CN104466896A - Electric appliance multipurpose protective device - Google Patents
Electric appliance multipurpose protective device Download PDFInfo
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- CN104466896A CN104466896A CN201310426480.3A CN201310426480A CN104466896A CN 104466896 A CN104466896 A CN 104466896A CN 201310426480 A CN201310426480 A CN 201310426480A CN 104466896 A CN104466896 A CN 104466896A
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- triode
- resistance
- electric capacity
- diode
- potentiometer
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Abstract
The invention discloses an electric appliance multipurpose protective device, comprising a first resistor to an eleventh resistor, a transformer, a rectifier, a first capacitor to a third capacitor, a first diode, a second diode, a first triode to a fifth triode, a voltage-stabilizer tube, a potentiometer, and a TRIAC. Once input voltage exceeds preset voltage, the first triode is connected, and the second triode, the third triode, and the fourth triode are cut off. The TRIAC does not have trigger current and is switched off, and a main circuit is open. The off voltage can be preset by adjusting the potentiometer. The device can be used for power supply protection of various kinds of electric appliances, and application range is wide. The device can effectively protect electric appliances and improve service life of the electric appliances. Compared with the prior art, the device is characterized by simple circuit structure, few components, and low cost. The device is beneficial for popularization and spreading.
Description
Technical field
The present invention relates to a kind of Protector for electric appliances, particularly relate to a kind of over-pressure safety device being applicable to multiple electrical equipment.
Background technology
The overvoltage protector of electronic apparatus is that protector cuts off this circuit when the supply voltage of protected circuit is higher than certain numerical value; When supply voltage returns to normal range (NR), protector is connected automatically.And the application of overvoltage protector of the prior art is single, a protector is only for a kind of electrical equipment, and the scope of application is not extensively seen, and circuit structure is complicated, employing electronic component is many, cost is higher, is unfavorable for universal and promotes.
Summary of the invention
Object of the present invention is just to provide a kind of over-pressure safety device being applicable to multiple electrical equipment to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes transformer, rectifier, first resistance is to the 11 resistance, first electric capacity is to the 3rd electric capacity, first diode, second diode, first triode is to the 5th triode, voltage-stabiliser tube, potentiometer and bidirectional triode thyristor, the zero line of AC power simultaneously with the positive pole of described first diode, the first end of described primary is connected with the first end of described overvoltage crowbar output, the live wire of described AC power simultaneously with the first end of described bidirectional triode thyristor, the emitter of described second triode, the first end of described 11 resistance, the first end of described 3rd electric capacity, the described emitter of the 5th triode is connected with the second end of described primary, second end of described bidirectional triode thyristor is the second end of described overvoltage crowbar output, 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 first end of described potentiometer and the first end of described 3rd electric capacity simultaneously, the two ends of described transformer secondary output are connected with two inputs of described rectifier respectively, the cathode output end of described rectifier is connected with the first end of described second resistance and the collector electrode of described 5th triode simultaneously, second end of described second resistance is connected with the negative pole of described voltage-stabiliser tube and the base stage of described 5th triode simultaneously, the cathode output end of described rectifier is connected with the positive pole of described voltage-stabiliser tube, second end of described potentiometer is connected with the second end of described 11 resistance, the sliding end of described potentiometer is connected with the negative pole of described second diode, the positive pole of described second diode is connected with the first end of described tenth resistance, second end of described tenth resistance is connected with the base stage of described 4th triode and the first end of described second electric capacity simultaneously, the emitter of described 4th triode is connected with the first end of described 9th resistance and the emitter of described 3rd triode simultaneously, second end of described second electric capacity simultaneously with the first end of described 8th resistance, the base stage of described 3rd triode, the first end of described 7th resistance is connected with the first end of described first electric capacity, second end of described 8th resistance is connected with the second end of described 9th resistance, the collector electrode of described 4th triode simultaneously with the second end of described 7th resistance, second end of described first electric capacity is connected with the first end of described 6th resistance, second end of described 6th resistance is connected with the second end of described 5th resistance, the collector electrode of described second triode is connected with the first end of described 4th resistance and the first end of described 3rd resistance simultaneously, second end of described 4th resistance is connected with the emitter of described first triode, second end of described 3rd resistance is connected with the base stage of described first triode, the collector electrode of described first triode is connected with the control end of described bidirectional triode thyristor.
Beneficial effect of the present invention is:
The present invention can be suitable for the power protection with multiple electrical appliance; applied range, the useful life of effective protection electrical appliance and raising electrical appliance, and compared with prior art; have the advantages that circuit structure is simple, adopt element few, with low cost, be conducive to universal and promote.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: the present invention includes transformer T, rectifier DR, first resistance R1 is to the 11 resistance R11, first electric capacity C1 is to the 3rd electric capacity C3, first diode D1, second diode D2, first triode VT1 is to the 5th triode VT5, voltage-stabiliser tube DW, potentiometer RP and bidirectional triode thyristor SCR, the zero line of AC power simultaneously with the positive pole of the first diode D1, the elementary first end of transformer T is connected with the first end of overvoltage crowbar output OUT, the live wire of AC power simultaneously with the first end of bidirectional triode thyristor SCR, the emitter of the second triode VT2, the first end of the 11 resistance R11, the first end of the 3rd electric capacity C3, the second end that the emitter of the 5th triode VT5 is elementary with transformer T is connected, second end of bidirectional triode thyristor SCR is the second end of overvoltage crowbar output, 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 first end of potentiometer RP and the first end of the 3rd electric capacity C3 simultaneously, the two ends of transformer T level are connected with two inputs of rectifier DR respectively, the cathode output end of rectifier DR is connected with the first end of the second resistance R2 and the collector electrode of the 5th triode VT5 simultaneously, second end of the second resistance R2 is connected with the negative pole of voltage-stabiliser tube DW and the base stage of the 5th triode VT5 simultaneously, the cathode output end of rectifier DR is connected with the positive pole of voltage-stabiliser tube DW, second end of potentiometer RP is connected with second end of the 11 resistance R11, the sliding end of potentiometer RP is connected with the negative pole of the second diode D2, the positive pole of the second diode D2 is connected with the first end of the tenth resistance R11, second end of the tenth resistance R10 is connected with the base stage of the 4th triode VT4 and the first end of the second electric capacity C2 simultaneously, the emitter of the 4th triode VT4 is connected with the first end of the 9th resistance R9 and the emitter of the 3rd triode VT3 simultaneously, second end of the second electric capacity C2 simultaneously with the first end of the 8th resistance R8, the base stage of the 3rd triode VT3, the first end of the 7th resistance R7 is connected with the first end of the first electric capacity C1, second end of the 8th resistance R8 is connected with second end of the 9th resistance R9, the collector electrode of the 4th triode VT4 simultaneously with second end of the 7th resistance R7, second end of the first electric capacity C1 is connected with the first end of the 6th resistance R6, second end of the 6th resistance R6 is connected with second end of the 5th resistance R5, the collector electrode of the second triode VT2 is connected with the first end of the 4th resistance R4 and the first end of the 3rd resistance R3 simultaneously, second end of the 4th resistance R4 is connected with the emitter of the first triode VT1, second end of the 3rd resistance R3 is connected with the base stage of the first triode VT1, the collector electrode of the first triode VT1 is connected with the control end of bidirectional triode thyristor SCR.
As shown in Figure 1: when normally working; second triode VT2, the 3rd triode VT3, the 4th triode VT4 conducting; bidirectional triode thyristor SCR is triggered conducting; protected power supply is connected; once input voltage exceedes preset voltage, the first triode VT1 conducting, the second triode VT2, the 3rd triode VT3, the 4th triode VT4 by; bidirectional triode thyristor SCR triggerless electric current and turning off, major loop is disconnected.Regulator potentiometer RP, can preset off voltage.
Claims (1)
1. the multiplex protective device of electrical equipment, it is characterized in that: comprise transformer, rectifier, first resistance is to the 11 resistance, first electric capacity is to the 3rd electric capacity, first diode, second diode, first triode is to the 5th triode, voltage-stabiliser tube, potentiometer and bidirectional triode thyristor, the zero line of AC power simultaneously with the positive pole of described first diode, the first end of described primary is connected with the first end of described overvoltage crowbar output, the live wire of described AC power simultaneously with the first end of described bidirectional triode thyristor, the emitter of described second triode, the first end of described 11 resistance, the first end of described 3rd electric capacity, the described emitter of the 5th triode is connected with the second end of described primary, second end of described bidirectional triode thyristor is the second end of described overvoltage crowbar output, the cathode output end of described rectifier is connected with the positive pole of described voltage-stabiliser tube, second end of described potentiometer is connected with the second end of described 11 resistance, the sliding end of described potentiometer is connected with the negative pole of described second diode, the positive pole of described second diode is connected with the first end of described tenth resistance, second end of described tenth resistance is connected with the base stage of described 4th triode and the first end of described second electric capacity simultaneously, the emitter of described 4th triode is connected with the first end of described 9th resistance and the emitter of described 3rd triode simultaneously, 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 first end of described potentiometer and the first end of described 3rd electric capacity simultaneously, the two ends of described transformer secondary output are connected with two inputs of described rectifier respectively, the cathode output end of described rectifier is connected with the first end of described second resistance and the collector electrode of described 5th triode simultaneously, second end of described second resistance is connected with the negative pole of described voltage-stabiliser tube and the base stage of described 5th triode simultaneously, second end of described second electric capacity simultaneously with the first end of described 8th resistance, the base stage of described 3rd triode, the first end of described 7th resistance is connected with the first end of described first electric capacity, second end of described 8th resistance is connected with the second end of described 9th resistance, the collector electrode of described 4th triode simultaneously with the second end of described 7th resistance, second end of described first electric capacity is connected with the first end of described 6th resistance, second end of described 6th resistance is connected with the second end of described 5th resistance, the collector electrode of described second triode is connected with the first end of described 4th resistance and the first end of described 3rd resistance simultaneously, second end of described 4th resistance is connected with the emitter of described first triode, second end of described 3rd resistance is connected with the base stage of described first triode, the collector electrode of described first triode is connected with the control end of described bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426480.3A CN104466896A (en) | 2013-09-18 | 2013-09-18 | Electric appliance multipurpose protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426480.3A CN104466896A (en) | 2013-09-18 | 2013-09-18 | Electric appliance multipurpose protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104466896A true CN104466896A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310426480.3A Pending CN104466896A (en) | 2013-09-18 | 2013-09-18 | Electric appliance multipurpose protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104466896A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403756A (en) * | 2015-11-25 | 2016-03-16 | 佛山市顺德区澳骏电子科技有限公司 | Circuit device having ground wire live detection function |
-
2013
- 2013-09-18 CN CN201310426480.3A patent/CN104466896A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403756A (en) * | 2015-11-25 | 2016-03-16 | 佛山市顺德区澳骏电子科技有限公司 | Circuit device having ground wire live detection function |
| CN105403756B (en) * | 2015-11-25 | 2018-01-26 | 佛山市顺德区澳骏电子科技有限公司 | A kind of circuit arrangement with ground wire electrification detection function |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |