CN205280860U - Unusual indicating circuit of ground connection - Google Patents
Unusual indicating circuit of ground connection Download PDFInfo
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- CN205280860U CN205280860U CN201520970333.7U CN201520970333U CN205280860U CN 205280860 U CN205280860 U CN 205280860U CN 201520970333 U CN201520970333 U CN 201520970333U CN 205280860 U CN205280860 U CN 205280860U
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- electric capacity
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- zero line
- diode
- ground connection
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Abstract
The utility model discloses an unusual indicating circuit of ground connection, including ground line terminal, zero line end and live wire end, establish ties between live wire end and zero line end first electric capacity and second electric capacity, wherein, the public connectin end and the ground line terminal of first electric capacity and second electric capacity are connected, be equipped with electrification of ground wire indicating module between ground line terminal and the zero line end, electrification of ground wire indicating module includes luminotron, diode and third electric capacity, it has the stabilivolt still to establish ties between third electric capacity and the cathode of the diode. When the ground wire is unusual, play the warning effect through the luminotron. The utility model discloses circuit simple and practical, the range of application is wide, and when the no ground connection of power input end, this indicating circuit will light the no ground connection of warning in order to show safe warning, connect inverse time when input L -N polarity, this indicating circuit will light to the not meet the standard wiring of warning power input polarity.
Description
Technical field
The utility model relates to electric safety technique field, indicates circuit in particular to a kind of ground connection is abnormal.
Background technology
Prior art lacks the circuit structure to the abnormal instruction of ground connection, and therefore, user cannot determine the power input in whole circuit loop, and whether ground connection is normal, and prior art lacks the cautionary measure to ground connection exception.
Practical novel content
(1) technical problem solved
The purpose of this utility model to be overcome above-mentioned shortcoming exactly, it is intended to provides a kind of ground connection extremely to indicate circuit.
(2) technical scheme
For achieving the above object, ground connection of the present utility model is abnormal indicates circuit, comprises ground terminal, zero line side and live wire end, connect between live wire end and zero line side the first electric capacity and the 2nd electric capacity; Wherein, the public coupling end of described first electric capacity and the 2nd electric capacity is connected with ground terminal.
Ground wire electrification indicating module it is provided with between ground terminal and zero line side.
Described ground wire electrification indicating module comprises luminotron, diode and the 3rd electric capacity; One end of shown luminotron cathode connecting diode negative pole and the 3rd electric capacity, the negative pole of shown luminotron and the positive pole of diode all connect zero line side.
Described 3rd is also in series with voltage stabilizing tube between electric capacity and diode cathode.
(3) useful effect
Compared with prior art, the technical solution of the utility model has the following advantages: the utility model circuit is simple and practical, applied range, and when power input is no ground, it is no ground to show safety prompt function that this instruction circuit will light warning; When input terminus L-N reverse polarity connection, this instruction circuit will be lighted, and not meet standard wiring to warn power supply input polarity.
Accompanying drawing explanation
Fig. 1 is the module map of ground connection of the present utility model abnormal instruction circuit;
Fig. 2 is the electrical block diagram of the utility model embodiment one;
Fig. 3 is the electrical block diagram of the utility model embodiment two.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail. Following examples are for illustration of the utility model, but are not used for limiting scope of the present utility model.
Embodiment one
As shown in Figure 1, ground connection of the present utility model is abnormal indicates circuit, comprises ground terminal E, zero line side N and live wire end L, and connect the first electric capacity C1 and the 2nd electric capacity C2 between live wire end L and zero line side N; Wherein, the public coupling end of described first electric capacity C1 and the 2nd electric capacity C2 is connected with ground terminal E.
Ground wire electrification indicating module it is provided with between ground terminal E and zero line side N.
As shown in Figure 2, described ground wire electrification indicating module comprises luminotron LED, diode D1 and the 3rd electric capacity C3; One end of shown luminotron LED cathode connecting diode D1 negative pole and the 3rd electric capacity C3, the negative pole of shown luminotron LED and the positive pole of diode D1 all connect zero line side N.
Embodiment two
As shown in Figure 3, between above-mentioned 3rd electric capacity C3 and diode D1 negative pole, also it is in series with voltage stabilizing tube DW, makes the voltage at luminotron LED two ends more stable.
Principle of work of the present utility model
When input terminus is no ground, L and N and meet the first electric capacity C1, the public end output voltage of the 2nd electric capacity C2 be 1/2 voltage of supply, this voltage flows through ground wire electrification indicating module through ground terminal E and zero line side N forms loop (electric current path as illustrated by the arrows in fig. 1), luminotron LED is lighted, is used to indicate ground wire abnormal;
When input terminus has ground connection, live wire end L and zero line side N and connect the first electric capacity C1, the 2nd electric capacity C2 public end output voltage force to flow to ground terminal E to low potential, between E-N under voltage to drive ground wire electrification indicating module light, represent ground wire normal ground.
The utility model circuit is simple and practical, applied range, and when power input is no ground, it is no ground to show safety prompt function that this instruction circuit will light warning; When input terminus L-N reverse polarity connection, this instruction circuit will be lighted, and not meet standard wiring to warn power supply input polarity.
In sum, above-mentioned enforcement mode is not restricted enforcement mode of the present utility model, the modification that the technician of all this areas carries out on the basis of flesh and blood of the present utility model or equivalent deformation, all at technology category of the present utility model.
Claims (1)
1. ground connection is abnormal indicates a circuit, comprises ground terminal, zero line side and live wire end, it is characterised in that: connect between live wire end and zero line side the first electric capacity and the 2nd electric capacity; Wherein, the public coupling end of described first electric capacity and the 2nd electric capacity is connected with ground terminal;
Ground wire electrification indicating module it is provided with between ground terminal and zero line side;
Described ground wire electrification indicating module comprises luminotron, diode and the 3rd electric capacity; One end of shown luminotron cathode connecting diode negative pole and the 3rd electric capacity, the negative pole of shown luminotron and the positive pole of diode all connect zero line side;
Described 3rd is also in series with voltage stabilizing tube between electric capacity and diode cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970333.7U CN205280860U (en) | 2015-11-30 | 2015-11-30 | Unusual indicating circuit of ground connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970333.7U CN205280860U (en) | 2015-11-30 | 2015-11-30 | Unusual indicating circuit of ground connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205280860U true CN205280860U (en) | 2016-06-01 |
Family
ID=56065424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520970333.7U Active CN205280860U (en) | 2015-11-30 | 2015-11-30 | Unusual indicating circuit of ground connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205280860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147538A (en) * | 2020-09-27 | 2020-12-29 | 中国长城科技集团股份有限公司 | Equipment poor grounding alarm circuit, poor grounding alarm device and switch device |
-
2015
- 2015-11-30 CN CN201520970333.7U patent/CN205280860U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147538A (en) * | 2020-09-27 | 2020-12-29 | 中国长城科技集团股份有限公司 | Equipment poor grounding alarm circuit, poor grounding alarm device and switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |