CN103414360B - Combination switch power supply - Google Patents
Combination switch power supply Download PDFInfo
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- CN103414360B CN103414360B CN201310329314.1A CN201310329314A CN103414360B CN 103414360 B CN103414360 B CN 103414360B CN 201310329314 A CN201310329314 A CN 201310329314A CN 103414360 B CN103414360 B CN 103414360B
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- 238000004804 winding Methods 0.000 claims description 30
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
A kind of combination switch power supply, comprising: first input end, the second input, the first power-switching circuit, second source change-over circuit, switching circuit, alternating current switching circuit, power output end, control signal input.First input end is connected with the second input by the first power-switching circuit, and the first power-switching circuit is connected with power output end by second source change-over circuit.Switching circuit is connected with the second input by second source change-over circuit, and first input end is connected with alternating current switching circuit by switching circuit; First input end passes through switching circuit and is connected with power output end through second source change-over circuit; First power-switching circuit is connected with power output end and control signal input.Above-mentioned combination switch power supply provides two kinds of power-switching circuits, and the power supply utilizing switching circuit to carry out between two kinds of power supplys is changed, and meets the electric power supply under electronic product different operating state, reduces unnecessary electric energy loss.
Description
Technical field
The present invention relates to a kind of power supply, particularly relate to a kind of combination switch power supply.
Background technology
Global civil power has different standards, and as China is generally 220V, the U.S. and Japan all use the alternating current of 110V.Civil power i.e. our said industrial-frequency alternating current, often uses three amounts: voltage, electric current, frequency, characterize the characteristic of alternating current.Usually in an electronic equipment, summarize the circuit module of multiple not same-actions, and they individually work sometimes, operating voltage needed for electronic devices and components, electric current are different, the voltage being supplied to each functional module also has polytype, power supply changeover device can realize the conversion of multiple voltage type, so it is widely used in household electrical appliances, PDA, measurement and control area.
Nowadays, conveniently use and promote the needs of energy-saving and emission-reduction, numerous electronic product has different operating states.As photocopier is then in holding state when not working, at this moment required supply of electric power and the energy of consumption will far below energy consumptions during normal work.
But the mode of traditional single fixed power source is under electronic product resting state, unnecessary power consumption is comparatively large, causes energy waste.
Summary of the invention
Based on this, be necessary to provide a kind of combination switch power supply reducing energy waste.
A kind of combination switch power supply, comprising: first input end, the second input, the first power-switching circuit, second source change-over circuit, alternating current switching circuit, power output end, control signal input, switching circuit;
Described first power-switching circuit comprises: rectifying full bridge D2, resistance R1 and R2, triode Q1, electric capacity C2, transformer T, and wherein transformer T comprises armature winding L1, secondary winding L3, auxiliary winding L 2;
Secondary winding L3 one end ground connection, the other end connects second source change-over circuit 104, rectifying full bridge D2 direct current positive output end is connected with the base stage of triode Q1 by resistance R1, also be connected with the collector electrode of triode Q1 by armature winding L1, the base stage of triode Q1 is connected with one end of auxiliary winding L 2 by electric capacity C2, the other end of auxiliary winding L 2 is connected with the emitter of triode Q1 by resistance R2, also be connected with the direct current negative output terminal of rectifying full bridge D2, one of them ac input end of rectifying full bridge D2 is connected with described first input end, another ac input end is connected with described second input,
Described second source change-over circuit comprises: rectifying full bridge D1, diode D3 and electric capacity C1;
Rectifying full bridge D1 direct current positive output end is connected with the negative pole of diode D3, one end of electric capacity C1 and power output end, the other end ground connection of electric capacity C1.The direct current negative output terminal ground connection of rectifying full bridge D1, two ac input end connects described alternating current switching circuit and described second input respectively, and the positive pole of diode D3 is connected with the secondary winding L3 of transformer T;
Described alternating current switching circuit comprises: relay R L1 and triode Q3;
The grounded emitter of triode Q3, the base stage of triode Q3 is connected with described control signal input, two inputs of relay R L1 are connected with the collector electrode of triode Q3 and described power output end respectively, a contact in two contacts of relay R L1 is connected with the ac input end of rectifying full bridge D1, and another contact is connected with the ac input end of described first input end and rectifying full bridge D2 simultaneously.
In one of them embodiment, described alternating current switching circuit also comprises diode D5, and the positive pole of diode D5 is connected with the collector electrode of triode Q3, and negative pole is connected with described power output end.
In one of them embodiment, described combination switch power supply also comprises bidirectional triode thyristor Q2, voltage stabilizing didoe ZD1 and ZD2, the control end of bidirectional triode thyristor Q2 is connected with the positive pole of voltage-stabiliser tube ZD1 by the negative pole of voltage-stabiliser tube ZD2, the negative pole of voltage-stabiliser tube ZD1 is connected with the second input, and the other two ends of bidirectional triode thyristor Q2 are connected with the ac input end of described second input and rectifying full bridge D1 respectively.
Above-mentioned combination switch power supply provides two kinds of power-switching circuits, and the power supply utilizing alternating current switching circuit to carry out between two kinds of power supplys is changed, and meets the electric power supply under electronic product different operating state, reduces unnecessary electric energy loss.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the combination switch power supply of a preferred embodiment of the present invention.
Embodiment
As shown in Figure 1, it is the circuit diagram of the combination switch power supply 10 of a preferred embodiment of the present invention, comprising: first input end 101, second input 102, first power-switching circuit 103, second source change-over circuit 104, switching circuit 105, alternating current switching circuit 106 and power output end 107, control signal input 108.
First power-switching circuit 103 comprises: rectifying full bridge D2, resistance R1 and R2, triode Q1, electric capacity C2, transformer T.Wherein transformer T comprises armature winding L1, secondary winding L3 and auxiliary winding L 2.
Secondary winding L3 one end ground connection, the other end connects second source change-over circuit 104.Rectifying full bridge D2 direct current positive output end is connected with the base stage of triode Q1 by resistance R1, is also connected with the collector electrode of triode Q1 by armature winding L1.The base stage of triode Q1 is connected with one end of auxiliary winding L 2 by electric capacity C2, and the other end of auxiliary winding L 2 is connected with the emitter of triode Q1 by resistance R2, is also connected with the direct current negative output terminal connecting rectifying full bridge D2.One of them ac input end of rectifying full bridge D2 is connected with first input end 101, and another ac input end is connected with the second input 102.
Second source change-over circuit 104 comprises: rectifying full bridge D1, diode D3 and electric capacity C1.
Rectifying full bridge D1 direct current positive output end is connected with the negative pole of diode D3, one end of electric capacity C1 and power output end 107.The other end ground connection of electric capacity C1.The direct current negative output terminal ground connection of rectifying full bridge D1, two ac input end connects alternating current switching circuit 106 and the second input 102 respectively.The positive pole of diode D3 is connected with the secondary winding L3 of transformer T.
Alternating current switching circuit 106 comprises: bidirectional triode thyristor Q2, voltage stabilizing didoe ZD1 and ZD2.
The control end of bidirectional triode thyristor Q2 is connected with the positive pole of voltage-stabiliser tube ZD1 by the negative pole of voltage-stabiliser tube ZD2, and the negative pole of voltage-stabiliser tube ZD1 is connected with the second input 102.The other two ends of bidirectional triode thyristor Q2 are connected with switching circuit 105 with the second input 102 respectively.
Switching circuit 105 comprises: relay R L1, diode D5, triode Q3.
The collector electrode of triode Q3 is connected with power output end 107 by the positive pole of diode D5, the grounded emitter of triode Q3, and the base stage of triode Q3 is connected with control signal input 108.Two inputs of relay R L1 are in parallel with diode D5.One of them contact of two contacts of relay R L1 is connected with the ac output end of rectifying full bridge D1, and another contact is connected with the ac input end of first input end 101 and rectifying full bridge D2 simultaneously.
Control signal input 108 Received signal strength; control the break-make as on-off action triode Q3; thus the open and close of control relay RL1 contact; diode D5 is connected in parallel on relay R L1 two ends; form loop checking installation; thus the self-excited pulse voltage breakdown triode Q3 preventing relay R L1 coil from producing, protective circuit safety.
After load is connected with power output end 107, the operation principle of above-mentioned combination switch power supply 10 is as follows:
Initial condition, the moving contact of relay R L1 and fixed contact disconnect.
After first input end 101 is connected external power source with the second input 102, alternating current, after the full-wave rectification of rectifying full bridge D2, provides a suitable positive bias by resistance R1 to the base stage of triode Q1, makes triode Q1 conducting.The collector current of triode Q1 is by primary coil L1, negative lower positive induced voltage on its two ends produce, this induced voltage is coupled in auxiliary winding L 2 by transformer T, L2 is made to induce negative lower positive induced voltage, this induced voltage acts on the emitter of triode Q1 by resistance R2, its ducting capacity is strengthened further, the collector current of triode Q1 is constantly increased.By this positive feedback process, triode Q1 enters saturation condition.The induced voltage of auxiliary winding L 2 is while providing positive feedback to triode Q1, and also charge to electric capacity C2, along with increasing of electric capacity C2 charging voltage, triode Q1 base potential step-down gradually, causes Q1 to exit saturation region.Collector current reduces gradually, from Lenz's law, in auxiliary winding L 2, induction triode Q1 base stage of sening as an envoy to is bear, launch very positive voltage, triode Q1 is ended rapidly, energy storage in primary coil L1 is by being coupled to secondary coil L3, induced voltage in L3 is after the halfwave rectifier of diode D3, and the filter action through electric capacity C1 provides level and smooth d. c. voltage signal to power output end 107.
When triode Q1 ends, in auxiliary winding L 2, there is no induced voltage, direct current supply input voltage again through resistance R1 to electric capacity C2 reverse charging, improve auxiliary winding base potential gradually, make its conducting again, again overturn the state that reaches capacity, circuit repeats vibration like this and goes down.
Secondary winding L3 produces induced voltage, diode D3 when continuous ON-OFF, electric capacity C1 according to the constantly discharge and recharge of its state for power output end 107 provides energy.
When load needs Switching power, input a control signal at control signal input 108, make the effect of the contact suspension control signal input 108 of relay R L1 and conducting.
Due to the existence of transformer T in the first power-switching circuit 103, make its input impedance very large, make the electric current flowed out from first input end 101 only flow to alternating current switching circuit 106 and second source change-over circuit 104 through relay R L1 to the inhibition of electric current.Flow to the full-wave rectification of electric current through rectifying full bridge D1 of second source change-over circuit 103, then through the filter action of electric capacity C1, for power output end 107 provides the voltage signal of smooth steady, achieve the switching of power supply.
Alternating current switching circuit 106 is now connected in parallel between first input end 101 and the second input 102, in alternating current, voltage rises gradually from 0V, when voltage when between the input and control end of bidirectional triode thyristor Q2 is lower than the puncture voltage having voltage-stabiliser tube ZD1 and ZD2 oppositely to connection circuit, can trigger current once reach gate pole, bidirectional triode thyristor Q2 is triggered conducting, now the voltage of two inputs of bidirectional triode thyristor Q2 is on state voltage from the voltage drop that will trigger when puncturing, until when this upper half is less than maintenance electric current by silicon controlled electric current, bidirectional triode thyristor turns off at once.The scope of adjustment magnitude of voltage can select different voltage-stabiliser tube ZD1 and ZD2 as required.
Above-mentioned combination switch power supply 10 provides two kinds of power-switching circuits, and the power supply utilizing switching circuit to carry out between two kinds of power supplys is changed, and meets the electric power supply under electronic product different operating state, reduces unnecessary electric energy loss.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should with claims.
Claims (3)
1. a combination switch power supply, is characterized in that, comprising: first input end, the second input, the first power-switching circuit, second source change-over circuit, alternating current switching circuit, power output end, control signal input,
Described first power-switching circuit comprises: rectifying full bridge D2, resistance R1 and R2, triode Q1, electric capacity C2, transformer T, and wherein transformer T comprises armature winding L1, secondary winding L3, auxiliary winding L 2,
Secondary winding L3 one end ground connection, the other end connects described second source change-over circuit, described rectifying full bridge D2 direct current positive output end is connected with the base stage of described triode Q1 by described resistance R1, also be connected with the collector electrode of described triode Q1 by described armature winding L1, the base stage of described triode Q1 is connected with one end of described auxiliary winding L 2 by described electric capacity C2, the other end of described auxiliary winding L 2 is connected with the emitter of described triode Q1 by described resistance R2, also be connected with the direct current negative output terminal of described rectifying full bridge D2, one of them ac input end of described rectifying full bridge D2 is connected with described first input end, another ac input end is connected with described second input,
Described second source change-over circuit comprises: rectifying full bridge D1, diode D3 and electric capacity C1,
Described rectifying full bridge D1 direct current positive output end is connected with the negative pole of described diode D3, one end of described electric capacity C1 and described power output end, the other end ground connection of described electric capacity C1, the direct current negative output terminal ground connection of described rectifying full bridge D1, two ac input ends of described rectifying full bridge D1 connect described alternating current switching circuit and described second input respectively, the positive pole of described diode D3 is connected with the secondary winding L3 of described transformer T
Described alternating current switching circuit comprises: relay R L1 and triode Q3,
The grounded emitter of described triode Q3, the base stage of described triode Q3 is connected with described control signal input, two inputs of described relay R L1 are connected with the collector electrode of described triode Q3 and described power output end respectively, a contact in two contacts of described relay R L1 is connected with the ac input end of described rectifying full bridge D1, and another contact is connected with the ac input end of described first input end and rectifying full bridge D2 simultaneously.
2. combination switch power supply according to claim 1, is characterized in that, described switching circuit also comprises diode D5, and the positive pole of described diode D5 is connected with the collector electrode of described triode Q3, and negative pole is connected with described power output end.
3. combination switch power supply according to claim 1, it is characterized in that, described combination switch power supply also comprises bidirectional triode thyristor Q2, voltage stabilizing didoe ZD1 and ZD2, the control end of described bidirectional triode thyristor Q2 is connected with the positive pole of described voltage-stabiliser tube ZD1 by the negative pole of described voltage-stabiliser tube ZD2, the negative pole of described voltage-stabiliser tube ZD1 is connected with described second input, and the other two ends of described bidirectional triode thyristor Q2 are connected with the ac input end of described second input and described rectifying full bridge D1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310329314.1A CN103414360B (en) | 2013-07-31 | 2013-07-31 | Combination switch power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310329314.1A CN103414360B (en) | 2013-07-31 | 2013-07-31 | Combination switch power supply |
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| Publication Number | Publication Date |
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| CN103414360A CN103414360A (en) | 2013-11-27 |
| CN103414360B true CN103414360B (en) | 2015-10-28 |
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| CN201310329314.1A Expired - Fee Related CN103414360B (en) | 2013-07-31 | 2013-07-31 | Combination switch power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1494190A (en) * | 2002-08-01 | 2004-05-05 | 株式会社I-Hits研究所 | Dispersed power supply system |
| CN1738175A (en) * | 2005-08-21 | 2006-02-22 | 米万里 | Ultramicro power consumption stand by switch circuit |
| CN101437342A (en) * | 2008-12-24 | 2009-05-20 | 米万里 | Low energy consumption monopole electronic switching circuit and micro energy consumption brightening circuit of indicating lamp |
| CN201422010Y (en) * | 2009-03-13 | 2010-03-10 | 朱大利 | Power consumption protector with overvoltage under-voltage protection and time-delay function |
| CN203406793U (en) * | 2013-07-31 | 2014-01-22 | 邱志锋 | Composite switch power supply |
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2013
- 2013-07-31 CN CN201310329314.1A patent/CN103414360B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1494190A (en) * | 2002-08-01 | 2004-05-05 | 株式会社I-Hits研究所 | Dispersed power supply system |
| CN1738175A (en) * | 2005-08-21 | 2006-02-22 | 米万里 | Ultramicro power consumption stand by switch circuit |
| CN101437342A (en) * | 2008-12-24 | 2009-05-20 | 米万里 | Low energy consumption monopole electronic switching circuit and micro energy consumption brightening circuit of indicating lamp |
| CN201422010Y (en) * | 2009-03-13 | 2010-03-10 | 朱大利 | Power consumption protector with overvoltage under-voltage protection and time-delay function |
| CN203406793U (en) * | 2013-07-31 | 2014-01-22 | 邱志锋 | Composite switch power supply |
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| Publication number | Publication date |
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| CN103414360A (en) | 2013-11-27 |
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Granted publication date: 20151028 Termination date: 20200731 |