CN203535153U - PE detection device - Google Patents
PE detection device Download PDFInfo
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- CN203535153U CN203535153U CN201320591370.8U CN201320591370U CN203535153U CN 203535153 U CN203535153 U CN 203535153U CN 201320591370 U CN201320591370 U CN 201320591370U CN 203535153 U CN203535153 U CN 203535153U
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- diode
- triode
- pin
- light emitting
- optical coupler
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Abstract
The utility model discloses a PE detection device which is composed of an electronic circuit. The electronic circuit is formed in a manner that: an alternating-current live wire L terminal is connected with a diode D2 and a resistor R1 in series, and then connected to a front pin 1 and a rear pin 3 of an optical coupler U1, the collector of a triode Q1, and a diode D3; a front pin 2 of the optical coupler U1 is connected with a ground line PE, and a rear pin 4 of the optical coupler U1 is connected to the base of the triode Q1; the emitter of the triode Q1 is connected to an intermediate connection terminal of a light emitting diode D1 and a resistor R2, and the other end of the resistor R2 is connected with an alternating-current zero wire N terminal; and the diode D3 is connected with a diode D4 and the light emitting diode D1 in series. According to the utility model, the optical coupler is used as a PE detection component, and controls the conduction of the triode so as to achieve the PE state indication function by cooperating with the diodes and light emitting diodes. The PE detection device has the advantages of practicability, reliability, simplicity in structure, small influence on interference signals and induction electricity, and accuracy in indication.
Description
Technical field
The utility model belongs to electronic technology field, especially relates to a kind of being convenient to, on the products such as insert row, the reliability of PE circuit is detected to the PE pick-up unit of indicating with state.
Background technology
Along with the gradually strengthening of people to Electrical Safety consciousness, as the end prod of electric power supply, insert row is also added into lightning protection, PE ground connection, polarity deixis more and more at present.
Most insert row is only with relay indicating light, when socket live wire, zero line reversal connection or equipment ground wire access even equipment ground wire electrification, insert row does not still show normal operating conditions, although do not affect the normal work of equipment, but may cause device housings charged, the person is threatened and has fire.
Summary of the invention
The purpose of this utility model provide with improving the deficiency of prior art a kind of by optocoupler as PE detection means, by optocoupler control the conducting collocation diode of triode and state-indicating function that light emitting diode plays PE, practical reliable, simple in structure, less on undesired signal and induced electricity impact, indicate PE pick-up unit accurately.
The purpose of this utility model is to realize like this, a kind of PE pick-up unit, by electronic circuit, formed, be characterized in that described electronic circuit is the live wire L end series diode D2 of alternating current, rear front end 1 pin that meets respectively optocoupler U1 of resistance R 1, rear end 3 pin, the collector of triode Q1 and diode D3, the front end 2 pin ground wire PE of optocoupler U1, rear end 4 pin connect the base stage of triode Q1, the emitter sending and receiving optical diode D1 of triode Q1, the intermediate contact end of resistance R 2, the zero line N end of resistance R 2 another termination alternating currents, diode D3 series diode D4, light emitting diode D1.
Compared with the prior art the utility model has following distinguishing feature and good effect: the utility model adopts the live wire L end series diode D2 of alternating current, rear front end 1 pin that meets respectively optocoupler U1 of resistance R 1, rear end 3 pin, the collector of triode Q1 and diode D3, the front end 2 pin ground wire PE of optocoupler U1, rear end 4 pin connect the base stage of triode Q1, the emitter sending and receiving optical diode D1 of triode Q1, the intermediate contact end of resistance R 2, the zero line N end of resistance R 2 another termination alternating currents, diode D3 series diode D4, light emitting diode D1, the prime of optocoupler U1 connects alternating current fire wire L end and ground wire PE end, the pressure reduction of the L of usining end and PE end is as detection signal, at PE end, do not connect, misconnection or can change the state indication of PE during with the short circuit of live wire overlap joint, play warning function, reminding user correction circuit is with protection equipment and personal safety in time, this circuit is practical reliable, simple in structure, less on undesired signal and induced electricity impact, indication accurately.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is a kind of electronic circuit schematic diagram of utility model.
Embodiment
Embodiment, a kind of PE pick-up unit, with reference to Fig. 1, by electronic circuit, formed, described electronic circuit is the live wire L end series diode D2 of alternating current, rear front end 1 pin that meets respectively optocoupler U1 of resistance R 1, rear end 3 pin, the collector of triode Q1 and diode D3, the front end 2 pin ground wire PE of optocoupler U1, rear end 4 pin connect the base stage of triode Q1, the emitter sending and receiving optical diode D1 of triode Q1, the intermediate contact end of resistance R 2, the zero line N end of resistance R 2 another termination alternating currents, diode D3 series diode D4, this forms a kind of structure of the present utility model light emitting diode D1.
1,2 pins of optocoupler U1 of the present utility model connect respectively alternating current L end, PE end, the L end of normal wiring and the voltage official post optocoupler U1 prime conducting between PE end, open optocoupler U1 rear class, L end is being opened triode Q1 with the pressure reduction of N end after diode D2, between L end and N end, by triode Q1 conducting, form loop, the about 1.4V of its Vce of triode Q1 after conducting, and triode Q1 is in parallel with diode D3, D4 and light emitting diode D1, now the voltage of diode D1 is less than 0.7V, diode D1 cannot conducting, and pilot lamp extinguishes; And when PE holds not connection or misconnection, due to L end hold with PE between without pressure drop, so not conducting of optocoupler U1 rear class, triode Q1 also will end, between L end and N end, can only form loop, the normal bright alarm of diode D1 pilot lamp by diode D3, D4 and light emitting diode D1.
Claims (1)
1. a PE pick-up unit, by electronic circuit, formed, it is characterized in that described electronic circuit is collector and the diode D3 of rear front end 1 pin that meets respectively optocoupler U1 of live wire L end series diode D2, the resistance R 1 of alternating current, rear end 3 pin, triode Q1, the base stage that the front end 2 pin ground wire PE of optocoupler U1, rear end 4 pin meet triode Q1, the emitter sending and receiving optical diode D1 of triode Q1, the intermediate contact end of resistance R 2, the zero line N end of resistance R 2 another termination alternating currents, diode D3 series diode D4, light emitting diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591370.8U CN203535153U (en) | 2013-09-25 | 2013-09-25 | PE detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591370.8U CN203535153U (en) | 2013-09-25 | 2013-09-25 | PE detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203535153U true CN203535153U (en) | 2014-04-09 |
Family
ID=50421347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320591370.8U Expired - Lifetime CN203535153U (en) | 2013-09-25 | 2013-09-25 | PE detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203535153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898015A (en) * | 2015-06-27 | 2015-09-09 | 佛山市顺德万和电气配件有限公司 | Alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit |
| CN114217245A (en) * | 2021-12-23 | 2022-03-22 | 广东电网有限责任公司江门供电局 | System for quickly checking user-to-user interaction of newly-built wiring |
-
2013
- 2013-09-25 CN CN201320591370.8U patent/CN203535153U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898015A (en) * | 2015-06-27 | 2015-09-09 | 佛山市顺德万和电气配件有限公司 | Alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit |
| CN114217245A (en) * | 2021-12-23 | 2022-03-22 | 广东电网有限责任公司江门供电局 | System for quickly checking user-to-user interaction of newly-built wiring |
| CN114217245B (en) * | 2021-12-23 | 2023-08-04 | 广东电网有限责任公司江门供电局 | System for checking household serial number by uniformly building new assembly line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |