CN203760386U - High security on-off control circuit - Google Patents
High security on-off control circuit Download PDFInfo
- Publication number
- CN203760386U CN203760386U CN201320751381.8U CN201320751381U CN203760386U CN 203760386 U CN203760386 U CN 203760386U CN 201320751381 U CN201320751381 U CN 201320751381U CN 203760386 U CN203760386 U CN 203760386U
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- CN
- China
- Prior art keywords
- relay
- contact
- switch
- terminal
- coil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010304 firing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000004821 Contact adhesive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Relay Circuits (AREA)
Abstract
The utility model discloses a high security on-off control circuit, comprising a first switch, a first relay, an AC input port, a first relay contact and a coil. The a terminal of the first switch is connected to the e terminal of the first relay contact and is connected to a firing line of an AC input port; the b terminal of the first switch is connected to the contact g of the first relay and the d terminal of the coil; the c terminal of the first relay is connected to the null line of the AC input port; the c terminal and the d terminal of the first relay are two terminals of the relay coil; and the e terminal is a public contact, the f terminal is a normally closed public contact and the g terminal is a normally opened contact. The high security on-off control circuit can control and protect the switch because the electric equipment cannot work again after the power off caused by various device faults during the operation. Even when the power supply is restored and people are absent, the electric equipment cannot work again.
Description
Technical field
The utility model relates to the new functional area technology of a kind of high security ON-OFF control circuit, particularly a kind of high security control circuit being used in conjunction with by switch and relay.
Background technology
Present most of power consumption equipment is being electrified, and presses switch and starts working afterwards.If have a power failure suddenly at work, or cause power-off by other reason, equipment is by interruption of work.But its control switch is the state in opening also, once incoming call, equipment will be resumed work automatically.If at this moment equipment side nobody keeps an eye on, will cause waste electric resources, or may cause dangerous, unnecessary other loss.This control circuit utilizes the cooperation of disposable touch switch and relay, has solved this unsafe hidden danger, has simple and easy, safety and the high feature of reliability.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of ON-OFF control circuit of high security, has simple and easy, safe control function.When power consumption equipment is in working order because of the unexpected power-off of various faults, cause after circuit interruption of work, even if recover normal power supply, the in the situation that of unmanned on equipment side, power consumption equipment cannot be resumed work automatically.
In order to realize the object solving the problems of the technologies described above, the utility model has adopted following technical scheme:
A kind of high security ON-OFF control circuit of the present utility model, comprises contact and the coil of the first switch, the first relay, ac input end mouth and the first relay;
After wherein a of the first switch end is connected with the contact e of the first relay, then be connected with ac input end mouth live wire; The b end of the first switch is connected with the contact g of the first relay and the d of coil end; The c end of the first relay is connected with ac input end mouth zero line N.
Further concrete, a end of the first switch, b hold respectively: a end is a contact of switch, and b end is another contact of switch.
Further concrete, the c end of the first relay, d end, e end, f end, g end are respectively: c end is one end of relay coil, and d end is the other end of relay coil, and e end is the common of relay, f end is the normally-closed contact of relay, and g end is the normally opened contact of relay.
Further concrete, the first switch is touch switch; The first relay is electromagnetic relay.
Between ac input end mouth L and N, connect alternating voltage, for example 220VAC alternating voltage, the first relay is in normally off in idle situation, and contact e and contact f are conductings.Click artificially the first switch, after the contact a of the first switch and contact b conducting, automatically disconnect, the moment of conducting makes the first relay contact adhesive, i.e. the contact e of the first relay and contact g conducting, the coil two ends c of the first relay and also conducting of d, circuit entry into service.If power-off suddenly, contact e and the contact g of the first relay will disconnect, and the first relay becomes idle normally off, circuit interruption of work.After re-powering, if do not remove artificially to click the first switch, the first relay, just always in off position, has played like this one and has controlled protective effect.
By adopting technique scheme, the utlity model has following beneficial effect:
The utility model is when power consumption equipment is in working order because of the unexpected power-off of various faults; cause after circuit interruption of work, even if recover normal power supply, the in the situation that of unmanned on equipment side; power consumption equipment cannot be resumed work automatically, has played switch control protective effect.
Brief description of the drawings
Fig. 1 is the high security ON-OFF control circuit schematic diagram that switch of the present utility model and relay are used in conjunction with.
In figure, 1-the first switch, 2-the first relay, the live wire of L-ac input end mouth, the zero line of N-ac input end mouth.
Embodiment
Below in conjunction with accompanying drawing, this patent is further explained.But the protection range of this patent is not limited to concrete execution mode.
Embodiment 1
The circuit of this patent comprises the first switch 1, the first relay 2 and ac input end mouth L, N.The c end of the first relay is one end of relay coil, and d end is the other end of relay coil, and e end is the common of relay, and f end is the normally-closed contact of relay, and g end is the normally opened contact of relay.After wherein a of the first switch 1 end is connected with the contact e of the first relay 2, then be connected with ac input end mouth live wire L; The b end of the first switch 1 is connected with the contact g of the first relay 2 and the d of coil end; The c end of the first relay 2 is connected with ac input end mouth zero line N.
Between ac input end mouth L and N, connect 220VAC alternating voltage, the first relay 2 is in normally off in idle situation, and contact e and contact f are conductings.Click artificially the first switch 1, after the contact a of the first switch 1 and contact b conducting, automatically disconnect, the moment of conducting makes the first relay 2 contact adhesives, i.e. the contact e of the first relay 2 and contact g conducting, the coil two ends c of the first relay 2 and also conducting of d, circuit entry into service.If power-off suddenly, contact e and the contact g of the first relay 2 will disconnect, and the first relay 2 becomes idle normally off, circuit interruption of work.After re-powering, if do not remove artificially to click the first switch 1, the first relay 2 just always in off position, play like this one and controlled protective effect.
This circuit walk away safety, reliability is high, and the control protection design circuit in power consumption equipment is had a wide range of applications.
Claims (3)
1. an ON-OFF control circuit for high security, is characterized in that: the contact and the coil that comprise the first switch (1), the first relay (2), ac input end mouth and the first relay (2);
After wherein a of the first switch (1) end is connected with the contact e of the first relay (2), then be connected with ac input end mouth live wire (L); The b end of the first switch (1) is connected with the contact g of the first relay (2) and the d of coil end; The c end of the first relay (2) is connected with ac input end mouth zero line (N);
The a end of the first switch (1) is a contact of switch, and b end is another contact of switch;
The c end of the first relay (2), d end, e end, f end, g end are respectively: c end is one end of relay coil, d end is the other end of relay coil, e end is the common of relay, and f end is the normally-closed contact of relay, and g end is the normally opened contact of relay.
2. the ON-OFF control circuit of high security according to claim 1, is characterized in that: described the first switch (1) is touch switch.
3. the ON-OFF control circuit of high security according to claim 1, is characterized in that: described the first relay (2) is electromagnetic relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751381.8U CN203760386U (en) | 2013-11-26 | 2013-11-26 | High security on-off control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751381.8U CN203760386U (en) | 2013-11-26 | 2013-11-26 | High security on-off control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203760386U true CN203760386U (en) | 2014-08-06 |
Family
ID=51255631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320751381.8U Expired - Fee Related CN203760386U (en) | 2013-11-26 | 2013-11-26 | High security on-off control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203760386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371712A (en) * | 2015-12-11 | 2016-03-02 | 王光树 | Trigger device for ammunition |
| CN107104023A (en) * | 2017-06-01 | 2017-08-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Electromagnetic relay high level self-locking control circuit |
-
2013
- 2013-11-26 CN CN201320751381.8U patent/CN203760386U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371712A (en) * | 2015-12-11 | 2016-03-02 | 王光树 | Trigger device for ammunition |
| CN107104023A (en) * | 2017-06-01 | 2017-08-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Electromagnetic relay high level self-locking control circuit |
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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: 20140806 |