CN204516685U - A kind of under-voltage replay drive circuit - Google Patents
A kind of under-voltage replay drive circuit Download PDFInfo
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- CN204516685U CN204516685U CN201520276942.2U CN201520276942U CN204516685U CN 204516685 U CN204516685 U CN 204516685U CN 201520276942 U CN201520276942 U CN 201520276942U CN 204516685 U CN204516685 U CN 204516685U
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- relay
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Abstract
The utility model discloses a kind of under-voltage replay drive circuit, comprise resistance R1, double base diode V1, triode V2, relay J, unidirectional controllable silicon S CR and key switch AN1, key switch AN1 one end connects power supply VCC respectively and relay J contact switch J-1, the key switch AN1 other end connects relay J contact switch J-1 and key switch AN2 respectively.The utility model under-voltage replay drive circuit makes its adhesive when starting to relay starting resistor, and then works under being allowed to condition at lower supply voltage, reduces energy waste, and circuit structure is simple, and cost is low, is applicable to very much promoting the use of.
Description
Technical field
The utility model relates to a kind of drive circuit, specifically a kind of under-voltage replay drive circuit.
Background technology
Relay is as the control element in electrical control, the scope of application widely, but the drive current of relay is more much bigger than its operating current, in fact, relay is once adhesive, just reliably can work about the half of rated voltage, but unnecessary large power supply often will be used to power to it, waste electric energy greatly.
Utility model content
The purpose of this utility model is to provide a kind of circuit structure simple under-voltage replay drive circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of under-voltage replay drive circuit, comprise resistance R1, double base diode V1, triode V2, relay J, unidirectional controllable silicon S CR and key switch AN1, described key switch AN1 one end connects power supply VCC and relay J contact switch J-1 respectively, the key switch AN1 other end connects relay J contact switch J-1 and key switch AN2 respectively, the key switch AN2 other end connects the A pole of relay J contact switch J-2 and unidirectional controllable silicon S CR respectively, the K pole of unidirectional controllable silicon S CR connects relay J coil, the relay J coil other end connects electric capacity C2 and diode D1 positive pole respectively, diode D1 negative pole is connecting triode V2 emitter respectively, resistance R3 and electric capacity C1, the G pole of described unidirectional controllable silicon S CR connects electric capacity C3, the electric capacity C3 other end connects diode D2 negative pole, diode D2 positive pole is the contact resistance R3 other end respectively, first base stage of triode V2 base stage and double base diode V1, the second base stage contact resistance R2 of double base diode V1, the resistance R2 other end is contact resistance R1 respectively, resistance R4 and relay J contact J-2, the resistance R4 other end connects the electric capacity C2 other end and triode V2 collector electrode respectively.
As further program of the utility model: described double base diode V1 model is BT33C.
As the utility model further scheme: described unidirectional controllable silicon S CR model is TL431.
Compared with prior art, the beneficial effects of the utility model are: the utility model under-voltage replay drive circuit makes its adhesive when starting to relay starting resistor, and then work under being allowed to condition at lower supply voltage, reduce energy waste, circuit structure is simple, cost is low, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of under-voltage replay drive circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of under-voltage replay drive circuit, comprise resistance R1, double base diode V1, triode V2, relay J, unidirectional controllable silicon S CR and key switch AN1, key switch AN1 one end connects power supply VCC and relay J contact switch J-1 respectively, the key switch AN1 other end connects relay J contact switch J-1 and key switch AN2 respectively, the key switch AN2 other end connects the A pole of relay J contact switch J-2 and unidirectional controllable silicon S CR respectively, the K pole of unidirectional controllable silicon S CR connects relay J coil, the relay J coil other end connects electric capacity C2 and diode D1 positive pole respectively, diode D1 negative pole is connecting triode V2 emitter respectively, resistance R3 and electric capacity C1, the G pole of unidirectional controllable silicon S CR connects electric capacity C3, the electric capacity C3 other end connects diode D2 negative pole, diode D2 positive pole is the contact resistance R3 other end respectively, first base stage of triode V2 base stage and double base diode V1, the second base stage contact resistance R2 of double base diode V1, the resistance R2 other end is contact resistance R1 respectively, resistance R4 and relay J contact J-2, the resistance R4 other end connects the electric capacity C2 other end and triode V2 collector electrode respectively.
Double base diode V1 model is BT33C.
Unidirectional controllable silicon S CR model is TL431.
Operation principle of the present utility model is: refer to Fig. 1, double base diode V1 and resistance R1, resistance R2, resistance R3 and electric capacity C1 form a relaxation formula oscillator, after pressing start button AN1, power on circuitry, because unidirectional controllable silicon S CR triggerless voltage, so not conducting, relay J is failure to actuate, and power supply is charged to rapidly close to supply voltage to electric capacity C2 by resistance R4 and diode D1.Simultaneously, power supply charges to electric capacity C1 through resistance R1, after several seconds, on electric capacity C1, voltage is charged to the trigger voltage of double base diode V1, electric capacity C1 is discharged by double base diode V1 immediately, and resistance R3 forms a positive pulse, and this pulse one tunnel is added to triode V2 base stage, make the rapid saturation conduction of triode V2, triode V2 collector electrode is also that electric capacity C2 positive pole is bordering on ground connection.Owing to now electric capacity C2 being filled with upper just lower negative positive polarity voltage, so electric capacity C2 negative pole is also relay J coil one end is negative potential, another road of positive pulse on resistance R3 is gone to trigger unidirectional controllable silicon S CR conducting through diode D2, electric capacity C3, unidirectional controllable silicon S CR negative electrode is also that the relay J coil other end is close to supply voltage, at this moment, in fact relay J coil bears the supply voltage of about twice, so contact J-1 closes, after unclamping AN1, contact J1-1 self-insurance.Double base diode V1, triode V2 power cut-out by contact J1-2, and relay J is working close under supply voltage, and in figure, AN2 is stop button, presses AN2, and relay J dead electricity discharges, and contact J1-1 disconnects, whole control circuit dead electricity.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a under-voltage replay drive circuit, comprise resistance R1, double base diode V1, triode V2, relay J, unidirectional controllable silicon S CR and key switch AN1, it is characterized in that, described key switch AN1 one end connects power supply VCC and relay J contact switch J-1 respectively, the key switch AN1 other end connects relay J contact switch J-1 and key switch AN2 respectively, the key switch AN2 other end connects the A pole of relay J contact switch J-2 and unidirectional controllable silicon S CR respectively, the K pole of unidirectional controllable silicon S CR connects relay J coil, the relay J coil other end connects electric capacity C2 and diode D1 positive pole respectively, diode D1 negative pole is connecting triode V2 emitter respectively, resistance R3 and electric capacity C1, the G pole of described unidirectional controllable silicon S CR connects electric capacity C3, the electric capacity C3 other end connects diode D2 negative pole, diode D2 positive pole is the contact resistance R3 other end respectively, first base stage of triode V2 base stage and double base diode V1, the second base stage contact resistance R2 of double base diode V1, the resistance R2 other end is contact resistance R1 respectively, resistance R4 and relay J contact J-2, the resistance R4 other end connects the electric capacity C2 other end and triode V2 collector electrode respectively.
2. under-voltage replay drive circuit according to claim 1, is characterized in that, described double base diode V1 model is BT33C.
3. under-voltage replay drive circuit according to claim 1, is characterized in that, described unidirectional controllable silicon S CR model is TL431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276942.2U CN204516685U (en) | 2015-04-30 | 2015-04-30 | A kind of under-voltage replay drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276942.2U CN204516685U (en) | 2015-04-30 | 2015-04-30 | A kind of under-voltage replay drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516685U true CN204516685U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520276942.2U Expired - Fee Related CN204516685U (en) | 2015-04-30 | 2015-04-30 | A kind of under-voltage replay drive circuit |
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| CN (1) | CN204516685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772117A (en) * | 2016-12-01 | 2017-05-31 | 武汉市欧睿科技有限公司 | A kind of integrated testing instrument for transformer |
-
2015
- 2015-04-30 CN CN201520276942.2U patent/CN204516685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772117A (en) * | 2016-12-01 | 2017-05-31 | 武汉市欧睿科技有限公司 | A kind of integrated testing instrument for transformer |
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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: 20150729 Termination date: 20160430 |