CN104218828A - Power supply automatic switch circuit - Google Patents
Power supply automatic switch circuit Download PDFInfo
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- CN104218828A CN104218828A CN201410465670.0A CN201410465670A CN104218828A CN 104218828 A CN104218828 A CN 104218828A CN 201410465670 A CN201410465670 A CN 201410465670A CN 104218828 A CN104218828 A CN 104218828A
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Abstract
The invention discloses a power supply automatic switch circuit. The power supply automatic switch circuit is characterized by being composed of a key S1, a transformer T1, a rectification filter circuit (1) connected with the secondary side of the transformer T1, an amplifying circuit (2) connected with the output end of the rectification filter circuit (1), a time delay circuit (3) connected with the output end of the amplifying circuit (2), a three-end voltage stabilizing integrated circuit (4) connected with the output end of the time delay circuit (3) and a load detection circuit (5) connected with the output end of the three-end voltage stabilizing integrated circuit (4). The key S1 is in series connection with a loop of a primary side inductance coil L1 of the transformer T1. The power supply automatic switch circuit can automatically switch off a power supply, and accordingly the problem of electric energy waste and potential safety hazards caused when people forget to switch off the power supply is solved.
Description
Technical field
The present invention relates to a kind of circuit, specifically refer to a kind of power automatic switch circuit
Background technology
Electric energy is the one energy easily, and its extensive use defines the second technical revolution in mankind's modern history.Effectively promote the development of human society, created great riches to the mankind, improve the life of the mankind.In production and life, people be unable to do without electricity at present.
Along with the continuous progress of society and the development of science and technology, people are more and more concerned about so low-carbon environment-friendly, becomes megatrend by the earth that we depend on for existence already.Meanwhile, along with the raising of people's living standard, the continuous increase of household electrical appliance, with in electric process, the person caused due to the carelessness of people gets an electric shock and fire incident, causes very large threat to the life of the people and property.So saves energy and safety utilization of electric power is people make great efforts always carry out.But we have a lot of place can saves energy realize safety utilization of electric power in life.Such as, After Hours forget and turn off mains switch, thus cause waste of energy, also can bring unsafe factor simultaneously.How to avoid forgetting turn off power supply and the problem brought to be people be badly in need of solving
Summary of the invention
The object of the invention is to overcome and to forget after people leave office and turn off mains switch, thus cause waste of energy, also bring simultaneously the defect of unsafe factor provide a kind of can the power automatic switch circuit of powered-down automatically.
Object of the present invention is achieved through the following technical solutions: a kind of power automatic switch circuit, by button S1, transformer T1, the current rectifying and wave filtering circuit be connected with transformer T1 secondary, the amplifying circuit be connected with rectification filter circuit output end, the delay circuit be connected with amplification circuit output end, the circuit of three-terminal voltage-stabilizing integrated be connected with delay circuit output, and the load detecting circuit be connected with circuit of three-terminal voltage-stabilizing integrated output forms.Described button S1 is then serially connected on the loop of former limit inductance coil L1 of transformer T1.
Described current rectifying and wave filtering circuit comprises diode bridge rectifier U, and electric capacity C1.Two inputs of diode bridge rectifier U are connected with the two ends of transformer T1 secondary inductance coil L2, and two output is then connected with positive and negative the two poles of the earth of electric capacity C1.The output of described amplifying circuit is then connected with the positive and negative electrode of this electric capacity C1.
Described amplifying circuit is by amplifier P, triode VT1, the resistance R1 that one end is connected with the positive pole of amplifier P, the other end is connected with the collector electrode of triode VT1 with the positive pole of electric capacity C1 simultaneously, the resistance R2 that one end is connected with the negative pole of amplifier P, the other end is connected with the negative pole of electric capacity C1, and the resistance R3 that one end is connected with the output of amplifier P, the other end is connected with the base stage of triode VT1 forms.The collector and emitter of described triode VT1 is then all connected with delay circuit.
Described delay circuit is by triode VT2, diode D1, the resistance R4 that one end is connected with the base stage of triode VT2, the other end is connected with circuit of three-terminal voltage-stabilizing integrated with the N pole of diode D1 after electric capacity C2 simultaneously, the resistance R5 that one end is connected with the emitter of triode VT2, the other end is connected with circuit of three-terminal voltage-stabilizing integrated, and form with the relay K that diode D1 is in parallel.The emitter of described triode VT2 is also connected with the emitter of triode VT1, and its collector electrode is connected with the P pole of diode D1; The N pole of diode D1 is also connected with the collector electrode of triode VT1, and resistance R4 is connected with load detecting circuit with the tie point of electric capacity C2, and the normally opened contact K-1 of relay K is then in parallel with button S1.
Described circuit of three-terminal voltage-stabilizing integrated comprises three terminal regulator U1, resistance R6, electric capacity C3, potentiometer R7.One end of resistance R6 is connected with the N pole of diode D1 with the IN pin of three terminal regulator U1 simultaneously, the other end is connected with load detecting circuit with the OUT pin of three terminal regulator U1 after electric capacity C3 simultaneously, resistance R6 is connected with the GND pin of three terminal regulator U1 with the tie point of electric capacity C3, ground connection while one end of potentiometer R7 is connected with the GND pin of three terminal regulator U1, the other end is connected with resistance R5.
Described load detecting circuit comprises diode D2, diode D3, triode VT3, resistance R8.Diode D2 and diode D3 is in series, and the emitter of triode VT3 is connected with the P pole of diode D2 with the OUT pin of three terminal regulator U1 simultaneously, its collector electrode is connected with the tie point of electric capacity C2 with resistance R4, its base stage is connected with the N pole of diode D3 after resistance R8.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) overall structure of the present invention is comparatively simple, manufactures cost lower, simultaneously convenient operation.
(2) the present invention can realize auto-breaking when useless electric loading, saves energy compared with traditional circuit.
(3) the present invention can realize auto-breaking when useless electric loading, can avoid the generation of Electrical Safety accident, protection people life property safety.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, power automatic switch circuit of the present invention, by button S1, for changing the transformer T1 of voltage, the current rectifying and wave filtering circuit 1 be connected with transformer T1 secondary, the amplifying circuit 2 be connected with current rectifying and wave filtering circuit 1 output, the delay circuit 3 be connected with amplifying circuit 2 output, the circuit of three-terminal voltage-stabilizing integrated 4 be connected with delay circuit 3 output, and the load detecting circuit 5 be connected with circuit of three-terminal voltage-stabilizing integrated 4 output forms.The non-same polarity of described transformer T1 former limit inductance coil L1 after button S1 as the Same Name of Ends of an input of circuit, inductance coil L1 then as another input of circuit.When push button S1 time whole circuit can conducting.
Further, in order to obtain smooth-going direct current, described current rectifying and wave filtering circuit 1 comprises for civil power being become galvanic diode bridge rectifier U, and electric capacity C1.Two inputs of diode bridge rectifier U are connected with the two ends of transformer T1 secondary inductance coil L2, two output is then connected with positive and negative the two poles of the earth of electric capacity C1.The output of described amplifying circuit is then connected with the positive and negative electrode of this electric capacity C1.
Described amplifying circuit 2 is by amplifier P, and triode VT1, resistance R1, resistance R2, resistance R3 formed.One end of resistance R1 is connected with the positive pole of amplifier P, the other end is connected with the collector electrode of triode VT1 with the positive pole of electric capacity C1 simultaneously.One end of resistance R2 is connected with the negative pole of amplifier P, the other end is connected with the negative pole of electric capacity C1, and one end of resistance R3 is connected with the output of amplifier P, the other end is connected with the base stage of triode VT1.The collector and emitter of described triode VT1 is then all connected with delay circuit.
Described delay circuit 3 by triode VT2, diode D1, relay K, resistance R4, resistance R5, and electric capacity C2 forms.One end of resistance R4 is connected with the base stage of triode VT2, the other end is connected with circuit of three-terminal voltage-stabilizing integrated 4 with the N pole of diode D1 after electric capacity C2 simultaneously.One end of resistance R5 is connected with the emitter of triode VT2, the other end is connected with circuit of three-terminal voltage-stabilizing integrated 4.Relay K and diode D1 are in parallel.The emitter of described triode VT2 is also connected with the emitter of triode VT1, its collector electrode is connected with the P pole of diode D1, the N pole of diode D1 is also connected with the collector electrode of triode VT1, resistance R4 is connected with load detecting circuit 5 with the tie point of electric capacity C2, and normally opened contact K-1 and the button S1 of described relay K are in parallel.When relay K works, its normally opened contact K-1 is closed can turning circuit.During circuit turn-on, electric capacity C2 charges, and circuit disconnects and generating electricity into electric capacity C2, thus realizes delay function.
Described circuit of three-terminal voltage-stabilizing integrated 4 comprises three terminal regulator U1, resistance R6, electric capacity C3, potentiometer R7.One end of resistance R6 is connected with the N pole of diode D1 with the IN pin of three terminal regulator U1 simultaneously, the other end is connected with load detecting circuit 5 with the OUT pin of three terminal regulator U1 after electric capacity C3 simultaneously, resistance R6 is connected with the GND pin of three terminal regulator U1 with the tie point of electric capacity C3, ground connection while one end of potentiometer R7 is connected with the GND pin of three terminal regulator U1, the other end is connected with resistance R5, the tie point of potentiometer R7 and resistance R5 is as an output of circuit.The output voltage of circuit can be changed as regulator potentiometer R7.
Described load detecting circuit 5 comprises diode D2, diode D3, triode VT3, resistance R8.Diode D2 and diode D3 is in series, and the emitter of triode VT3 is connected with the P pole of diode D2 with the OUT pin of three terminal regulator U1 simultaneously, its collector electrode is connected with the tie point of electric capacity C2 with resistance R4, its base stage is connected with the N pole of diode D3 after resistance R8.The N pole of described diode D3 is as another output of circuit.
Computer etc. can be used when people are on duty to use electric loading, and when load normally works, there is step-down in diode D2, D3, make VT2, VT3 conducting, relay K its normally opened contact of starting working closes, thus ensures electric power loop normal power supply, and electric capacity C2 starts charging simultaneously.When next, when people but forget computer etc. power remove with electric loading closedown, owing to not having electricity consumption loaded work piece, triode VT3 power-off, due to the discharge process of electric capacity C2, triode VT2 can continue to keep conducting state.VT2 power-off after one section of time delay, normally opened contact K-1 disconnects, and realizing circuit turns off voluntarily, thus can saves energy, eliminate safety and easily suffer from.
As mentioned above, just well the present invention can be implemented.
Claims (6)
1. a power automatic switch circuit, it is characterized in that: by button S1, transformer T1, the current rectifying and wave filtering circuit (1) be connected with transformer T1 secondary, the amplifying circuit (2) be connected with current rectifying and wave filtering circuit (1) output, the delay circuit (3) be connected with amplifying circuit (2) output, the circuit of three-terminal voltage-stabilizing integrated (4) be connected with delay circuit (3) output, and the load detecting circuit (5) be connected with circuit of three-terminal voltage-stabilizing integrated (4) output forms; Described button S1 is then serially connected on the loop of former limit inductance coil L1 of transformer T1.
2. a kind of power automatic switch circuit according to claim 1, is characterized in that: described current rectifying and wave filtering circuit (1) comprises diode bridge rectifier U, and electric capacity C1; Two inputs of diode bridge rectifier U are connected with the two ends of transformer T1 secondary inductance coil L2, and two output is then connected with positive and negative the two poles of the earth of electric capacity C1; The output of described amplifying circuit (2) is then connected with the positive and negative electrode of this electric capacity C1.
3. a kind of power automatic switch circuit according to claim 2, it is characterized in that: described amplifying circuit (2) is by amplifier P, triode VT1, the resistance R1 that one end is connected with the positive pole of amplifier P, the other end is connected with the collector electrode of triode VT1 with the positive pole of electric capacity C1 simultaneously, the resistance R2 that one end is connected with the negative pole of amplifier P, the other end is connected with the negative pole of electric capacity C1, and the resistance R3 that one end is connected with the output of amplifier P, the other end is connected with the base stage of triode VT1 forms; The collector and emitter of described triode VT1 is then all connected with delay circuit (3).
4. a kind of power automatic switch circuit according to claim 3, it is characterized in that: described delay circuit (3) is by triode VT2, diode D1, the resistance R4 that one end is connected with the base stage of triode VT2, the other end is connected with circuit of three-terminal voltage-stabilizing integrated (4) with the N pole of diode D1 after electric capacity C2 simultaneously, the resistance R5 that one end is connected with the emitter of triode VT2, the other end is connected with circuit of three-terminal voltage-stabilizing integrated (4), and form with the relay K that diode D1 is in parallel; The emitter of described triode VT2 is also connected with the emitter of triode VT1, and its collector electrode is connected with the P pole of diode D1; The N pole of diode D1 is also connected with the collector electrode of triode VT1, and resistance R4 is connected with load detecting circuit (5) with the tie point of electric capacity C2, and the normally opened contact K-1 of relay K is then in parallel with button S1.
5. a kind of power automatic switch circuit according to claim 4, is characterized in that: described circuit of three-terminal voltage-stabilizing integrated (4) comprises three terminal regulator U1, resistance R6, electric capacity C3, potentiometer R7; One end of resistance R6 is connected with the N pole of diode D1 with the IN pin of three terminal regulator U1 simultaneously, the other end is connected with load detecting circuit (5) with the OUT pin of three terminal regulator U1 after electric capacity C3 simultaneously, resistance R6 is connected with the GND pin of three terminal regulator U1 with the tie point of electric capacity C3, ground connection while one end of potentiometer R7 is connected with the GND pin of three terminal regulator U1, the other end is connected with resistance R5.
6. a kind of power automatic switch circuit according to claim 5, is characterized in that: described load detecting circuit (5) comprises diode D2, diode D3, triode VT3, resistance R8; Diode D2 and diode D3 is in series, and the emitter of triode VT3 is connected with the P pole of diode D2 with the OUT pin of three terminal regulator U1 simultaneously, its collector electrode is connected with the tie point of electric capacity C2 with resistance R4, its base stage is connected with the N pole of diode D3 after resistance R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465670.0A CN104218828A (en) | 2014-09-12 | 2014-09-12 | Power supply automatic switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465670.0A CN104218828A (en) | 2014-09-12 | 2014-09-12 | Power supply automatic switch circuit |
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| Publication Number | Publication Date |
|---|---|
| CN104218828A true CN104218828A (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410465670.0A Pending CN104218828A (en) | 2014-09-12 | 2014-09-12 | Power supply automatic switch circuit |
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| Country | Link |
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| CN (1) | CN104218828A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592102A (en) * | 2017-09-12 | 2018-01-16 | 安徽康力节能电器科技有限公司 | A kind of automatically cutting off power source circuit |
| CN107611925A (en) * | 2017-09-15 | 2018-01-19 | 安徽康力节能电器科技有限公司 | A kind of power saving power circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076282U (en) * | 1990-10-25 | 1991-05-01 | 侯旭斌 | Automatic electronic switch |
| CN203205894U (en) * | 2012-11-19 | 2013-09-18 | 安徽同舟电子科技有限公司 | 9V rechargeable battery |
| CN103471727A (en) * | 2013-09-16 | 2013-12-25 | 成都赛腾自动化工程有限公司 | Large-scale rotating machine bearing temperature alarming and monitoring device |
| CN103762970A (en) * | 2014-01-25 | 2014-04-30 | 济南诺辉节能技术开发有限公司 | High precision voltage and current isolation conversion module |
-
2014
- 2014-09-12 CN CN201410465670.0A patent/CN104218828A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076282U (en) * | 1990-10-25 | 1991-05-01 | 侯旭斌 | Automatic electronic switch |
| CN203205894U (en) * | 2012-11-19 | 2013-09-18 | 安徽同舟电子科技有限公司 | 9V rechargeable battery |
| CN103471727A (en) * | 2013-09-16 | 2013-12-25 | 成都赛腾自动化工程有限公司 | Large-scale rotating machine bearing temperature alarming and monitoring device |
| CN103762970A (en) * | 2014-01-25 | 2014-04-30 | 济南诺辉节能技术开发有限公司 | High precision voltage and current isolation conversion module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592102A (en) * | 2017-09-12 | 2018-01-16 | 安徽康力节能电器科技有限公司 | A kind of automatically cutting off power source circuit |
| CN107611925A (en) * | 2017-09-15 | 2018-01-19 | 安徽康力节能电器科技有限公司 | A kind of power saving power circuit |
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Application publication date: 20141217 |