CN104362581A - Self-resetting electronic safety circuit - Google Patents
Self-resetting electronic safety circuit Download PDFInfo
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- CN104362581A CN104362581A CN201410736301.0A CN201410736301A CN104362581A CN 104362581 A CN104362581 A CN 104362581A CN 201410736301 A CN201410736301 A CN 201410736301A CN 104362581 A CN104362581 A CN 104362581A
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- resistance
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- electric capacity
- diode
- voltage stabilizing
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Abstract
The invention discloses a self-resetting electronic safety circuit. The self-resetting electronic safety circuit comprises first to fourth resistors, first to fourth capacitors, a first diode, a second diode, a first voltage stabilizing diode, a second voltage stabilizing diode, a light-emitting diode, a potentiometer, a current transformer, a relay, a triode, a bidirectional thyristor and a bridge rectifier circuit. According to the self-resetting electronic safety circuit, the current transformer samples load current; in case of overloading, the triode is switched on to enable the relay to operate, and a first normally closed contact switch of the relay is switched off and the bidirectional thyristor is shut down, so that the load is powered off; if the load returns to the normal condition after power failure, a second normally closed contact switch of the relay is switched off so that the circuit continuously supply power; the self-resetting electronic safety circuit is capable of resetting automatically.
Description
Technical field
The present invention relates to a kind of insurance circuit, particularly relate to a kind of electronic insurance circuit of self-replaced type.
Background technology
Along with the progress of science and technology, electric energy has become people's life and the indispensable energy in work, and the various electrical equipment utilizing electric energy to carry out work also enter our life and operational environment, but when there is larger overload current (fault or short circuit) in circuit, circuit may be made to burn out, there is serious damage, even fire may be triggered, all people become and have invented insurance circuit, the energy open circuit in time when circuit malfunctions, but after traditional insurance circuit open circuit, people are needed to start to be recovered, just can restore electricity, certain inconvenience is caused to the life of people.
Summary of the invention
Object of the present invention is just the electronic insurance circuit providing a kind of self-replaced type in order to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of electronic insurance circuit of self-replaced type, comprise the first resistance to the 4th resistance, first electric capacity is to the 4th electric capacity, first diode, second diode, first voltage stabilizing didoe, second voltage stabilizing didoe, light-emitting diode, potentiometer, current transformer, relay, triode, bidirectional thyristor and bridge rectifier, the first end of described first electric capacity is connected with civil power first-phase pipeline, second end of described first electric capacity is connected with the first ac input end of described bridge rectifier, second ac input end of described bridge rectifier is connected with civil power second-phase pipeline, the cathode output end of described bridge rectifier respectively with the first end of described second electric capacity, the negative pole of described second voltage stabilizing didoe, the negative pole of described second diode, the first end of described relay is connected with the first end of described first resistance, second end of described first resistance is connected with the positive pole of described light-emitting diode, the negative pole of described light-emitting diode respectively with the positive pole of described second diode, second end of described relay, the collector electrode of described triode is connected with the first end of the second normally opened contact switch of described relay, the base stage of described triode is connected with the positive pole of described first voltage stabilizing didoe, the negative pole of described first voltage stabilizing didoe is connected with the sliding end of described potentiometer, the first end of described potentiometer is connected with the first end of described second resistance and the first end of described 3rd electric capacity respectively, second end of described second resistance is connected with the negative pole of described first diode, the positive pole of described first diode is connected with the first end of the secondary winding of described current transformer, the cathode output end of described bridge rectifier respectively with the second end of described second electric capacity, the positive pole of described second voltage stabilizing didoe, second end of the secondary winding of described current transformer, second end of described 3rd electric capacity, second end of described potentiometer, the emitter of described triode is connected with the second end of the second normally opened contact switch of described relay, a winding of described current transformer and described bidirectional thyristor are connected with the first-phase pipeline of civil power, the first end of described 4th electric capacity respectively with the first end of a winding of described current transformer, the first end of described bidirectional thyristor, the first end of the first normally-closed contact switch of described relay connects, second end of described 4th electric capacity is connected with the first end of described 3rd resistance, second end of the first normally-closed contact switch of described relay is connected with the first end of described 4th resistance, described second end of the 3rd resistance is connected with the second end of described bidirectional thyristor, second end of described 4th resistance is connected with the gate pole of described bidirectional thyristor.
Beneficial effect of the present invention is:
The electronic insurance circuit of self-replaced type of the present invention is sampled load current by current transformer, once there is overload, triode ON, makes the actuating of relay, and the first normally-closed contact switch of relay disconnects, bidirectional thyristor ends, make load power down, if power-off back loading recovers normal, the second normally opened contact switch of relay closes, make circuit continue power supply, use the present invention that insurance circuit can be made to automatically reset.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the electronic insurance circuit of self-replaced type of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the electronic insurance circuit of self-replaced type of the present invention, comprise the first resistance R1 to the 4th resistance R4, first electric capacity C1 is to the 4th electric capacity C4, first diode D1, second diode D2, first voltage stabilizing didoe ZD1, second voltage stabilizing didoe ZD2, LED, potentiometer RP, current transformer T, relay K, triode VT, bidirectional thyristor VS and bridge rectifier BR, the first end of the first electric capacity C1 is connected with civil power first-phase pipeline, second end of the first electric capacity C1 is connected with first ac input end of bridge rectifier BR, second ac input end of bridge rectifier BR is connected with civil power second-phase pipeline, the cathode output end of bridge rectifier BR respectively with the first end of the second electric capacity C2, the negative pole of the second voltage stabilizing didoe ZD2, the negative pole of the second diode D2, the first end of relay K is connected with the first end of the first resistance R1, second end of the first resistance R1 is connected with the positive pole of LED, the negative pole of LED respectively with the positive pole of the second diode D2, second end of relay K, the collector electrode of triode VT is connected with the first end of the second normally opened contact K switch-2 of relay K, the base stage of triode VT is connected with the positive pole of the first voltage stabilizing didoe ZD1, the negative pole of the first voltage stabilizing didoe ZD1 is connected with the sliding end of potentiometer RP, the first end of potentiometer RP is connected with the first end of the second resistance R2 and the first end of the 3rd electric capacity C3 respectively, second end of the second resistance R2 is connected with the negative pole of the first diode D1, the positive pole of the first diode D1 is connected with the first end of the secondary winding of current transformer T, the cathode output end of bridge rectifier BR respectively with second end of the second electric capacity C2, the positive pole of the second voltage stabilizing didoe ZD2, second end of the secondary winding of current transformer T, second end of the 3rd electric capacity C3, second end of potentiometer RP, the emitter of triode VT is connected with the second end of the second normally opened contact K switch-2 of relay K, a winding of current transformer T and bidirectional thyristor VS connect with the first-phase pipeline of civil power, the first end of the 4th electric capacity C4 respectively with the first end of a winding of current transformer T, the first end of bidirectional thyristor VS, the first end of the first normally-closed contact K switch-1 of relay K connects, second end of the 4th electric capacity C4 is connected with the first end of the 3rd resistance R3, second end of the first normally-closed contact K switch-1 of relay K is connected with the first end of the 4th resistance R4, second end of the 3rd resistance R3 is connected with second end of bidirectional thyristor VS, second end of the 4th resistance R4 is connected with the gate pole of bidirectional thyristor VS.
The operation principle of the electronic insurance circuit of self-replaced type of the present invention is as follows:
Insurance circuit is sampled load current by current transformer T, once there is overload, triode VT conducting, make relay K action, the first normally-closed contact K switch-1 of relay K disconnects, and bidirectional thyristor VS ends, make load power down, if power-off back loading recovers normal, the second normally opened contact K switch-2 of relay K closes, and makes circuit continue power supply.
Claims (1)
1. the electronic insurance circuit of a self-replaced type, it is characterized in that: comprise the first resistance to the 4th resistance, first electric capacity is to the 4th electric capacity, first diode, second diode, first voltage stabilizing didoe, second voltage stabilizing didoe, light-emitting diode, potentiometer, current transformer, relay, triode, bidirectional thyristor and bridge rectifier, the first end of described first electric capacity is connected with civil power first-phase pipeline, second end of described first electric capacity is connected with the first ac input end of described bridge rectifier, second ac input end of described bridge rectifier is connected with civil power second-phase pipeline, the cathode output end of described bridge rectifier respectively with the first end of described second electric capacity, the negative pole of described second voltage stabilizing didoe, the negative pole of described second diode, the first end of described relay is connected with the first end of described first resistance, second end of described first resistance is connected with the positive pole of described light-emitting diode, the negative pole of described light-emitting diode respectively with the positive pole of described second diode, second end of described relay, the collector electrode of described triode is connected with the first end of the second normally opened contact switch of described relay, the base stage of described triode is connected with the positive pole of described first voltage stabilizing didoe, the negative pole of described first voltage stabilizing didoe is connected with the sliding end of described potentiometer, the first end of described potentiometer is connected with the first end of described second resistance and the first end of described 3rd electric capacity respectively, second end of described second resistance is connected with the negative pole of described first diode, the positive pole of described first diode is connected with the first end of the secondary winding of described current transformer, the cathode output end of described bridge rectifier respectively with the second end of described second electric capacity, the positive pole of described second voltage stabilizing didoe, second end of the secondary winding of described current transformer, second end of described 3rd electric capacity, second end of described potentiometer, the emitter of described triode is connected with the second end of the second normally opened contact switch of described relay, a winding of described current transformer and described bidirectional thyristor are connected with the first-phase pipeline of civil power, the first end of described 4th electric capacity respectively with the first end of a winding of described current transformer, the first end of described bidirectional thyristor, the first end of the first normally-closed contact switch of described relay connects, second end of described 4th electric capacity is connected with the first end of described 3rd resistance, second end of the first normally-closed contact switch of described relay is connected with the first end of described 4th resistance, described second end of the 3rd resistance is connected with the second end of described bidirectional thyristor, second end of described 4th resistance is connected with the gate pole of described bidirectional thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736301.0A CN104362581A (en) | 2014-12-05 | 2014-12-05 | Self-resetting electronic safety circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736301.0A CN104362581A (en) | 2014-12-05 | 2014-12-05 | Self-resetting electronic safety circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104362581A true CN104362581A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410736301.0A Pending CN104362581A (en) | 2014-12-05 | 2014-12-05 | Self-resetting electronic safety circuit |
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| Country | Link |
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| CN (1) | CN104362581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294068A (en) * | 2017-06-21 | 2017-10-24 | 西安科技大学 | A kind of secure power device |
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|---|---|---|---|---|
| CN2438250Y (en) * | 2000-08-11 | 2001-07-04 | 袁之金 | Automatic circuit on-off controller |
| CN201032683Y (en) * | 2007-01-09 | 2008-03-05 | 高子泉 | Overcurrent protection circuit |
| CN201234116Y (en) * | 2008-07-25 | 2009-05-06 | 上海市城市排水市南运营有限公司 | Automatic electricity quantity limiter |
| CN201274418Y (en) * | 2008-08-18 | 2009-07-15 | 陈如柏 | Electricity limiter capable of presetting amplitude of current |
| CN203747367U (en) * | 2014-03-21 | 2014-07-30 | 国家电网公司 | Alternating current circuit switching-on and switching-off device adopting bidirectional thyristor |
| CN204290263U (en) * | 2014-12-05 | 2015-04-22 | 成都安思科技有限公司 | The electronic insurance circuit of self-replaced type |
-
2014
- 2014-12-05 CN CN201410736301.0A patent/CN104362581A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438250Y (en) * | 2000-08-11 | 2001-07-04 | 袁之金 | Automatic circuit on-off controller |
| CN201032683Y (en) * | 2007-01-09 | 2008-03-05 | 高子泉 | Overcurrent protection circuit |
| CN201234116Y (en) * | 2008-07-25 | 2009-05-06 | 上海市城市排水市南运营有限公司 | Automatic electricity quantity limiter |
| CN201274418Y (en) * | 2008-08-18 | 2009-07-15 | 陈如柏 | Electricity limiter capable of presetting amplitude of current |
| CN203747367U (en) * | 2014-03-21 | 2014-07-30 | 国家电网公司 | Alternating current circuit switching-on and switching-off device adopting bidirectional thyristor |
| CN204290263U (en) * | 2014-12-05 | 2015-04-22 | 成都安思科技有限公司 | The electronic insurance circuit of self-replaced type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294068A (en) * | 2017-06-21 | 2017-10-24 | 西安科技大学 | A kind of secure power device |
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| PB01 | Publication | ||
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Application publication date: 20150218 |