CN201985762U - Zero power consumption standby circuit and electrical appliance equipment comprising the same - Google Patents

Zero power consumption standby circuit and electrical appliance equipment comprising the same Download PDF

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Publication number
CN201985762U
CN201985762U CN2011200177658U CN201120017765U CN201985762U CN 201985762 U CN201985762 U CN 201985762U CN 2011200177658 U CN2011200177658 U CN 2011200177658U CN 201120017765 U CN201120017765 U CN 201120017765U CN 201985762 U CN201985762 U CN 201985762U
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CN
China
Prior art keywords
circuit
power supply
transformer
consumption standby
power
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Expired - Lifetime
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CN2011200177658U
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Chinese (zh)
Inventor
高宽志
曲泰元
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Qingdao Hisense Electronics Co Ltd
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Qingdao Hisense Electronics Co Ltd
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Priority to CN2011200177658U priority Critical patent/CN201985762U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The utility model discloses a zero power consumption standby circuit and electrical appliance equipment comprising the circuit. The zero power consumption standby circuit comprises a main loop of a power supply, wherein the main loop of the power supply comprises an alternating current power supply terminal, a rectification circuit, a transformer which carries out depressurization transformation to the direct current power supply output by the rectification circuit, and a power supply management chip for controlling the switching frequency of the transformer; the transformer outputs the working power supply required by the main control circuit; the alternating current power supply terminal and the alternating current power supply transmission line of a rectification circuit alternating current side are also connected with an alternating current contactors in series; the alternating current contactors are switched on and off under the control action of a switching signal output by the main control circuit; the alternating current power supply terminal is simultaneously connected with a rectifier bridge for starting up; and the direct current side of the rectifier bridge is connected with the high-voltage power supply end of a power management chip by a time delay release switch and is also connected with the primary coil of the transformer. By adopting the circuit, batteries or super capacitors are not required to serve as a backup power supply, and thus the purpose of 0W standby can be really realized.

Description

A kind of Zero consumption standby circuit and have the electric equipment of described circuit
Technical field
The utility model belongs to the stand-by circuit technical field, specifically, and the stand-by circuit of no power waste and the electric equipment that adopts described Zero consumption standby circuit design when relating to a kind of standby.
Background technology
Along with global climate warms day by day, energy-saving and emission-reduction have become the most important thing of national governments' work, and particularly closely bound up with daily life household electric appliances are pulled to the teeth of the storm especially.In American-European market, low standby power loss becomes the pass that electronic product is sold to this market with safety, EMI, and high efficiency, low-power consumption have become household appliances one of necessary key factor of considering on stream.Chief component as household appliances---power circuit, it is after household appliances enter holding state, the other parts circuit all enters closes or resting state, and power circuit is during this time still in running order, produce power consumption, this power consumption occupies very big share in the stand-by power consumption of whole system, the stand-by power consumption that therefore reduces power circuit is an important ring of control household appliances Overall Power Consumption.
The way of the reduction device standby power consumption that generally adopts is the efficient when improving the power circuit standby at present, the electric current that load needs when reducing standby, but can not be fully the input dump, so can not accomplish 0W to stand-by power consumption.Now minimum stand-by power consumption is 0.1W, employing be the design of cutting off governor circuit, promptly finish remote control standby and start with little MCU by increasing standby.And for the stand-by circuit of the zero stand-by power consumption of present proposition, such as number of patent application a kind of mains switch and control device of realizing Zero-power-consumption standby of 200810067647.0, it is actually and adopts a key switch and the two-in-one electromagnetic switch of contactor to be connected in the main power source current supply circuit, need battery to finish remote control standby and start in the system, it is not real Zero-power-consumption standby, need charge the battery the power consumption when also having increased operate as normal during operate as normal.Number of patent application is the stand-by circuit of 200820201609.5 household electrical appliance standby zero-power, only is to realize Zero-power-consumption standby at zero cross detection circuit, and complete machine can not be realized the standby zero-power; Moreover remove the part air-conditioning, refrigerator etc. need outside the zero cross signal, and most of household electrical appliance do not need zero cross detection circuit, so its scope of application is very limited.And for number of patent application the television set of 200820234836.8 Zero-power-consumption standby, it then is the electric that the storage capacitor that adopts 10000uF needs continuous service during for standby, can only standby 24 hours, after electric capacity discharges fully, can only be by manually pressing the mechanical switch start, in fact to similar as standby standby power with battery.
Therefore, how realizing the real Zero-power-consumption standby of electric equipment, and improve the suitable application area of stand-by circuit, is a subject matter to be solved in the utility model.
The utility model content
The purpose of this utility model is to provide a kind of Zero consumption standby circuit, makes electric equipment no power waste when standby, energy savings.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of Zero consumption standby circuit, comprise the power supply major loop, in described power supply major loop, include ac power supply terminal, rectification circuit and the DC power supply of rectification circuit output is carried out the transformer of decompression transformation, and the power management chip that is used for the control transformer switching frequency, by the required working power of described transformer output governor circuit; Also be in series with A.C. contactor in the AC power transmission line of described ac power supply terminal and rectification circuit AC side, described A.C. contactor is break-make under the control action of the switching signal of governor circuit output; Described ac power supply terminal connects start simultaneously and use rectifier bridge, and the DC side of described rectifier bridge connects the high voltage supply end of described power management chip on the one hand by the release-push of delaying time, and connects the primary coil of described transformer on the other hand.
Wherein, described time-delay release-push preferably adopts the touch-switch that discharges automatically after the closed back time-delay 100mS to carry out circuit design.
Further, at the elementary ancillary coil that also is provided with of described transformer, connect storage capacitor, the output DC source is the storage capacitor charging, and the positive pole of described storage capacitor connects the low-tension supply end of described power management chip simultaneously.
Preferably, between the positive pole of described ancillary coil and storage capacitor, also be connected with the diode that is used to prevent current reversal.
Further again, the normally opened contact of described A.C. contactor is connected in the AC power transmission line of described rectification circuit AC side, connect the switch ways of a switch element in the current supply circuit of ac contactor coil, the control end of described switch element receives the switching signal of governor circuit output.
Further again, in described power supply major loop, also include electrochemical capacitor and switching diode, described electrochemical capacitor is connected in parallel on the DC side of rectification circuit, and the positive pole of electrochemical capacitor connects the anode of switching diode, and the negative electrode of switching diode connects the primary coil of transformer.
Further, the low-voltage dc power supply of the secondary coil output by described transformer transfers to the negative electrode of a three-terminal voltage-stabilizing pipe on the one hand through the emission side of an optocoupler, the plus earth of described three-terminal voltage-stabilizing pipe, by after the bleeder circuit dividing potential drop, transfer to the reference utmost point of described three-terminal voltage-stabilizing pipe on the other hand; The sensitive side of described optocoupler is connected between the feedback end and ground of power management chip.
Preferably, also be connected with RC and absorb circuit on described three-terminal voltage-stabilizing pipe, wherein, RC absorbs between the dividing potential drop node that resistance in the circuit is connected the reference utmost point of three-terminal voltage-stabilizing pipe and bleeder circuit, and electric capacity is connected in parallel on the negative electrode of three-terminal voltage-stabilizing pipe and with reference between the utmost point.
In order to absorb the inverse electromotive force that the switching circuit that is connected with the primary coil of transformer produces at shutdown moment, preferably absorb circuit at the two ends of described transformer one group of RC in parallel; Simultaneously, the low-voltage dc power supply of exporting by the secondary coil induction of described transformer exports governor circuit to through switching diode and filter circuit, and one group of RC also preferred in parallel absorbs circuit at the two ends of described switching diode, with the spike in the absorption circuit.
Based on above-mentioned Zero consumption standby circuit structure, the utility model provides a kind of electric equipment that adopts described Zero consumption standby circuit design again, comprise power supply major loop and governor circuit, in described power supply major loop, include ac power supply terminal, rectification circuit and the DC power supply of rectification circuit output is carried out the transformer of decompression transformation, and the power management chip that is used for the control transformer switching frequency, by the required working power of described transformer output governor circuit; Wherein, also be in series with A.C. contactor in the AC power transmission line of described ac power supply terminal and rectification circuit AC side, described A.C. contactor is break-make under the control action of the switching signal of governor circuit output; Described ac power supply terminal connects start simultaneously and use rectifier bridge, and the DC side of described rectifier bridge connects the high voltage supply end of described power management chip on the one hand by the release-push of delaying time, and connects the primary coil of described transformer on the other hand.By the series connection A.C. contactor of conducting after device power-up only in traditional power supply major loop, thus when the electric equipment standby by cutting off the purpose of design that outside Alternating Current Power Supply reaches the complete machine no power waste.And by setting up start rectifier bridge and time-delay release-push, then can in the start process of electric equipment, control the operation that powers on of part of devices in the power supply major loop, the required working power of output governor circuit with the adhesive of control A.C. contactor, makes the power supply major loop drop into normal operating conditions.
Compared with prior art, advantage of the present utility model and good effect are: stand-by circuit of the present utility model is simple in structure, with low cost, be applicable in the domestic electric appliances such as computer, washing machine, kitchen appliance, after the program running of electric equipment is finished, complete machine can cut off Alternating Current Power Supply automatically, consumed power fully no longer, also need not to adopt battery or super capacitor power supply in support, can realize the 0W standby veritably, thereby satisfy the designing requirement of present domestic electric appliance energy-conserving and environment-protective.
After reading the detailed description of the utility model execution mode in conjunction with the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the Zero consumption standby circuit that proposes of the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Embodiment one, and the Zero consumption standby circuit of present embodiment can obtain by simple modifications on the basis of conventional switch power circuit, referring to shown in Figure 1.Wherein, with traditional switching power circuit as the power supply major loop, in electric equipment start back for the governor circuit in the equipment provides its operation required working power, can specifically comprise the ac power supply terminal XP1 that is used for external electric main, with AC power convert to DC power supply rectification circuit, the high-voltage DC power supply of rectification circuit rectification output is carried out the transformer T1 of decompression transformation and the power management chip U1 that is used for the switching frequency of transformer T1 is controlled etc.In order to realize the standby zero-power, the present embodiment A.C. contactor J1 that connects in the power supply major loop as shown in Figure 1, can be specifically be connected on the normally opened contact of A.C. contactor J1 in the AC power transmission line of ac power supply terminal XP1 and rectification circuit AC side.When the electric equipment standby, by the normally opened contact of A.C. contactor J1 is disconnected, and then can cut off outside Alternating Current Power Supply, the internal circuit that makes electric equipment is consumed power no longer, reaches the purpose of Zero-power-consumption standby thus.And in the electric equipment normal course of operation, can be by the switching signal ON/OFF control A.C. contactor J1 adhesive of governor circuit output, to be communicated with described power supply major loop, by each uses the required working power of electric loading in the power supply major loop conversion output electric equipment, and then guarantee that electric equipment normally moves.
As a kind of preferred design, the switch element of can in the coil power supply loop of described A.C. contactor J1, connecting, such as NPN type triode V1 shown in Figure 1, control end (such as the base stage of NPN type triode V1) by switch element connects governor circuit, such as CPU, receive the switching signal ON/OFF of governor circuit output.After the program running of electric equipment finished, governor circuit was exported standby signal OFF automatically, and control switch element V1 disconnects, and made the coil blackout of A.C. contactor J1, and normally opened contact disconnects, and cut off external ac power source; And when governor circuit powered on, by output starting-up signal ON, control switch element V1 closure was communicated with the current supply circuit of A.C. contactor J1, thereby made its normally opened contact adhesive, introduced the external communication power supply, was back level electric.
So, how to change electric equipment over to the start running status from holding state? present embodiment increases the start rectifier bridge again on the basis of power supply major loop, as shown in Figure 1, can adopt four switching diode VD11~VD14 to form full bridge rectifier, AC side connects ac power supply terminal XP1, fuse F1 betwixt perhaps further connects, DC side connects the high voltage supply end HV of power management chip U1 on the one hand by the time-delay release-push KN1 of series connection, the primary coil that connects transformer T1 on the other hand, such as the end of the same name of transformer T1 primary coil, the different name end of primary coil can pass through metal-oxide-semiconductor Q1 ground connection.
In the present embodiment, described K switch N1 can adopt the touch-switch that has the release function of delaying time to carry out circuit design, the touch-switch that preferably adopts automatic time delay 100mS to discharge.When needs start the electric equipment operation, push described touch-switch KN1 and make its closure, after rectifier bridge VD11~VD14 is rectified into DC power supply with the electric main of outside, provide high voltage supply for power management chip U1 on the one hand, make its operation that powers on, export the pwm signal of certain duty ratio by its DRV terminal, the metal-oxide-semiconductor Q1 break-make that control is connected with the primary coil of transformer T1; Primary coil to transformer T1 provides high-voltage DC power supply on the other hand, after transformer T1 step-down is handled, and the described working power of output back level governor circuit.After governor circuit powers on, output starting-up signal ON, control A.C. contactor J1 adhesive makes the power supply major loop enter running status.At this moment, the direct current of exporting by the rectification circuit of being made up of diode VD1~VD4 charges to the electrochemical capacitor E1 that is connected in parallel on its DC side, form high-voltage DC power supply by primary coil from the high voltage supply end HV power supply of switching diode VD16 to transformer T1 and power management chip U1, keep the power supply major loop and normally move, be continuously governor circuit and other electric of back level.
In order to guarantee that power management chip U1 reliably starts, present embodiment is at the elementary ancillary coil To that set up again of transformer T1, as shown in Figure 1, direct voltage by ancillary coil To induction output is storage capacitor E4 charging through resistance R 7, switching diode VD8, VD9 and resistance R 10, and the positive pole of described storage capacitor E4 connects the low-tension supply end VCC of power management chip U1 simultaneously.Described switching diode VD8, VD9 can play the effect that the electric charge that prevents among the storage capacitor E4 is released to ancillary coil To in circuit.When electric equipment starts, power management chip U1 charges to storage capacitor E4 by its low-tension supply end VCC, after electric charge on the storage capacitor E4 makes circuit start, the primary coil break-make of power management chip U1 output pwm signal control transformer T1, at this moment, energy on the storage capacitor E4 is replenished for it by the ancillary coil To of transformer T1 primary side, thereby no longer needs start-up circuit.
The low-voltage dc power supply of changing output by the secondary coil of transformer T1 is after rectifier diode VD15, storage capacitor E5~E7 and filter circuit processing, the DC power supply S5V of stable output, by dc power supply terminal XP2 backward a level governor circuit export its required dc supply.In order to realize the stable output of DC power supply S5V, present embodiment also is connected with feedback circuit on the low-voltage dc power supply transmission line that the secondary coil with transformer T1 is connected, as shown in Figure 1, comprise chief components such as optocoupler U3, three-terminal voltage-stabilizing pipe U2 and bleeder circuit.Wherein, the low-voltage dc power supply of the secondary coil output by transformer T1 is through the emission side of resistance R 18 series connection optocoupler U3, further be connected to the negative electrode of three-terminal voltage-stabilizing pipe U2 then, the plus earth of described three-terminal voltage-stabilizing pipe U2 connects the dividing potential drop node of the bleeder circuit of being made up of resistance R 20, R21, R22 with reference to the utmost point.Described bleeder circuit is connected between described low-voltage dc power supply transmission line and the ground; The sensitive side of optocoupler U3 then is connected between the feedback end FB and ground of power management chip U1.
In the process of transformer T1 step-down output, if pass through the direct voltage instability of the secondary coil output of transformer T1, then the conducting amount of three-terminal voltage-stabilizing pipe U2 can change, the electric current that causes flowing through optocoupler U3 emission side changes, be reflected to the sensitive side of optocoupler U3, and then cause that the electric current of power management chip U1 feedback end FB changes.The feedback current that power management chip U1 basis receives is determined the duty ratio of the pwm signal of its output, and then the switching frequency of control transformer T1, makes the low-voltage dc power supply by transformer T1 output can be stabilized in the back level with on the desired amplitude of electric loading.
In order effectively to suppress to be incorporated into the spike in the power supply major loop, present embodiment also is connected with RC and absorbs circuit on described three-terminal voltage-stabilizing pipe U2, as shown in Figure 1, comprise resistance R 23 and capacitor C 11.Wherein, resistance R 23 is connected between the dividing potential drop node of the reference utmost point of three-terminal voltage-stabilizing pipe U2 and bleeder circuit; Capacitor C 11 is connected in parallel on the negative electrode of three-terminal voltage-stabilizing pipe U2 and with reference between the utmost point, plays the effect that absorbs spike jointly.
For the inverse electromotive force that metal-oxide-semiconductor Q1 produces at shutdown moment, present embodiment adopts the RC absorption circuit of being made up of resistance R 4, R5 and capacitor C 3 to absorb elimination, as shown in Figure 1, is connected in parallel on the two ends of transformer T1 primary coil.In order to prevent that high-voltage DC power supply from absorbing circuit by described RC and being applied in the drain electrode of metal-oxide-semiconductor Q1, present embodiment also further is in series with a diode VD6 between the different name end of described RC absorption circuit and transformer T1 primary coil.The negative electrode of described diode VD6 connects described RC and absorbs circuit, and anode connects the different name end of primary coil.When metal-oxide-semiconductor Q1 when shutdown moment produces inverse electromotive force, diode VD6 conducting is gone up the inverse electromotive force that produces with metal-oxide-semiconductor Q1 and is transferred to RC and absorb circuit and absorb filtering; High-voltage DC power supply by rectification circuit output then can not be applied on the metal-oxide-semiconductor Q1 owing to the reverse cut-off characteristics of diode VD6, thereby has guaranteed the correct flow direction of electric current.
Same, two ends at the switching diode VD15 of described transformer T1 primary side also can absorb circuit by further RC in parallel, specifically can be composed in series by resistance R 16 and capacitor C 9, as shown in Figure 1, to play the spike of eliminating in the circuit, make electric current change mild effect.
The Zero consumption standby circuit that present embodiment proposed is applicable in the kitchen appliance equipment such as computer, washing machine, electronic micro-wave oven that touch touch-switch KN1 with have gentle hands, electric equipment can start operation.After program running finishes, complete machine automatic disconnection AC power, consumed power has fully no longer been realized the purpose of real 0W standby thus.But the stand-by circuit that present embodiment proposed also is not suitable for products such as the TV that needs remote-controlled start-up, air-conditioning.
Certainly; the above only is a kind of preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (10)

1. Zero consumption standby circuit, comprise the power supply major loop, in described power supply major loop, include ac power supply terminal, rectification circuit and the DC power supply of rectification circuit output is carried out the transformer of decompression transformation, and the power management chip that is used for the control transformer switching frequency, by the required working power of described transformer output governor circuit; It is characterized in that: also be in series with A.C. contactor in the AC power transmission line of described ac power supply terminal and rectification circuit AC side, described A.C. contactor is break-make under the control action of the switching signal of governor circuit output; Described ac power supply terminal connects start simultaneously and use rectifier bridge, and the DC side of described rectifier bridge connects the high voltage supply end of described power management chip on the one hand by the release-push of delaying time, and connects the primary coil of described transformer on the other hand.
2. Zero consumption standby circuit according to claim 1, it is characterized in that: at the elementary ancillary coil that also is provided with of described transformer, connect storage capacitor, the output DC source is the storage capacitor charging, and the positive pole of described storage capacitor connects the low-tension supply end of described power management chip simultaneously.
3. Zero consumption standby circuit according to claim 2 is characterized in that: also be connected with the diode that is used to prevent current reversal between the positive pole of described ancillary coil and storage capacitor.
4. Zero consumption standby circuit according to claim 1, it is characterized in that: the normally opened contact of described A.C. contactor is connected in the AC power transmission line of described rectification circuit AC side, connect the switch ways of a switch element in the current supply circuit of ac contactor coil, the control end of described switch element receives the switching signal of governor circuit output.
5. Zero consumption standby circuit according to claim 1 is characterized in that: the touch-switch of described time-delay release-push for discharging automatically after the closed back time-delay 100mS.
6. Zero consumption standby circuit according to claim 1, it is characterized in that: in described power supply major loop, also include electrochemical capacitor and switching diode, described electrochemical capacitor is connected in parallel on the DC side of rectification circuit, the positive pole of electrochemical capacitor connects the anode of switching diode, and the negative electrode of switching diode connects the primary coil of transformer.
7. according to each described Zero consumption standby circuit in the claim 1 to 6, it is characterized in that: the low-voltage dc power supply of the secondary coil output by described transformer transfers to the negative electrode of a three-terminal voltage-stabilizing pipe on the one hand through the emission side of an optocoupler, the plus earth of described three-terminal voltage-stabilizing pipe, by after the bleeder circuit dividing potential drop, transfer to the reference utmost point of described three-terminal voltage-stabilizing pipe on the other hand; The sensitive side of described optocoupler is connected between the feedback end and ground of power management chip.
8. Zero consumption standby circuit according to claim 7, it is characterized in that: on described three-terminal voltage-stabilizing pipe, also be connected with RC and absorb circuit, wherein, RC absorbs between the dividing potential drop node that resistance in the circuit is connected the reference utmost point of three-terminal voltage-stabilizing pipe and bleeder circuit, and electric capacity is connected in parallel on the negative electrode of three-terminal voltage-stabilizing pipe and with reference between the utmost point.
9. Zero consumption standby circuit according to claim 7 is characterized in that: be parallel with RC at the two ends of described transformer and absorb circuit; The low-voltage dc power supply of exporting by the secondary coil induction of described transformer exports governor circuit to through switching diode and filter circuit, also is parallel with one group of RC at the two ends of described switching diode and absorbs circuit.
10. electric equipment is characterized in that: comprise governor circuit and as the described Zero consumption standby circuit of each claim in the claim 1 to 9.
CN2011200177658U 2011-01-15 2011-01-15 Zero power consumption standby circuit and electrical appliance equipment comprising the same Expired - Lifetime CN201985762U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998987A (en) * 2012-08-20 2013-03-27 昆山万维通建筑系统科技有限公司 Switching circuit free of standby power consumption
CN103138381A (en) * 2011-11-23 2013-06-05 旭丽电子(广州)有限公司 Alternating current and direct current power supply conversion device capable of improving standby electric power efficiency
CN103701324A (en) * 2013-12-12 2014-04-02 深圳市英威腾交通技术有限公司 Emergency starting power supply circuit
CN103956917A (en) * 2014-05-19 2014-07-30 深圳市新芯矽创电子科技有限公司 Switch power supply circuit
CN104653504A (en) * 2015-03-12 2015-05-27 广东美的环境电器制造有限公司 Control system of direct-current fan and direct-current fan
CN106896859A (en) * 2017-04-06 2017-06-27 六安市同心畅能电子科技有限公司 A kind of automatic washing machine Zero consumption standby circuit
CN111049384A (en) * 2019-12-31 2020-04-21 上海晶丰明源半导体股份有限公司 Low-power-consumption power conversion circuit for control panel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103138381A (en) * 2011-11-23 2013-06-05 旭丽电子(广州)有限公司 Alternating current and direct current power supply conversion device capable of improving standby electric power efficiency
CN102998987A (en) * 2012-08-20 2013-03-27 昆山万维通建筑系统科技有限公司 Switching circuit free of standby power consumption
CN103701324A (en) * 2013-12-12 2014-04-02 深圳市英威腾交通技术有限公司 Emergency starting power supply circuit
CN103701324B (en) * 2013-12-12 2017-08-29 深圳市英威腾交通技术有限公司 A kind of emergency start power circuit
CN103956917A (en) * 2014-05-19 2014-07-30 深圳市新芯矽创电子科技有限公司 Switch power supply circuit
CN104653504A (en) * 2015-03-12 2015-05-27 广东美的环境电器制造有限公司 Control system of direct-current fan and direct-current fan
CN104653504B (en) * 2015-03-12 2017-01-18 广东美的环境电器制造有限公司 Control system of direct-current fan and direct-current fan
CN106896859A (en) * 2017-04-06 2017-06-27 六安市同心畅能电子科技有限公司 A kind of automatic washing machine Zero consumption standby circuit
CN111049384A (en) * 2019-12-31 2020-04-21 上海晶丰明源半导体股份有限公司 Low-power-consumption power conversion circuit for control panel

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