CN203301121U - Protective circuit capable of adjusting rated voltage and rated current - Google Patents
Protective circuit capable of adjusting rated voltage and rated current Download PDFInfo
- Publication number
- CN203301121U CN203301121U CN2013203698622U CN201320369862U CN203301121U CN 203301121 U CN203301121 U CN 203301121U CN 2013203698622 U CN2013203698622 U CN 2013203698622U CN 201320369862 U CN201320369862 U CN 201320369862U CN 203301121 U CN203301121 U CN 203301121U
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- resistance
- potentiometer
- diode
- transformer
- thyristor
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Abstract
The utility model discloses a protective circuit capable of adjusting a rated voltage and a 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 adjusting the rated voltage and the rated current, when the voltage of a protected circuit exceeds the rated value, or short circuit of the protected circuit occurs, or a rated output power is exceeded, the protective circuit automatically switches off the protected circuit to avoid danger, and the rated voltage and rated power can be adjusted by regulating the potentiometers, so that the protective circuit is suitable for various application environments.
Description
Technical field
The utility model relates to a kind of protective circuit, relates in particular to a kind of protective circuit that can regulate rated voltage and rated current.
Background technology
The mankind's manual labor and mental labour has been saved in the discovery of electricity and application greatly, but electricity also can burn out electrical equipment simultaneously, causes fire, and the people is got an electric shock.Therefore the auxiliary circuit of numerous protection people life securities has also entered people's sight line; but the rated voltage of present most of overcurrent and superpotential protective circuit and rated current are fixing nonadjustable, so in different environments for use, need to change different protective circuits.
The utility model content
The purpose of this utility model just is to provide in order to address the above problem a kind of protective circuit that can regulate rated voltage and rated current.
The utility model is achieved through the following technical solutions above-mentioned purpose:
a kind of protective circuit that can regulate rated voltage and rated current, comprise the first switch, second switch, the first transformer, the second transformer, bridge rectifier, the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first potentiometer, the second potentiometer, the 3rd potentiometer, the first relay, the second relay, the first light-emitting diode, the second light-emitting diode, electric capacity, the first thyristor and the second thyristor, the first end of described the first switch is connected with the first output of protected circuit, the second end of described the first switch is connected with the first end of described second switch, be connected with the first end of a winding of described the second transformer after the second termination load of described second switch, the second end of a winding of described the second transformer is connected with the second output of protected circuit, a winding of described the first transformer is connected between two wires of protected circuit, the first end of the secondary winding of described the first transformer is connected with the first ac input end of described bridge rectifier, the second end of the secondary winding of described the 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 the second transformer, the first end of described the second resistance, the first end of described the 3rd resistance, the negative pole of described the first thyristor be connected the negative pole of the second thyristor and connect, the second end of the secondary winding of described the second transformer is connected with the positive pole of described the first diode, the negative pole of described the first diode is connected with the first end of described the first resistance, the second end of described the first resistance respectively with the second end of described the second resistance be connected the first end of the first potentiometer and be connected, the gate pole of described the first thyristor respectively with the second end of described the first potentiometer, the sliding end of described the first potentiometer be connected the first end of the second potentiometer and connect, the cathode output end of described bridge rectifier is respectively at the first end of described electric capacity, the first end of described the 4th resistance, the first end of described the first relay, the negative pole of described the second diode, the first end of described the 5th resistance, the first end of described the second relay, the negative pole of described the 3rd diode be connected the first end of the 6th resistance and connect, the second end ground connection of described electric capacity, the second end of described the 4th resistance respectively with the second end of described the 3rd resistance, the second end of described the second potentiometer, the sliding end of described the second potentiometer connects, the first end of described the 3rd potentiometer be connected the sliding end of the 3rd potentiometer and connect, the second end of described the first relay respectively with the positive pole of described the first thyristor, the positive pole of described the second diode be connected the negative pole of the first light-emitting diode and connect, the positive pole of described the first light-emitting diode is connected with the second end of described the 5th resistance, the second end of described the second relay respectively with the positive pole of described the 3rd diode, the positive pole of described the second thyristor be connected the negative pole of the second light-emitting diode and connect, the positive pole of described the second light-emitting diode is connected with the second end of described the 6th resistance, the gate pole of described the second thyristor is connected with the second end of described the 3rd potentiometer.
The beneficial effects of the utility model are:
A kind of protective circuit that can regulate rated voltage and rated current of the utility model; during when the voltage overrate of protected circuit or when the protected circuit short circuit or over output-current rating; protective circuit will the automatic disconnection protected circuit occur to prevent danger; simultaneously can regulate rated voltage and rated current by regulator potentiometer, make protective circuit be applicable to more environment for use.
Description of drawings
Fig. 1 is the circuit diagram of the protective circuit that can regulate rated voltage and rated current of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1, the protective circuit that the utility model can be regulated rated voltage and rated current, comprise the first switch S 1, second switch S2, the first transformer T1, the second transformer T2, bridge rectifier BR, the first diode D1, the second diode D2, the 3rd diode D3, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the first potentiometer RP1, the second potentiometer RP2, the 3rd potentiometer RP3, the first relay K 1, the second relay K 2, the first LED 1, the second LED 2, capacitor C, the 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, the 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 the winding of the second transformer T2 after the second termination load of second switch S2, the second end of the winding of the second transformer T2 is connected with the second output of protected circuit, the winding of the first transformer T1 is connected between two wires of protected circuit, the first end of the secondary winding of the first transformer T1 is connected with the first ac input end of bridge rectifier BR, the second end of the secondary winding of the first transformer T1 is connected with the 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 R 2, the first end of the 3rd resistance R 3, the negative pole of the first thyristor V1 be connected the negative pole of thyristor V2 and connect, the 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 R 1, the second end of the first resistance R 1 respectively with the second segment of the second resistance R 2 be connected the first end of potentiometer RP1 and be connected, the gate pole of the first thyristor V1 respectively with the second end of the first potentiometer RP1, the sliding end of the first potentiometer RP1 be connected the first end of potentiometer RP2 and connect, the cathode output end of bridge rectifier BR is respectively at the first end of capacitor C, the first end of the 4th resistance R 4, the first end of the first relay K 1, the negative pole of the second diode D2, the first end of the 5th resistance R 5, the first end of the second relay K 2, the first end of the negative pole of the 3rd diode D3 and the 6th resistance R 6 connects, the second end ground connection of capacitor C, the second end of the 4th resistance R 4 respectively with the second end of the 3rd resistance R 3, the second end of the second potentiometer RP2, the sliding end of the second potentiometer RP2 connects, the sliding end of the first end of the 3rd potentiometer RP3 and the 3rd potentiometer RP3 connects, 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 be connected the negative pole of LED 1 and connect, the positive pole of the first LED 1 is connected with the second end of the 5th resistance R 5, 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 be connected the negative pole of LED 2 and connect, the positive pole of the second LED 2 is connected with the second end of the 6th resistance R 6, the gate pole of the second thyristor V2 is connected with the second end of the 3rd potentiometer RP3.
The operation principle of the protective circuit that the utility model can be regulated rated voltage and rated current is as follows:
When protected circuit was in rated range, the first relay K 1 was failure to actuate, and the second relay K 2 actions are closed, and the second LED 2 is lighted, protected circuit connection work.
When the voltage overrate of protected circuit; the secondary winding output of the first transformer T1 is also increased thereupon; make the first thyristor V1 conducting after the 3rd resistance R 3, the 4th resistance R 4 and the second potentiometer RP2; the first relay K 1 adhesive; the first LED 1 is lighted, the first switch S 1 normally-closed contact disconnecting consumers.During when the protected circuit short circuit or over rated current; the secondary winding induced voltage of the second transformer T2 raises; make the first thyristor V1 conducting after the first diode D1, the first resistance R 1, the second resistance R 2 and the first potentiometer RP1, the actuating of relay is closed, 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, the first transformer, the second transformer, bridge rectifier, the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first potentiometer, the second potentiometer, the 3rd potentiometer, the first relay, the second relay, the first light-emitting diode, the second light-emitting diode, electric capacity, the first thyristor and the second thyristor, the first end of described the first switch is connected with the first input end of protected circuit, the second end of described the first switch is connected with the first end of described second switch, be connected with the first end of a winding of described the second transformer after the second termination load of described second switch, the second end of a winding of described the second transformer is connected with the second input of protected circuit, the first end of the secondary winding of described the first transformer is connected with the first ac input end of described bridge rectifier, the second end of the secondary winding of described the 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 the second transformer, the first end of described the second resistance, the first end of described the 3rd resistance, the negative pole of described the first thyristor be connected the negative pole of the second thyristor and connect, the second end of the secondary winding of described the second transformer is connected with the positive pole of described the first diode, the negative pole of described the first diode is connected with the first end of described the first resistance, the second end of described the first resistance respectively with the second end of described the second resistance be connected the first end of the first potentiometer and be connected, the gate pole of described the first thyristor respectively with the second end of described the first potentiometer, the sliding end of described the first potentiometer be connected the first end of the second potentiometer and connect, the cathode output end of described bridge rectifier is respectively at the first end of described electric capacity, the first end of described the 4th resistance, the first end of described the first relay, the negative pole of described the second diode, the first end of described the 5th resistance, the first end of described the second relay, the negative pole of described the 3rd diode be connected the first end of the 6th resistance and connect, the second end ground connection of described electric capacity, the second end of described the 4th resistance respectively with the second end of described the 3rd resistance, the second end of described the second potentiometer, the sliding end of described the second potentiometer connects, the first end of described the 3rd potentiometer be connected the sliding end of the 3rd potentiometer and connect, the second end of described the first relay respectively with the positive pole of described the first thyristor, the positive pole of described the second diode be connected the negative pole of the first light-emitting diode and connect, the positive pole of described the first light-emitting diode is connected with the second end of described the 5th resistance, the second end of described the second relay respectively with the positive pole of described the 3rd diode, the positive pole of described the second thyristor be connected the negative pole of the second light-emitting diode and connect, the positive pole of described the second light-emitting diode is connected with the second end of described the 6th resistance, the gate pole of described the second thyristor is connected with the second end of described the 3rd potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203698622U CN203301121U (en) | 2013-06-26 | 2013-06-26 | Protective circuit capable of adjusting rated voltage and rated current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203698622U CN203301121U (en) | 2013-06-26 | 2013-06-26 | Protective circuit capable of adjusting rated voltage and rated current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301121U true CN203301121U (en) | 2013-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203698622U Expired - Fee Related CN203301121U (en) | 2013-06-26 | 2013-06-26 | Protective circuit capable of adjusting rated voltage and rated current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253406A (en) * | 2013-06-26 | 2014-12-31 | 成都昊地科技有限责任公司 | Protective circuit capable of regulating rated voltage and rated current |
| CN104659738A (en) * | 2014-12-26 | 2015-05-27 | 国家电网公司 | Low-cost over-voltage and over-current protection circuit for household power network |
-
2013
- 2013-06-26 CN CN2013203698622U patent/CN203301121U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253406A (en) * | 2013-06-26 | 2014-12-31 | 成都昊地科技有限责任公司 | Protective circuit capable of regulating rated voltage and rated current |
| CN104659738A (en) * | 2014-12-26 | 2015-05-27 | 国家电网公司 | Low-cost over-voltage and over-current protection circuit for household power network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140626 |
|
| EXPY | Termination of patent right or utility model |