CN203117338U - Working status indicating module - Google Patents
Working status indicating module Download PDFInfo
- Publication number
- CN203117338U CN203117338U CN 201220722604 CN201220722604U CN203117338U CN 203117338 U CN203117338 U CN 203117338U CN 201220722604 CN201220722604 CN 201220722604 CN 201220722604 U CN201220722604 U CN 201220722604U CN 203117338 U CN203117338 U CN 203117338U
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- Prior art keywords
- light emitting
- emitting diode
- line
- diode
- light
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Abstract
The utility model provides a working status indicating module including a first crystal diode D1, a first current limiting resistor R1 and a first light emitting diode G together connected to an L line; and a second crystal diode D2, a second current limiting resistor R2 and a second light emitting diode Y together connected to an N line. A junction of the first light emitting diode G and the second light emitting diode Y is connected to a ground line E through a TVS (Transient Voltage Suppressor). The working voltage value of the TVS arranged on the ground line E can be adjusted according to requirements. When the wire connection of a working status indicator of a power source lightning protection device is normal, the first light emitting diode G gives out light normally while the second light emitting diode Y does not give out light. And when a zero line and a live line (L line and N line) are in reverse connection, the first light emitting diode G does not give out light while the second light emitting diode Y gives out light. And when the ground line is not in connection or voltage of the zero line and the ground line surpasses puncture voltage of the TVS, the first light emitting diode G and the second light emitting diode Y give out light at the same time, so that an alarm effect is realized.
Description
Technical field
The utility model relates to electronic applications, particularly, and particularly duty indicating module.
Background technology
In the prior art; equipment often can be used the operation that mode indicator is warned work; indicator commonly used has only the whether correct caution of zero line and live wire connection; if zero line and live wire have been received corresponding position; be exactly that a lamp is bright; if the position connection of zero line and live wire is opposite, is exactly that another lamp is bright.Zero line and ground wire all are that the maintenance current potential is zero line, generally can there be voltage difference between the two, but because the influence of environment or other factors, have certain voltage difference, and there is certain difference in voltage difference, have certain potential safety hazard, and whether the ground connection of some equipment there is close relationship with its operate as normal.Therefore, be necessary to propose a kind of indicator that zero live wire connects instead, whether ground connection reaches zero ground voltage permission difference caution that has.
The utility model content
Technical problem to be solved in the utility model is to provide the indicating module of the duty with warning function.
Provide the duty indicating module at the utility model, comprised the first crystal diode D1, the first current-limiting resistance R1, the first light emitting diode G that are connected on the L line; Be connected the second crystal diode D2, the second current-limiting resistance R2, the second light emitting diode Y on the N line; The node of the first light emitting diode G and the second light emitting diode Y is connected on the ground wire E by transient state diode TVS.
Further, the described first light emitting diode G is green light.
Further, the described second light emitting diode Y is amber light.
The duty indicating module that provides according to the utility model, owing to be respectively arranged with first light emitting diode and second light emitting diode at L line and N line, and the E line is provided with transient state diode TVS, make when the normal wiring of power module, its first light emitting diode normally sends green glow, second light emitting diode is not luminous, and as zero live wire (L, the N line) during reversal connection, then be that first light emitting diode is not luminous and second light emitting diode sends gold-tinted, and when do not have connecting ground wire or the voltage of zero line and ground wire when surpassing the voltage breakdown of transient state diode TVS, first light emitting diode and second light emitting diode can be bright together, play warning function.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not constitute improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the duty indicating module that the utility model embodiment provides.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Referring to Fig. 1, the utility model embodiment provides the duty indicating module, comprise the first crystal diode D1, the second crystal diode D2, the first current-limiting resistance R1, the second current-limiting resistance R2, the first light emitting diode G(is green), the second light emitting diode Y(Huang), also comprise transient state diode TVS.The first crystal diode D1, the first current-limiting resistance R1, the first light emitting diode G are connected on the L line, the second crystal diode D2, the second current-limiting resistance R2, the second light emitting diode Y are connected on the N line, and the common ground of G and Y light emitting diode is connected on the E line by transient state diode TVS.Wherein, the first light emitting diode G represents green light, and the second light emitting diode Y represents amber light.
If be connected under the situation about imitate connecting, the connection of zero line and live wire is correct, green glow is sent in the first light emitting diode G conducting; If the connection of zero line and live wire is opposite, gold-tinted is sent in the second light emitting diode Y conducting;
If the connection of zero line and live wire is correct, ground wire do not have connect or Zero-liue between voltage difference surpass transient state diode breakdown voltage value, this moment, the first light emitting diode G and the second light emitting diode Y can be bright together, played the effect of caution.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. the duty indicating module is characterized in that, comprises the first crystal diode D1, the first current-limiting resistance R1, the first light emitting diode G that are connected on the L line; Be connected the second crystal diode D2, the second current-limiting resistance R2, the second light emitting diode Y on the N line; The node of the first light emitting diode G and the second light emitting diode Y is connected on the ground wire E by transient state diode TVS.
2. duty indicating module as claimed in claim 1 is characterized in that, the described first light emitting diode G is green light.
3. duty indicating module as claimed in claim 1 or 2 is characterized in that, the described second light emitting diode Y is amber light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722604 CN203117338U (en) | 2012-12-25 | 2012-12-25 | Working status indicating module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722604 CN203117338U (en) | 2012-12-25 | 2012-12-25 | Working status indicating module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117338U true CN203117338U (en) | 2013-08-07 |
Family
ID=48897673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220722604 Expired - Fee Related CN203117338U (en) | 2012-12-25 | 2012-12-25 | Working status indicating module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203117338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771825A (en) * | 2017-02-17 | 2017-05-31 | 广东立信防雷科技有限公司 | The on off test device and its method of testing of a kind of TN system earths line |
-
2012
- 2012-12-25 CN CN 201220722604 patent/CN203117338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771825A (en) * | 2017-02-17 | 2017-05-31 | 广东立信防雷科技有限公司 | The on off test device and its method of testing of a kind of TN system earths line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20131225 |