, and the circulation that can occur two output loops when switching is bigger, influences the stability of power work.
The utility model content
The purpose of this utility model provides a kind of UPS isochronous controller, can make two output loops reach synchronous effect.
The purpose of this utility model can realize by following technical measures: a kind of UPS isochronous controller comprises single-chip microprocessor MCU control circuit, two-way bus UPS power supply output detection circuit, two-way synchronizing signal output circuit, two-way switching signal output circuit and the accessory power supply that is used to provide above-mentioned each built-up circuit operating voltage; The sampled signal output separately of described two-way bus UPS power supply output detection circuit inserts signal input pin corresponding on the single-chip microprocessor MCU control circuit, two-way synchronizing signal output pin on single-chip microprocessor MCU control circuit correspondence separately is connected to the synchronizing signal output circuit, and the two-way switching signal output pin on single-chip microprocessor MCU control circuit correspondence separately is connected to the switching signal output circuit.
As to further improvement of the utility model, the utility model also comprises the condition indication circuit that is used to show two-way alternate current operation state, condition indication circuit is made up of current-limiting resistance and light-emitting diode, connects corresponding status indication information output pin on the single-chip microprocessor MCU control circuit.
Synchronizing signal output circuit described in the utility model and switching signal output circuit adopt optical coupling isolation circuit to export, optical coupling isolation circuit is by resistance, triode, photoelectrical coupler is formed, link to each other with two-way switching signal output pin with the two-way synchronizing signal output pin on the single chip machine controlling circuit, two-way synchronizing signal output pin on the single chip machine controlling circuit and two-way switching signal output pin drive the state of elementary Light-Emitting Diode in the triode control photoelectrical coupler by resistance, photoelectrical coupler secondary light induction triode is exported, and realizes that the control of synchronizing signal is isolated in interchange to two-way.
Because the utility model single-chip microprocessor MCU control circuit comes the wherein switching signal of one tunnel bus of corresponding output according to detected sampled signal, it is phase-locked to carry out synchronizing signal simultaneously, and with this synchronizing signal through synchronizing signal output circuit output synchronizing signal as another road bus, when the output of the second tunnel bus is synchronous, send the switching signal of the second tunnel bus.Therefore, inconsistent instantaneous high pressure that causes of output phase and circulation can not appear in the utility model when switching.
Description of drawings
Fig. 1 is the complete machine block diagram of utility model;
Fig. 2 be utility model complete machine main flow block diagram;
Fig. 3 is accessory power supply, the voltage sampling circuit schematic diagram of utility model;
Fig. 4 is the frequency and the phase detecting circuit schematic diagram of utility model;
Fig. 5 is the single-chip microprocessor MCU control circuit schematic diagram of utility model;
Embodiment
As shown in Figure 1, the utility model comprises the single-chip microprocessor MCU control circuit, first via bus UPS power supply output detection circuit, the second tunnel bus UPS power supply output detection circuit, first via synchronizing signal output circuit, the second tunnel synchronizing signal output circuit, first via switching signal output circuit, the second tunnel switching signal output circuit, condition indication circuit and the accessory power supply that is used to provide above-mentioned each built-up circuit operating voltage; The employing signal output separately of two-way bus UPS power supply output detection circuit inserts signal input pin corresponding on the single-chip microprocessor MCU control circuit; Two-way synchronizing signal output pin on single-chip microprocessor MCU control circuit correspondence separately is connected to the synchronizing signal output circuit; Two-way switching signal output pin on single-chip microprocessor MCU control circuit correspondence separately is connected to the switching signal output circuit; Simultaneously, the demonstration of single-chip microprocessor MCU control circuit control indicating circuit.
The utility model adopts the working method of firsting impressions are strongest, when first via bus is opened earlier, this isochronous controller at first detects the output of first via bus, voltage and frequency to first via bus are measured, if detect normal, then send the switching signal of first via bus, and light the indicator light on this road, carry out genlock simultaneously, and send synchronizing signal to the second tunnel bus, make the phase place and the first via of the second tunnel bus synchronous, when the output frequency that detects the second tunnel bus is consistent with phase place, send the switching signal of the second tunnel bus; If the second tunnel bus is start earlier, then phase-locked the second tunnel bus is sent synchronizing signal to first via bus,
As shown in Figure 2, MCU software control FB(flow block) in the utility model, idiographic flow is: enter init state after starting working, begin to carry out the two-way input and detect, circuit adopts the working method of firsting impressions are strongest, powering on simultaneously as the two-way bus, then to change first via bus be main, then main electrical waveform is analyzed, judged whether current loop voltage is unusual, if electric voltage exception, then put main electrical anomaly sign, simultaneously slave is switched to main frame; If voltage is not unusual, then do not send the output control signal, all send synchronous control signal afterwards to slave, through behind measurement module and the display module again to the main electrical waveform analysis corresponding step behind the Xingqi of going forward side by side.
As shown in Figure 3, be the accessory power supply schematic diagram of utility model, mainly by power supply CN1, CN2, switch SW 1, SW2, fuse F1, F2, capacitor C 1~C4, rectifier diode D1, D4, D5, D8, transformer T1, T2, general voltage stabilizing chip U1 is formed by connecting.Power supply CN1 and switch SW 1, fuse F1, primary coil of transformer T1 is formed series loop; Power supply CN2 and switch SW 2, fuse F2, primary coil of transformer T2 is formed series loop; The anode of the terminating diode D1 of the same name of transformer T1 secondary coil, behind the filter circuit that the anode of the different name terminating diode D4 of transformer T1 secondary coil, the negative pole of diode D1, D4 compose in parallel by capacitor C 1 and C2 as the input Vin of pressurizer U1; The anode of the terminating diode D5 of the same name of transformer T2 secondary coil, the anode of the different name terminating diode D8 of transformer T2 secondary coil, as the input Vin of pressurizer U1, realize CN1 and CN2 two-way Alternating Current Power Supply behind the filter circuit that the negative electrode of diode D5, D8 also composes in parallel by capacitor C 1 and C2; Output 5V DC power supply is for the single-chip microprocessor MCU control circuit behind the filter circuit that the output 3 of pressurizer U1 composes in parallel through capacitor C 3, C4, the middle equal ground connection that winds the line of the secondary coil of the GND pin of pressurizer U1, capacitor C 1 negative pole, the capacitor C 3 in parallel with the C2 negative pole in parallel with C4, transformer T1.Also available other voltage-stabilizing output circuits commonly used of above-mentioned accessory power supply are realized the output of 5V direct current.
Every road bus UPS power supply output detection circuit is by voltage sampling circuit, frequency and phase place are surveyed the inspection circuit and are formed, voltage sampling circuit as shown in Figure 3, transformer coil in the present embodiment in the voltage sampling circuit common source circuit, mainly by transformer T1 secondary coil and rectifier diode D2, D3, D6, D7 is formed by connecting, the end of the same name of transformer T1 secondary coil exchanges the sampling input of AC1 as the first via, connect the anode of diode D2, the anode of the different name terminating diode D3 of transformer T1 secondary coil, diode D2, the negative pole output of D3 is as the sampled voltage signal U-AC1 of first via alternating voltage; The end of the same name of transformer T2 secondary coil is imported as the second tunnel sampling that exchanges AC2, connect the anode of diode D6, the anode of the different name terminating diode D7 of transformer T2 secondary coil, the negative pole output of diode D6, D7 is as the sampled voltage signal U-AC2 of the second road alternating voltage.
As shown in Figure 4, for frequency and phase place survey inspection circuit theory diagrams, mainly by resistance R 3~R6, R9, R10, R13, R17~R20, R23, R27, triode Q2, Q4, capacitor C 5, C7, operational amplifier U3A, U3B are formed by connecting.Wherein be connected to in-phase end 3 pin that resistance R 5 is delivered to amplifier U3A after the loop dividing potential drop of the sampled signal of first via interchange AC1 by R4 and R9 series connection ground connection composition, the anti-phase effect of U3A holds 2 pin by resistance R 13 ground connection; Positive feedback resistor R3 is connected between output 1 pin of in-phase end 3 pin of amplifier U3A and U3A, to prevent producing repeatedly saltus step at the zero crossing offset voltage, the AC1 that is used for frequency and phase-detection carried out the square-wave signal that zero balancing produces a zero crossing saltus step through amplifier U3A, this signal is received the base stage of triode Q2 by resistance R 10 by output 1 pin of U3A, the collector electrode of triode Q2 is linked into 13 pin of single-chip microprocessor MCU through filtering capacitor C 5 back output F-AC1, and through the 5V level of resistance R 6 outputs for single-chip microcomputer, the grounded emitter of triode Q2.The frequency of the second tunnel interchange AC2 is identical with the first via with principle with phase place survey inspection loop method of attachment, just connects different components and parts and corresponding connecting pin, specifically sees accompanying drawing, and above-mentioned operational amplifier can be selected general double operational integrated chip for use; Same said frequencies and phase place survey inspection also available other a-c cycles commonly used of circuit and phase place survey inspection circuit is realized.
As shown in Figure 5, single-chip microprocessor MCU control circuit schematic diagram for utility model, mainly by single-chip microprocessor MCU, crystal oscillator CY1, resistance R 1, R2, R7, R8, R11, R12, R14~R16, R21, R22, R24, R25, R28~R34, capacitor C 6, C8~C12, LED 1~LED3, diode D9, D10, triode Q1, Q3, Q5, Q6 and photoelectrical coupler U2, U4, U6, U7 form.Single-chip microprocessor MCU adopts the PIC16F73 of MICROCHIP company.9,10 pin that crystal oscillator CY1 and capacitor C 10, C11 form crystal oscillating circuit and single-chip microprocessor MCU connect to form the clock internal circuit; Power supply is by resistance R 33 series capacitance C12 ground connection, and 1 pin of single-chip microprocessor MCU is connected between capacitor C 12 and the resistance R 33 and forms reset circuit; The A/D that the sampled signal U-AC1 of first via alternating voltage inserts single-chip microcomputer U5 inside after by the resistance R 24, R29 dividing potential drop of series connection ground connection changes 3 pin, voltage measurement for first via output AC, the 5V power supply is by the series connection road of the high-frequency filter capacitor C8 composition of clamp diode D10 and ground connection, insert 3 pin of single-chip microcomputer U5 between diode D10 and the capacitor C 8 simultaneously, to leach the clutter in the sampled signal; The A/D that the sampled signal U-AC2 of the second road alternating voltage inserts single-chip microcomputer U5 inside after by the resistance R 25, R30 dividing potential drop of series connection ground connection changes 2 pin, it is the voltage measurement of the second road output AC, the 5V power supply is by the series connection road of the high-frequency filter capacitor C9 composition of clamp diode D9 and ground connection, insert 2 pin of single-chip microcomputer U5 between diode D9 and the capacitor C 9 simultaneously, to leach the clutter in the sampled signal; F-AC1 is a first via incoming frequency phase measurement signal, is connected to 13 pin of the inner CCP1 of single-chip microcomputer; F-AC2 is the second tunnel incoming frequency phase measurement signal, is connected to 12 pin of the inner CCP2 of single-chip microcomputer; 28 pin of single-chip microcomputer U5 are as first via AC synchronous control signal output ends, be connected to the base stage of triode Q1 by resistance R 8, the grounded emitter of Q1, the collector electrode of Q1 connects the negative pole of light-emitting diode among the photoelectrical coupler U2, the 5V power supply connects the positive pole of this diode of giving out light by resistance R 2, the grounded emitter of phototriode among the photoelectrical coupler U2, collector electrode meet the resistance R 1 back output control signal UPS1-SYNC that is added with the 5V power supply; 27 pin of single-chip microcomputer U5 are that the first via exchanges the switch-over control signal output, export control signal UPS1-SW behind the circuit by the same structure of forming with described R8, R1, R2, Q1, U2 is made up of resistance R 16, R12, R14, triode Q3, photoelectrical coupler U4; 26 pin of single-chip microcomputer U5 are the second the tunnel to exchange the switch-over control signal output, export control signal UPS2-SYNC behind the circuit by the same structure of forming with described R8, R1, R2, Q1, U2 is made up of resistance R 28, R21, R22, triode Q5, photoelectrical coupler U6; 25 pin the second tunnel of single-chip microcomputer U5 exchange the switch-over control signal output, export control signal UPS2-SW behind the circuit by the same structure of forming with described R8, R1, R2, Q1, U2 is made up of resistance R 34, R31, R32, triode Q6, photoelectrical coupler U7.
Condition indication circuit is made up of current-limiting resistance and light-emitting diode, power supply inserts the positive pole of light-emitting diode through current-limiting resistance, the negative pole of light-emitting diode connects single-chip microcomputer U5 and goes up corresponding status indication information output pin, the 5V power supply is through the positive pole of current-limiting resistance R7 access LED 1, and the negative pole of LED 1 inserts 24 pin of single-chip microprocessor MCU; The 5V power supply is through the positive pole of current-limiting resistance R11 access LED 2, and the negative pole of LED 2 inserts 23 pin of single-chip microprocessor MCU; The 5V power supply is through the positive pole of current-limiting resistance R15 access LED 3, and the negative pole of LED 3 inserts 22 pin of single-chip microprocessor MCU.
1 pin is a reset circuit, by R33 C12 is charged when powering on, and finishes to reset; 2,3 pin are inner A/D conversion, and the sample conversion of two-way input voltage is become digital signal, carry out computing; 9,10 pin and external circuit are formed single-chip microprocessor MCU clock internal circuit; The CCP1 of 13 pin single-chip microcomputer inside, the capture function pin receives first via incoming frequency phase measurement signal F-AC1, becomes measure cycle time to AC signal, and produces interruption in the zero crossing skip signal; The CCP2 of 12 pin single-chip microcomputer inside, the capture function pin receives the second tunnel incoming frequency phase measurement signal F-AC2, becomes measure cycle time to AC signal, and produces interruption in the zero crossing skip signal; 28 pin are first via AC synchronous control signal output ends, when the second the tunnel exchanges to master control, send synchronizing signal and carry out phase-locked synchronous to first via main frame; 27 pin are first via AC synchronous control signal output ends, when the second the tunnel exchanges to master control, and the control switching signal that single-chip microcomputer sends behind phase-locked synchronous No. the second main frame of first via main frame; 26 pin are the second tunnel AC synchronous control signal output ends, when the first via exchanges to master control, send synchronizing signal and carry out phase-locked synchronous to first via main frame; 25 pin are the second tunnel AC synchronous control signal output ends, when the first via exchanges to master control, and the control switching signal that single-chip microcomputer sends behind the phase-locked synchronous first via main frame of No. the second main frame; 24 pin are that the first via exchanges the master control indicator light, exchange and run earlier or the second tunnel be after main frame is deactivated when single-chip microcomputer detects the first via, and just often, 24 pin transfer low level to by high level, and LED1 lights by resistance R 7 current limlitings; 23 pin are the second tunnel interchange master control indicator light, and the second tunnel interchange is opened earlier or the first via is after main frame is deactivated when single-chip microcomputer detects, and just often, 23 pin transfer low level to by high level, and LED2 lights by resistance R 11 current limlitings; 22 pin are two-way AC synchronous run indicator, exchange all normally when single-chip microcomputer detects two-way, and when finishing phase-locked switching, 22 pin transfer low level to by high level, and LED3 lights by resistance R 15 current limlitings.

Claims (3)

1. a UPS isochronous controller is characterized in that: comprise single-chip microprocessor MCU control circuit, two-way bus UPS power supply output detection circuit, two-way synchronizing signal output circuit, two-way switching signal output circuit and the accessory power supply that is used to provide above-mentioned each built-up circuit operating voltage; The sampled signal output separately of described two-way bus UPS power supply output detection circuit inserts signal input pin corresponding on the single-chip microprocessor MCU control circuit; Two-way synchronizing signal output pin on single-chip microprocessor MCU control circuit correspondence separately is connected to the synchronizing signal output circuit; Two-way switching signal output pin on single-chip microprocessor MCU control circuit correspondence separately is connected to the switching signal output circuit;
The single-chip microprocessor MCU control circuit comes the wherein switching signal of one tunnel bus of corresponding output according to detected sampled signal, and it is phase-locked to carry out synchronizing signal simultaneously; And with this synchronizing signal through synchronizing signal output circuit output synchronizing signal as another road bus, when the output of the second tunnel bus is synchronous, send the switching signal of the second tunnel bus.
2. UPS isochronous controller according to claim 1, it is characterized in that: also comprise the condition indication circuit that is used to show two-way alternate current operation state, condition indication circuit is made up of current-limiting resistance and light-emitting diode, connects corresponding status indication information output pin on the single-chip microprocessor MCU control circuit.
3. UPS isochronous controller according to claim 1, it is characterized in that: described synchronizing signal output circuit and switching signal output circuit adopt optical coupling isolation circuit to export, optical coupling isolation circuit is by resistance, triode, photoelectrical coupler is formed, link to each other with two-way switch-over control signal output pin with the two-way synchronous control signal output pin on the single chip machine controlling circuit, two-way synchronous control signal output pin on the single chip machine controlling circuit and two-way switch-over control signal output pin drive the state of elementary Light-Emitting Diode in the triode switch control photoelectrical coupler by resistance, secondary light induction triode is exported, and realizes that the control of synchronizing signal is isolated in interchange to two-way.
CN2009202384547U 2009-11-04 2009-11-04 ups synchronous controller Expired - Lifetime CN201536274U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202384547U CN201536274U (en) 2009-11-04 2009-11-04 ups synchronous controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202384547U CN201536274U (en) 2009-11-04 2009-11-04 ups synchronous controller

Publications (1)

Publication Number Publication Date
CN201536274U true CN201536274U (en) 2010-07-28

Family

ID=42536048

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202384547U Expired - Lifetime CN201536274U (en) 2009-11-04 2009-11-04 ups synchronous controller

Country Status (1)

Country Link
CN (1) CN201536274U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102097855A (en) * 2010-12-28 2011-06-15 广东易事特电源股份有限公司 Parallel running phase lock method for digital-controlled uninterruptible power supply
CN104503523A (en) * 2014-10-31 2015-04-08 广东易事特电源股份有限公司 UPS (uninterrupted power supply) parallel output system, master and slave units of UPS parallel output system and UPS parallel output voltage control method and device
CN106300625A (en) * 2016-08-31 2017-01-04 山东鼎讯智能交通股份有限公司 The double standby power supply of traffic signaling equipment direct current
CN106961153A (en) * 2016-12-02 2017-07-18 安徽博微智能电气有限公司 A kind of UPS exchanges Parallel Control circuit
CN112087139A (en) * 2019-06-12 2020-12-15 台达电子工业股份有限公司 Isolated converter with high step-up ratio
CN112087150A (en) * 2019-06-12 2020-12-15 台达电子工业股份有限公司 Isolated boost converter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102097855A (en) * 2010-12-28 2011-06-15 广东易事特电源股份有限公司 Parallel running phase lock method for digital-controlled uninterruptible power supply
CN102097855B (en) * 2010-12-28 2013-06-05 广东易事特电源股份有限公司 Parallel running phase lock method for digital-controlled uninterruptible power supply
CN104503523A (en) * 2014-10-31 2015-04-08 广东易事特电源股份有限公司 UPS (uninterrupted power supply) parallel output system, master and slave units of UPS parallel output system and UPS parallel output voltage control method and device
CN104503523B (en) * 2014-10-31 2016-06-15 广东易事特电源股份有限公司 UPS Parallel opertation system and main frame therein and from machine, UPS Parallel opertation voltage control method and device
CN106300625A (en) * 2016-08-31 2017-01-04 山东鼎讯智能交通股份有限公司 The double standby power supply of traffic signaling equipment direct current
CN106961153A (en) * 2016-12-02 2017-07-18 安徽博微智能电气有限公司 A kind of UPS exchanges Parallel Control circuit
CN106961153B (en) * 2016-12-02 2023-05-12 安徽博微智能电气有限公司 UPS alternating current parallel control circuit
CN112087139A (en) * 2019-06-12 2020-12-15 台达电子工业股份有限公司 Isolated converter with high step-up ratio
CN112087150A (en) * 2019-06-12 2020-12-15 台达电子工业股份有限公司 Isolated boost converter
CN112087150B (en) * 2019-06-12 2022-02-18 台达电子工业股份有限公司 Isolated boost converter

Similar Documents

Publication Publication Date Title
CN201536274U (en) ups synchronous controller
CN106208714B (en) Synchronous rectifying switching power source and control method
CN201724988U (en) Input phase failure detector for power unit of high-voltage frequency converter
CN102983554A (en) Sampling short-circuit protection circuit for high-power factor driving system and method
CN110191549A (en) A kind of accurate time switch lamp of LED and its driving circuit of accurate timing
CN211508931U (en) Power supply identification conversion circuit and air conditioner
CN101925214A (en) LED constant current circuit and method
CN105932883A (en) Power electronic transformer based on energy injection type direct AC-AC converter
CN105719906A (en) High-precision time relay and control method thereof
CN201063054Y (en) Isolated circuit for detecting power supply phase
CN201078757Y (en) Electric leakage and electric larceny recognition indicating circuit for single phase AC power supply circuitry
CN101170283A (en) A voltage self-adapted commutation circuit
CN206594279U (en) A kind of Switching Power Supply life-span tester
CN202218455U (en) Single light control device used for urban lighting
CN104836239B (en) Low-voltage intelligent synchro switch
CN202471823U (en) Photo-coupling isolation line voltage zero-detection circuit
CN206574646U (en) A kind of dial-up type time relay
CN202256445U (en) Voltage detection circuit
CN208076688U (en) A kind of air-conditioning system power quality detecting system
CN203164269U (en) Portable voltage sag testing tool
CN202421472U (en) On-line detection circuit of uninterrupted power backup battery
CN201967202U (en) LED driver without electrolytic capacitors
CN207454883U (en) A kind of MBUS control circuits for temperature-sensing valve
CN206559689U (en) A kind of LED switch detects circuit
CN201035349Y (en) Cis-position master-slave synchronisation control circuit device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: FOSHAN BAIKEXIN NEW ENERGY TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: FOSHAN BAYKEE ELECTRIC POWER EQUIPMENTS CO., LTD.

Effective date: 20150811

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150811

Address after: Chancheng District Zhangcha road 528000 Guangdong city of Foshan province No. 119 big top industrial zone

Patentee after: Foshan Burke New Energy Technology Co.,Ltd.

Address before: 528051, No. 1, building 119, No. 2, No. 1, Zhangcha, Guangdong, Foshan

Patentee before: Foshan Baykee Electric Power Equipments Co., Ltd.

C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 528000, No. 115, No. four, No. seven, Zhangcha Road, Chancheng District, Guangdong, Foshan Province, China, two to the third floor

Patentee after: Foshan Burke New Energy Technology Co.,Ltd.

Address before: Chancheng District Zhangcha road 528000 Guangdong city of Foshan province No. 119 big top industrial zone

Patentee before: Foshan Burke New Energy Technology Co.,Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100728