CN204316078U - A kind of power automatic switch circuit with over-voltage over-current protection - Google Patents
A kind of power automatic switch circuit with over-voltage over-current protection Download PDFInfo
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- CN204316078U CN204316078U CN201420721463.2U CN201420721463U CN204316078U CN 204316078 U CN204316078 U CN 204316078U CN 201420721463 U CN201420721463 U CN 201420721463U CN 204316078 U CN204316078 U CN 204316078U
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Abstract
The utility model discloses a kind of power automatic switch circuit with over-voltage over-current protection, primarily of transformer T1, be arranged on the button S1 on the non-same polarity of transformer T1 former limit, the current rectifying and wave filtering circuit be connected with transformer T1 secondary, delay circuit, the voltage stabilizing circuit be connected with delay circuit output, and the load detecting circuit be connected with circuit output end of pressure-stabilizing forms, and it is characterized in that: between current rectifying and wave filtering circuit and delay circuit, be also provided with over-voltage over-current protection circuit; Described over-voltage over-current protection circuit is by protect IC U2; triode VT1; triode VT2; triode VT3; the electric capacity C2 that CONT pin is connected, negative pole is connected with current rectifying and wave filtering circuit of positive pole and protect IC U2; the compositions such as the diode D1 that N pole is connected with the VCC pin of protect IC U2, P pole is connected with the TRI pin of protect IC U2; over-voltage over-current protection circuit of the present utility model can make protection act automatically when transshipping with the curtage in electric loading, avoids load and power switch circuit itself to be damaged.
Description
Technical field
The utility model relates to a kind of circuit, specifically refers to a kind of power automatic switch circuit with over-voltage over-current protection.
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 makes great efforts to carry out always, therefore power switch circuit has been applied in the middle of people live.But current power switch circuit does not have automatic protection functions, when the voltage of load or electric current too high time can cause damage to by electric loading.
Utility model content
The purpose of this utility model is to overcome the defect that the power switch circuit used at present does not have automatic protection functions, provides a kind of power automatic switch circuit with over-voltage over-current protection.
The purpose of this utility model is achieved through the following technical solutions: a kind of power automatic switch circuit with over-voltage over-current protection, primarily of transformer T1, be arranged on the button S1 on the non-same polarity of transformer T1 former limit, the current rectifying and wave filtering circuit be connected with transformer T1 secondary, delay circuit, the voltage stabilizing circuit be connected with delay circuit output, and the load detecting circuit to be connected with circuit output end of pressure-stabilizing forms, and is also provided with over-voltage over-current protection circuit between current rectifying and wave filtering circuit and delay circuit, described over-voltage over-current protection circuit is by protect IC U2, triode VT1, triode VT2, triode VT3, positive pole is connected with the CONT pin of protect IC U2, the electric capacity C2 that negative pole is connected with current rectifying and wave filtering circuit, N pole is connected with the VCC pin of protect IC U2, the diode D1 that P pole is connected with the TRI pin of protect IC U2, positive pole is connected with the TRI pin of protect IC U2, the electric capacity C3 that negative pole is connected with the negative pole of electric capacity C2, one end is connected with the OUT pin of protect IC U2, the resistance R1 that the other end is connected with the base stage of triode VT3, one end is connected with the N pole of diode D1, the resistance R2 that the other end is connected with the collector electrode of triode VT1, P pole is connected with the base stage of triode VT2, the diode D2 that N pole is connected with the emitter of triode VT1 after resistance R3, and one end is connected with the collector electrode of triode VT3, the resistance R4 that the other end is connected with the N pole of diode D2 forms, the RESET pin of described protect IC U2 is connected with its VCC pin, VCC pin is connected with the emitter of triode VT3, THRE pin is connected with the collector electrode of triode VT1, GND pin ground connection, DIS pin is connected with current rectifying and wave filtering circuit, the base stage of triode VT1 is connected with the positive pole of electric capacity C3, collector electrode is connected with the collector electrode of triode VT2, emitter is connected with the negative pole of electric capacity C3, the emitter of triode VT2 is connected with the N pole of delay circuit and diode D2 simultaneously, the collector electrode of triode VT3 is connected with delay circuit, the N pole of diode D2 is connected with delay circuit.
Further, described current rectifying and wave filtering circuit comprises diode bridge rectifier U1, and electric capacity C1; Two inputs of diode bridge rectifier U1 are connected with non-same polarity with the Same Name of Ends of transformer T1 secondary, and two output is then connected with positive and negative the two poles of the earth of electric capacity C1; Electric capacity C1 positive pole is also connected with the DIS pin of protect IC U2, negative pole is then connected with the negative pole of electric capacity C2.
Described delay circuit is by triode VT4, diode D3, the resistance R5 that one end is connected with the base stage of triode VT4, the other end is connected with voltage stabilizing circuit with the N pole of diode D3 after electric capacity C4 simultaneously, the resistance R6 that one end is connected with the emitter of triode VT4, the other end is connected with voltage stabilizing circuit, and form with the relay K that diode D3 is in parallel; The emitter of described triode VT4 is also connected with the N pole of diode D2, and its collector electrode is connected with the P pole of diode D3; The N pole of diode D3 is also connected with the collector electrode of triode VT3, and resistance R5 is connected with load detecting circuit with the tie point of electric capacity C4, and the normally opened contact K-1 of relay K is then in parallel with button S1.
Described voltage stabilizing circuit comprises three terminal regulator U3, resistance R8, electric capacity C5, potentiometer R7; One end of resistance R8 is connected with the N pole of diode D3 with the IN pin of three terminal regulator U3 simultaneously, the other end is connected with load detecting circuit with the OUT pin of three terminal regulator U3 after electric capacity C5 simultaneously, resistance R8 is connected with the GND pin of three terminal regulator U3 with the tie point of electric capacity C5, ground connection while one end of potentiometer R7 is connected with the GND pin of three terminal regulator U3, the other end is connected with resistance R6.
Described load detecting circuit comprises diode D4, diode D5, triode VT5, resistance R9; Diode D4 and diode D5 is in series, and the emitter of triode VT5 is connected with the P pole of diode D4 with the OUT pin of three terminal regulator U3 simultaneously, its collector electrode is connected with the tie point of electric capacity C4 with resistance R5, its base stage is connected with the N pole of diode D5 after resistance R9.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) over-voltage over-current protection circuit of the present utility model can make protection act automatically when transshipping with the curtage in electric loading, avoids load and power switch circuit itself to be damaged.
(2) the utility model with can realize auto-breaking when useless electric loading, saves energy.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1; the power automatic switch circuit with over-voltage over-current protection of the present utility model; primarily of transformer T1; be arranged on the button S1 on the non-same polarity of transformer T1 former limit; the current rectifying and wave filtering circuit be connected with transformer T1 secondary; delay circuit, the voltage stabilizing circuit be connected with delay circuit output, and the load detecting circuit be connected with circuit output end of pressure-stabilizing forms.In order to make power automatic switch circuit have automatic protection functions, between current rectifying and wave filtering circuit and delay circuit, be also provided with over-voltage over-current protection circuit.
Described over-voltage over-current protection circuit is by protect IC U2, triode VT1, triode VT2, triode VT3, positive pole is connected with the CONT pin of protect IC U2, the electric capacity C2 that negative pole is connected with current rectifying and wave filtering circuit, N pole is connected with the VCC pin of protect IC U2, the diode D1 that P pole is connected with the TRI pin of protect IC U2, positive pole is connected with the TRI pin of protect IC U2, the electric capacity C3 that negative pole is connected with the negative pole of electric capacity C2, one end is connected with the OUT pin of protect IC U2, the resistance R1 that the other end is connected with the base stage of triode VT3, one end is connected with the N pole of diode D1, the resistance R2 that the other end is connected with the collector electrode of triode VT1, P pole is connected with the base stage of triode VT2, the diode D2 that N pole is connected with the emitter of triode VT1 after resistance R3, and one end is connected with the collector electrode of triode VT3, the resistance R4 that the other end is connected with the N pole of diode D2 forms, the RESET pin of described protect IC U2 is connected with its VCC pin, VCC pin is connected with the emitter of triode VT3, THRE pin is connected with the collector electrode of triode VT1, GND pin ground connection, DIS pin is connected with current rectifying and wave filtering circuit, the base stage of triode VT1 is connected with the positive pole of electric capacity C3, collector electrode is connected with the collector electrode of triode VT2, emitter is connected with the negative pole of electric capacity C3, the emitter of triode VT2 is connected with the N pole of delay circuit and diode D2 simultaneously, the collector electrode of triode VT3 is connected with delay circuit, the N pole of diode D2 is connected with delay circuit.Over-voltage over-current protection circuit can in load curtage overload time automatically make protection act, avoid load and circuit itself to be damaged.In order to better implement the utility model, described protect IC U2 is preferably NE555 integrated chip.
In order to obtain smooth-going direct current, described current rectifying and wave filtering circuit comprises for civil power being become galvanic diode bridge rectifier U1, and electric capacity C1; Two inputs of diode bridge rectifier U1 are connected with non-same polarity with the Same Name of Ends of transformer T1 secondary, and two output is then connected with positive and negative the two poles of the earth of electric capacity C1; Electric capacity C1 positive pole is also connected with the DIS pin of protect IC U2, negative pole is then connected with the negative pole of electric capacity C2.
Described delay circuit is by triode VT4, diode D3, the resistance R5 that one end is connected with the base stage of triode VT4, the other end is connected with voltage stabilizing circuit with the N pole of diode D3 after electric capacity C4 simultaneously, the resistance R6 that one end is connected with the emitter of triode VT4, the other end is connected with voltage stabilizing circuit, and form with the relay K that diode D3 is in parallel; The emitter of described triode VT4 is also connected with the N pole of diode D2, and its collector electrode is connected with the P pole of diode D3; The N pole of diode D3 is also connected with the collector electrode of triode VT3, and resistance R5 is connected with load detecting circuit with the tie point of electric capacity C4, and the normally opened contact K-1 of relay K is then in parallel with button S1.
Described voltage stabilizing circuit comprises three terminal regulator U3, resistance R8, electric capacity C5, potentiometer R7; One end of resistance R8 is connected with the N pole of diode D3 with the IN pin of three terminal regulator U3 simultaneously, the other end is connected with load detecting circuit with the OUT pin of three terminal regulator U3 after electric capacity C5 simultaneously, resistance R8 is connected with the GND pin of three terminal regulator U3 with the tie point of electric capacity C5, ground connection while one end of potentiometer R7 is connected with the GND pin of three terminal regulator U3, the other end is connected with resistance R6.
Described load detecting circuit comprises diode D4, diode D5, triode VT5, resistance R9; Diode D4 and diode D5 is in series, and the emitter of triode VT5 is connected with the P pole of diode D4 with the OUT pin of three terminal regulator U3 simultaneously, its collector electrode is connected with the tie point of electric capacity C4 with resistance R5, its base stage is connected with the N pole of diode D5 after resistance R9.
When load occurring overcurrent, triode VT1 conducting, the THRE pin of protect IC and TRI pin are low level, and OUT pin puts sky makes triode VT3 end, down circuitry.Same, when voltage overload in load, diode D2 is breakdown, triode VT2 conducting, and protect IC U2 is in SM set mode, makes triode VT3 end equally, system cut-off.
As mentioned above, just well the utility model can be implemented.
Claims (5)
1. one kind has the power automatic switch circuit of over-voltage over-current protection, primarily of transformer T1, be arranged on the button S1 on the non-same polarity of transformer T1 former limit, the current rectifying and wave filtering circuit be connected with transformer T1 secondary, delay circuit, the voltage stabilizing circuit be connected with delay circuit output, and the load detecting circuit be connected with circuit output end of pressure-stabilizing forms, and it is characterized in that: between current rectifying and wave filtering circuit and delay circuit, be also provided with over-voltage over-current protection circuit, described over-voltage over-current protection circuit is by protect IC U2, triode VT1, triode VT2, triode VT3, positive pole is connected with the CONT pin of protect IC U2, the electric capacity C2 that negative pole is connected with current rectifying and wave filtering circuit, N pole is connected with the VCC pin of protect IC U2, the diode D1 that P pole is connected with the TRI pin of protect IC U2, positive pole is connected with the TRI pin of protect IC U2, the electric capacity C3 that negative pole is connected with the negative pole of electric capacity C2, one end is connected with the OUT pin of protect IC U2, the resistance R1 that the other end is connected with the base stage of triode VT3, one end is connected with the N pole of diode D1, the resistance R2 that the other end is connected with the collector electrode of triode VT1, P pole is connected with the base stage of triode VT2, the diode D2 that N pole is connected with the emitter of triode VT1 after resistance R3, and one end is connected with the collector electrode of triode VT3, the resistance R4 that the other end is connected with the N pole of diode D2 forms, the RESET pin of described protect IC U2 is connected with its VCC pin, VCC pin is connected with the emitter of triode VT3, THRE pin is connected with the collector electrode of triode VT1, GND pin ground connection, DIS pin is connected with current rectifying and wave filtering circuit, the base stage of triode VT1 is connected with the positive pole of electric capacity C3, collector electrode is connected with the collector electrode of triode VT2, emitter is connected with the negative pole of electric capacity C3, the emitter of triode VT2 is connected with the N pole of delay circuit and diode D2 simultaneously, the collector electrode of triode VT3 is connected with delay circuit, the N pole of diode D2 is connected with delay circuit.
2. a kind of power automatic switch circuit with over-voltage over-current protection according to claim 1, is characterized in that: described current rectifying and wave filtering circuit comprises diode bridge rectifier U1, and electric capacity C1; Two inputs of diode bridge rectifier U1 are connected with non-same polarity with the Same Name of Ends of transformer T1 secondary, and two output is then connected with positive and negative the two poles of the earth of electric capacity C1; Electric capacity C1 positive pole is also connected with the DIS pin of protect IC U2, negative pole is then connected with the negative pole of electric capacity C2.
3. a kind of power automatic switch circuit with over-voltage over-current protection according to claim 2, it is characterized in that: described delay circuit is by triode VT4, diode D3, the resistance R5 that one end is connected with the base stage of triode VT4, the other end is connected with voltage stabilizing circuit with the N pole of diode D3 after electric capacity C4 simultaneously, the resistance R6 that one end is connected with the emitter of triode VT4, the other end is connected with voltage stabilizing circuit, and form with the relay K that diode D3 is in parallel; The emitter of described triode VT4 is also connected with the N pole of diode D2, and its collector electrode is connected with the P pole of diode D3; The N pole of diode D3 is also connected with the collector electrode of triode VT3, and resistance R5 is connected with load detecting circuit with the tie point of electric capacity C4, and the normally opened contact K-1 of relay K is then in parallel with button S1.
4. a kind of power automatic switch circuit with over-voltage over-current protection according to claim 3, is characterized in that: described voltage stabilizing circuit comprises three terminal regulator U3, resistance R8, electric capacity C5, potentiometer R7; One end of resistance R8 is connected with the N pole of diode D3 with the IN pin of three terminal regulator U3 simultaneously, the other end is connected with load detecting circuit with the OUT pin of three terminal regulator U3 after electric capacity C5 simultaneously, resistance R8 is connected with the GND pin of three terminal regulator U3 with the tie point of electric capacity C5, ground connection while one end of potentiometer R7 is connected with the GND pin of three terminal regulator U3, the other end is connected with resistance R6.
5. a kind of power automatic switch circuit with over-voltage over-current protection according to claim 4, is characterized in that: described load detecting circuit comprises diode D4, diode D5, triode VT5, resistance R9; Diode D4 and diode D5 is in series, and the emitter of triode VT5 is connected with the P pole of diode D4 with the OUT pin of three terminal regulator U3 simultaneously, its collector electrode is connected with the tie point of electric capacity C4 with resistance R5, its base stage is connected with the N pole of diode D5 after resistance R9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420721463.2U CN204316078U (en) | 2014-11-26 | 2014-11-26 | A kind of power automatic switch circuit with over-voltage over-current protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420721463.2U CN204316078U (en) | 2014-11-26 | 2014-11-26 | A kind of power automatic switch circuit with over-voltage over-current protection |
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| Publication Number | Publication Date |
|---|---|
| CN204316078U true CN204316078U (en) | 2015-05-06 |
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| CN201420721463.2U Expired - Fee Related CN204316078U (en) | 2014-11-26 | 2014-11-26 | A kind of power automatic switch circuit with over-voltage over-current protection |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180668A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Low-pass filter type waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
| CN105177205A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Trilinear drive type waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
| CN105177204A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Blast furnace superconduction cooling waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
| CN105219898A (en) * | 2015-10-10 | 2016-01-06 | 成都申川节能环保工程有限公司 | Based on the pressure-controlled vibration cogeneration energy-saving control system of over-voltage over-current protection |
| CN105238897A (en) * | 2015-10-10 | 2016-01-13 | 成都申川节能环保工程有限公司 | Energy-saving control system based on voltage stabilization and voltage transformation and used for blast furnace superconductive cooling waste heat power generation |
-
2014
- 2014-11-26 CN CN201420721463.2U patent/CN204316078U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180668A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Low-pass filter type waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
| CN105177205A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Trilinear drive type waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
| CN105177204A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Blast furnace superconduction cooling waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
| CN105219898A (en) * | 2015-10-10 | 2016-01-06 | 成都申川节能环保工程有限公司 | Based on the pressure-controlled vibration cogeneration energy-saving control system of over-voltage over-current protection |
| CN105238897A (en) * | 2015-10-10 | 2016-01-13 | 成都申川节能环保工程有限公司 | Energy-saving control system based on voltage stabilization and voltage transformation and used for blast furnace superconductive cooling waste heat power generation |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHAO YANFEN Free format text: FORMER OWNER: CHENGDU NEOCREATEC CO., LTD. Effective date: 20150520 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Yanfen Inventor before: Liu Fang Inventor before: Xie Jing |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610000 CHENGDU, SICHUAN PROVINCE TO: 454892 JIAOZUO, HENAN PROVINCE Free format text: CORRECT: INVENTOR; FROM: LIU FANG XIE JING TO: ZHAO YANFEN |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150520 Address after: 454892 Henan Province, Wenxian County Tian town before Yang Village 2 rows Patentee after: Zhao Yanfen Address before: 610000 Sichuan city of Chengdu province high tech Zone Guixi Industrial Park Patentee before: Chengdu NeoCreatec Corp. Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160817 Address after: 200233 room 420H, building, No. 509, Xuhui District, Shanghai, Caobao Road Patentee after: SHANGHAI JIAQI NETWORK SCIENCE & TECHNOLOGY CO., LTD. Address before: 454892 Henan Province, Wenxian County Tian town before Yang Village 2 rows Patentee before: Zhao Yanfen |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20171126 |