CN104253406A - Protective circuit capable of regulating rated voltage and rated current - Google Patents
Protective circuit capable of regulating rated voltage and rated current Download PDFInfo
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- CN104253406A CN104253406A CN201310257070.0A CN201310257070A CN104253406A CN 104253406 A CN104253406 A CN 104253406A CN 201310257070 A CN201310257070 A CN 201310257070A CN 104253406 A CN104253406 A CN 104253406A
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- resistance
- potentiometer
- diode
- transformer
- thyristor
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Abstract
The invention discloses a protective circuit capable of regulating rated voltage and rated current. The protective circuit comprises a first switch, a second switch, a first transformer, a second transformer, a bridge rectifier circuit, a first diode, a second diode, a third diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first potentiometer, a second potentiometer, a third potentiometer, a first relay, a second relay, a first light emitting diode, a second light emitting diode, a capacitor, a first thyristor and a second thyristor. According to the protective circuit capable of regulating the rated voltage and the rated current, when voltage of a protected circuit exceeds a rated value or a load circuit is short or exceeds rated output power, the protective circuit can automatically cut off the protected circuit to avoid a danger; and in addition, the rated voltage and rated power can be regulated by regulating the potentiometers, so that the protective circuit can adapt to more service environments.
Description
Technical field
The present invention relates to a kind of protective circuit, particularly relate to a kind of protective circuit that can regulate rated voltage and rated current.
Background technology
The discovery of electricity and application save manual labor and the mental labour of the mankind greatly, but electricity also can burn out electrical equipment simultaneously, causes fire, or people is got an electric shock.Therefore the auxiliary circuit of numerous protection people life security also enters the sight line of people; but the rated voltage of present most of overcurrent and superpotential protective circuit and rated current are fixing nonadjustable, so need to change different protective circuits in different environments for use.Summary of the invention
Object of the present invention is just to provide a kind of protective circuit that can regulate rated voltage and rated current to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The protective circuit that can regulate rated voltage and rated current, comprises the first switch, second switch, first transformer, second transformer, bridge rectifier, first diode, second diode, 3rd diode, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, first potentiometer, second potentiometer, 3rd potentiometer, first relay, second relay, first light-emitting diode, second light-emitting diode, electric capacity, first thyristor and the second thyristor, the first end of described first switch is connected with the first output of protected circuit, second end of described first switch is connected with the first end of described second switch, be connected with the first end of a winding of described second transformer after second terminating load of described second switch, second end of a winding of described second transformer is connected with the second output of protected circuit, a winding switching of described first transformer is between two wires of protected circuit, the first end of the secondary winding of described first transformer is connected with the first ac input end of described bridge rectifier, second end of the secondary winding of described first transformer is connected with the second ac input end of described bridge rectifier, the cathode output end of described bridge rectifier respectively with the first end of the secondary winding of described second transformer, the first end of described second resistance, the first end of described 3rd resistance, the negative pole of described first thyristor is connected with the negative pole of described second thyristor, second end of the secondary winding of described second transformer is connected with the positive pole of described first diode, the negative pole of described first diode is connected with the first end of described first resistance, second end of described first resistance is connected with the second end of described second resistance and the first end of described first potentiometer respectively, the gate pole of described first thyristor respectively with the second end of described first potentiometer, the sliding end of described first potentiometer is connected with the first end of described second potentiometer, and the cathode output end of described bridge rectifier is respectively at the first end of described electric capacity, the first end of described 4th resistance, the first end of described first relay, the negative pole of described second diode, the first end of described 5th resistance, the first end of described second relay, the negative pole of described 3rd diode is connected with the first end of described 6th resistance, the second end ground connection of described electric capacity, the second end of described 4th resistance respectively with the second end of described 3rd resistance, second end of described second potentiometer, the sliding end of described second potentiometer connects, the first end of described 3rd potentiometer is connected with the sliding end of described 3rd potentiometer, the second end of described first relay respectively with the positive pole of described first thyristor, the positive pole of described second diode is connected with the negative pole of described first light-emitting diode, and the positive pole of described first light-emitting diode is connected with the second end of described 5th resistance, the second end of described second relay respectively with the positive pole of described 3rd diode, the positive pole of described second thyristor is connected with the negative pole of described second light-emitting diode, and the positive pole of described second light-emitting diode is connected with the second end of described 6th resistance, and the gate pole of described second thyristor is connected with the second end of described 3rd potentiometer.
Beneficial effect of the present invention is:
A kind of protective circuit that can regulate rated voltage and rated current of the present invention; when the voltage overrate of protected circuit or when protected circuit short circuit or when exceeding output-current rating; protective circuit will disconnect protected circuit automatically to prevent dangerous generation; rated voltage and rated current can be regulated by regulator potentiometer simultaneously, make protective circuit be applicable to more environment for use.
Accompanying drawing explanation
Fig. 1 is that the present invention can to the circuit diagram of the protective circuit that rated voltage and rated current regulate.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the protective circuit that the present invention can regulate rated voltage and rated current, comprises the first switch S 1, second switch S2, first transformer T1, second transformer T2, bridge rectifier BR, first diode D1, second diode D2, 3rd diode D3, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, first potentiometer RP1, second potentiometer RP2, 3rd potentiometer RP3, first relay K 1, second relay K 2, first LED 1, second LED 2, electric capacity C, first thyristor V1 and the second thyristor V2, the first end of the first switch S 1 is connected with the first output of protected circuit, second end of the first switch S 1 is connected with the first end of second switch S2, be connected with the first end of a winding of the second transformer T2 after second terminating load of second switch S2, second end of a winding of the second transformer T2 is connected with the second output of protected circuit, a winding switching of the first transformer T1 is between two wires of protected circuit, the first end of the secondary winding of the first transformer T1 is connected with first ac input end of bridge rectifier BR, second end of the secondary winding of the first transformer T1 is connected with second ac input end of bridge rectifier BR, the cathode output end of bridge rectifier BR respectively with the first end of the secondary winding of the second transformer T2, the first end of the second resistance R2, the first end of the 3rd resistance R3, the negative pole of the first thyristor V1 is connected with the negative pole of the second thyristor V2, second end of the secondary winding of the second transformer T2 is connected with the positive pole of the first diode D1, the negative pole of the first diode D1 is connected with the first end of the first resistance R1, second end of the first resistance R1 is connected with the second segment of the second resistance R2 and the first end of the first potentiometer RP1 respectively, the gate pole of the first thyristor V1 respectively with second end of the first potentiometer RP1, the sliding end of the first potentiometer RP1 is connected with the first end of the second potentiometer RP2, and the cathode output end of bridge rectifier BR is respectively at the first end of electric capacity C, the first end of the 4th resistance R4, the first end of the first relay K 1, the negative pole of the second diode D2, the first end of the 5th resistance R5, the first end of the second relay K 2, the negative pole of the 3rd diode D3 is connected with the first end of the 6th resistance R6, the second end ground connection of electric capacity C, second end of the 4th resistance R4 respectively with second end of the 3rd resistance R3, second end of the second potentiometer RP2, the sliding end of the second potentiometer RP2 connects, the first end of the 3rd potentiometer RP3 is connected with the sliding end of the 3rd potentiometer RP3, the second end of the first relay K 1 respectively with the positive pole of the first thyristor V1, the positive pole of the second diode D2 is connected with the negative pole of the first LED 1, and the positive pole of the first LED 1 is connected with second end of the 5th resistance R5, the second end of the second relay K 2 respectively with the positive pole of the 3rd diode D3, the positive pole of the second thyristor V2 is connected with the negative pole of the second LED 2, and the positive pole of the second LED 2 is connected with second end of the 6th resistance R6, and the gate pole of the second thyristor V2 is connected with second end of the 3rd potentiometer RP3.
The present invention can be as follows to the operation principle of the protective circuit that rated voltage and rated current regulate:
When protected circuit is in rated range, the first relay K 1 is failure to actuate, and the second relay K 2 action closes, and the second LED 2 is lighted, protected circuit connection work.
When the voltage overrate of protected circuit; the secondary winding of the first transformer T1 exports and also increases thereupon; the first thyristor V1 conducting is made after the 3rd resistance R3, the 4th resistance R4 and the second potentiometer RP2; first relay K 1 adhesive; first LED 1 is lighted, the first switch S 1 normally-closed contact disconnecting consumers.When protected circuit short circuit or when exceeding rated current; the secondary winding induced voltage of the second transformer T2 raises; after the first diode D1, the first resistance R1, the second resistance R2 and the first potentiometer RP1, make the first thyristor V1 conducting, the actuating of relay closes, and disconnects protected circuit.
Load voltage value is regulated by the second potentiometer RP2 and the 3rd potentiometer RP3, and load current value is regulated by the first potentiometer RP1.
Claims (1)
1. the protective circuit that can regulate rated voltage and rated current, is characterized in that: comprise the first switch, second switch, first transformer, second transformer, bridge rectifier, first diode, second diode, 3rd diode, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, first potentiometer, second potentiometer, 3rd potentiometer, first relay, second relay, first light-emitting diode, second light-emitting diode, electric capacity, first thyristor and the second thyristor, the described first end of the first switch is connected with the first input end of protected circuit, second end of described first switch is connected with the first end of described second switch, be connected with the first end of a winding of described second transformer after second terminating load of described second switch, second end of a winding of described second transformer is connected with the second input of protected circuit, the first end of the secondary winding of described first transformer is connected with the first ac input end of described bridge rectifier, second end of the secondary winding of described first transformer is connected with the second ac input end of described bridge rectifier, the cathode output end of described bridge rectifier respectively with the first end of the secondary winding of described second transformer, the first end of described second resistance, the first end of described 3rd resistance, the negative pole of described first thyristor is connected with the negative pole of described second thyristor, second end of the secondary winding of described second transformer is connected with the positive pole of described first diode, the negative pole of described first diode is connected with the first end of described first resistance, second end of described first resistance is connected with the second end of described second resistance and the first end of described first potentiometer respectively, the gate pole of described first thyristor respectively with the second end of described first potentiometer, the sliding end of described first potentiometer is connected with the first end of described second potentiometer, and the cathode output end of described bridge rectifier is respectively at the first end of described electric capacity, the first end of described 4th resistance, the first end of described first relay, the negative pole of described second diode, the first end of described 5th resistance, the first end of described second relay, the negative pole of described 3rd diode is connected with the first end of described 6th resistance, the second end ground connection of described electric capacity, the second end of described 4th resistance respectively with the second end of described 3rd resistance, second end of described second potentiometer, the sliding end of described second potentiometer connects, the first end of described 3rd potentiometer is connected with the sliding end of described 3rd potentiometer, the second end of described first relay respectively with the positive pole of described first thyristor, the positive pole of described second diode is connected with the negative pole of described first light-emitting diode, and the positive pole of described first light-emitting diode is connected with the second end of described 5th resistance, the second end of described second relay respectively with the positive pole of described 3rd diode, the positive pole of described second thyristor is connected with the negative pole of described second light-emitting diode, and the positive pole of described second light-emitting diode is connected with the second end of described 6th resistance, and the gate pole of described second thyristor is connected with the second end of described 3rd potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310257070.0A CN104253406A (en) | 2013-06-26 | 2013-06-26 | Protective circuit capable of regulating rated voltage and rated current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310257070.0A CN104253406A (en) | 2013-06-26 | 2013-06-26 | Protective circuit capable of regulating rated voltage and rated current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104253406A true CN104253406A (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310257070.0A Pending CN104253406A (en) | 2013-06-26 | 2013-06-26 | Protective circuit capable of regulating rated voltage and rated current |
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| Country | Link |
|---|---|
| CN (1) | CN104253406A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636472Y (en) * | 2003-06-27 | 2004-08-25 | 李乾良 | Electron type rated current adjustable protector |
| KR20100080177A (en) * | 2008-12-31 | 2010-07-08 | 엘에스산전 주식회사 | Over current relay for rated current adjustment |
| CN202094598U (en) * | 2011-04-18 | 2011-12-28 | 颜福随 | Rated current adjustable leakage protector |
| CN203301121U (en) * | 2013-06-26 | 2013-11-20 | 成都昊地科技有限责任公司 | Protective circuit capable of adjusting rated voltage and rated current |
-
2013
- 2013-06-26 CN CN201310257070.0A patent/CN104253406A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636472Y (en) * | 2003-06-27 | 2004-08-25 | 李乾良 | Electron type rated current adjustable protector |
| KR20100080177A (en) * | 2008-12-31 | 2010-07-08 | 엘에스산전 주식회사 | Over current relay for rated current adjustment |
| CN202094598U (en) * | 2011-04-18 | 2011-12-28 | 颜福随 | Rated current adjustable leakage protector |
| CN203301121U (en) * | 2013-06-26 | 2013-11-20 | 成都昊地科技有限责任公司 | Protective circuit capable of adjusting rated voltage and rated current |
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Application publication date: 20141231 |