CN204422694U - A kind of New single-phase Three-hole socket testing circuit - Google Patents
A kind of New single-phase Three-hole socket testing circuit Download PDFInfo
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- CN204422694U CN204422694U CN201520118082.XU CN201520118082U CN204422694U CN 204422694 U CN204422694 U CN 204422694U CN 201520118082 U CN201520118082 U CN 201520118082U CN 204422694 U CN204422694 U CN 204422694U
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Abstract
The utility model discloses a kind of New single-phase Three-hole socket testing circuit, comprise resistance R1, resistance R2, resistance R3, diode D1, diode D2, diode D3, LED 1, LED 2 and LED 3, the positive pole of described diode D1 connects the negative pole of live wire and LED 3, 2 ends of the negative pole contact resistance R1 of diode D1, the positive pole of the 1 end connecting luminous diode LED1 of described resistance R1, the utility model effectively can detect the wiring condition of single-phase three-hole socket, therefore personnel safety is greatly improved, also ensure that the safety of equipment simultaneously, avoid and occur economic loss.
Description
Technical field
The utility model relates to socket field, specifically a kind of New single-phase Three-hole socket testing circuit.
Background technology
The supply socket that we use is single-phase three-wire socket mostly, and color assignment is: live wire (being also phase line)-L (red or yellow), zero line-N (blue or black), ground wire-E (yellow green).But often can not distinguish by color in the engineering links such as house ornamentation, need actual measurement to determine, and wherein, live wire and zero line are from supply network, live wire generally can detect with test pencil, but ground wire and zero line test pencil cannot distinguish.Protection ground wire is generally local ground connection, and each building has oneself protection ground wire.Zero line and ground wire these two are different concepts, and can not exchange or hybrid junction, the above earth potential of ground wire is zero, are ground connection nearby.The above earth potential of zero line differs and is decided to be zero.Zero line is at nearest substation ground, and the ground connection of this locality may have certain potential difference (PD).Be placed in multimeter and exchange the 250V shelves fire detecting line of shelves and the pressure reduction of zero line, live wire and ground wire, two value differences are reliable ground at below 5V.This pressure reduction general is very little, be difficult to for judge which be ground wire which be zero line; Ground wire is protective wire, can not electric people.Zero line is front, and the above has electric current to flow through, sometimes can electric people.When live wire has electricity, but when equipment does not work, may be that zero line has broken, be all band 220V electricity from the zero line of breakpoint near equipment one end, the same with live wire.
Protection ground wire is generally be connected with the shell of instrument, equipment, household electrical appliance, to prevent electric equipment electric leakage, people is got an electric shock injures and deaths.Because generally have at house lead in electronic box place the residual current circuit breaker be connected in bus; the electric current generally flowing through live wire and zero line should be equal; if but there is leaky in electricity consumption loop; namely electric current is had to be flowed away by ground wire; if leakage current is greater than the residual operating current of earth leakage protective device; earth leakage protective device will trip, and plays a protective role.
Because the current potential of zero line and ground wire is all close to 0V, cannot detects with test pencil, often occur wrong phenomenon.And current single-phase three-hole socket detection on the market cannot judge this situation.The New single-phase Three-hole socket testing circuit that the utility model proposes can address this problem.
Utility model content
The purpose of this utility model is to provide a kind of New single-phase Three-hole socket testing 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 New single-phase Three-hole socket testing circuit, comprise resistance R1, resistance R2, resistance R3, diode D1, diode D2, diode D3, LED 1, LED 2 and LED 3, the positive pole of described diode D1 connects the negative pole of live wire and LED 3, 2 ends of the negative pole contact resistance R1 of diode D1, the positive pole of the 1 end connecting luminous diode LED1 of described resistance R1, the negative pole of described LED 1 connects the negative pole of protection ground wire and LED 2, 2 ends of the positive pole contact resistance R2 of described LED 2, 1 end of described resistance R2 connects the negative pole of diode D2, the positive pole of described diode D2 connects the positive pole of zero line and diode D3, 1 end of the negative pole contact resistance R3 of described diode D3, the positive pole of the 2 end connecting luminous diode LED3 of resistance R3.
As further program of the utility model: the size of described resistance R1 is 100K ohm, the size of resistance R2 is 100K ohm, and the size of resistance R3 is 2K ohm.
As further program of the utility model: the model of described diode D1, diode D2, diode D3 is 1N4007.
As further program of the utility model: described LED 1 model is BT103.
As further program of the utility model: described LED 2 model is BT104.
As further program of the utility model: described LED 3 model is BT301.
Compared with prior art, the beneficial effects of the utility model are: the utility model effectively can detect the wiring condition of single-phase three-hole socket, therefore greatly improves personnel safety, also ensure that the safety of equipment simultaneously, avoids and occur economic loss.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of New single-phase Three-hole socket of the utility model testing 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 New single-phase Three-hole socket testing circuit, comprise resistance R1, resistance R2, resistance R3, diode D1, diode D2, diode D3, LED 1, LED 2 and LED 3, the positive pole of described diode D1 connects the negative pole of live wire and LED 3, 2 ends of the negative pole contact resistance R1 of diode D1, the positive pole of the 1 end connecting luminous diode LED1 of described resistance R1, the negative pole of described LED 1 connects the negative pole of protection ground wire and LED 2, 2 ends of the positive pole contact resistance R2 of described LED 2, 1 end of described resistance R2 connects the negative pole of diode D2, the positive pole of described diode D2 connects the positive pole of zero line and diode D3, 1 end of the negative pole contact resistance R3 of described diode D3, the positive pole of the 2 end connecting luminous diode LED3 of resistance R3.
The size of described resistance R1 is 100K ohm, and the size of resistance R2 is 100K ohm, and the size of resistance R3 is 2K ohm.
The model of described diode D1, diode D2, diode D3 is 1N4007; Described LED 1 model is BT103; Described LED 2 model is BT104; Described LED 3 model is BT301.
Principle of work of the present utility model is: Household electricity leakage protection device select except capacity; the more important thing is this parameter of residual operating current of protector; human body will be caused danger by the electric current of 50mA; therefore; the electric current that 50mA is large is called deadly current, and human body, by 30mA and following electric current, is the danger that people can bear; therefore, the residual operating current of Household electricity leakage protection device must select 30mA and following.Following modified single-phase three-hole socket testing circuit is proposed according to this requirement.Wherein diode D1, D2, D3 plays rectified action, and the effective value of effective value after rectification of 220V just becomes 110V.R1, R2, R3 are current-limiting resistance, and for light emitting diode provides suitable working current, flow through the electric current of LED1 and LED2 greatly about about 1mA, therefore LED1 and LED2 selects common light emitting diode.Flow through the electric current of LED3 greatly about about 50mA, therefore LED3 must select the light emitting diode of relatively high power.If ground wire and zero line connect instead like this; the moment that LED3 lights; earth leakage protective device will action; cut off the electricity supply, LED3 goes out, and this circuit is whether utilize light emitting diode to carry out indication single-phase three-plug connector normal simultaneously; its work-based logic is as follows: (1) is if lack live wire or live wire has broken; then LED1 goes out, and LED2 goes out, and LED3 goes out.
(2) if lack zero line or zero line has broken, then LED1 is bright, and LED2 goes out, and LED3 goes out.
(3) if lack ground wire or ground wire has broken, then LED1 goes out, and LED2 goes out, and LED3 is bright.
(4) if live wire and zero line have connect instead, then LED1 goes out, and LED2 is bright, and LED3 is bright.
(5) if live wire and ground wire have connect instead, then LED1 is bright, and LED2 is bright, and LED3 goes out.
(6) if normal wiring, then LED1 is bright, and LED2 goes out, and LED3 is bright.
(7) if lack zero and phase zero is wrong, then LED1 is bright, and LED2 is bright, and LED3 goes out.
(8) if lack ground and phase ground mistake, then LED1 is bright, and LED2 is bright, and LED3 goes out.
(9) if ground wire and zero line have connect instead, then moment of lighting of LED3, earth leakage protective device is cut off the electricity supply, and LED3 goes out.
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 instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. a New single-phase Three-hole socket testing circuit, comprise resistance R1, resistance R2, resistance R3, diode D1, diode D2, diode D3, LED 1, LED 2 and LED 3, it is characterized in that, the positive pole of described diode D1 connects the negative pole of live wire and LED 3, 2 ends of the negative pole contact resistance R1 of diode D1, the positive pole of the 1 end connecting luminous diode LED1 of described resistance R1, the negative pole of described LED 1 connects the negative pole of protection ground wire and LED 2, 2 ends of the positive pole contact resistance R2 of described LED 2, 1 end of described resistance R2 connects the negative pole of diode D2, the positive pole of described diode D2 connects the positive pole of zero line and diode D3, 1 end of the negative pole contact resistance R3 of described diode D3, the positive pole of the 2 end connecting luminous diode LED3 of resistance R3.
2. New single-phase Three-hole socket testing circuit according to claim 1, is characterized in that, the size of described resistance R1 is 100K ohm, and the size of resistance R2 is 100K ohm, and the size of resistance R3 is 2K ohm.
3. New single-phase Three-hole socket testing circuit according to claim 1, is characterized in that, the model of described diode D1, diode D2, diode D3 is 1N4007.
4. New single-phase Three-hole socket testing circuit according to claim 1, is characterized in that, described LED 1 model is BT103.
5. New single-phase Three-hole socket testing circuit according to claim 1, is characterized in that, described LED 2 model is BT104.
6. New single-phase Three-hole socket testing circuit according to claim 1, is characterized in that, described LED 3 model is BT301.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118082.XU CN204422694U (en) | 2015-02-17 | 2015-02-17 | A kind of New single-phase Three-hole socket testing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118082.XU CN204422694U (en) | 2015-02-17 | 2015-02-17 | A kind of New single-phase Three-hole socket testing circuit |
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| Publication Number | Publication Date |
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| CN204422694U true CN204422694U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520118082.XU Expired - Fee Related CN204422694U (en) | 2015-02-17 | 2015-02-17 | A kind of New single-phase Three-hole socket testing circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124918A (en) * | 2016-06-14 | 2016-11-16 | 北京百度网讯科技有限公司 | Direct current Three-hole socket detection device and detection method |
| CN106877286A (en) * | 2017-03-28 | 2017-06-20 | 广东万家乐燃气具有限公司 | Power line is protected in a kind of leakage of charged Check up polarity |
| CN108919039A (en) * | 2018-05-16 | 2018-11-30 | 广东工业大学 | A kind of three-pin plug, Three-hole socket detection device, method, system and equipment |
| CN109541367A (en) * | 2018-11-06 | 2019-03-29 | 广州市轻工高级技工学校 | A kind of socket secure specification diagnostic device |
| CN111580019A (en) * | 2020-06-24 | 2020-08-25 | 优利德科技(中国)股份有限公司 | Method, device and system for detecting abnormity of ground wire zero line and readable storage medium |
| CN112666501A (en) * | 2020-12-31 | 2021-04-16 | 惠州市福仪电子科技有限公司 | Socket tester and using method thereof |
| CN113866523A (en) * | 2020-06-30 | 2021-12-31 | 芜湖美的厨卫电器制造有限公司 | Electrical phase detection device and method for household appliance and household appliance |
-
2015
- 2015-02-17 CN CN201520118082.XU patent/CN204422694U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124918A (en) * | 2016-06-14 | 2016-11-16 | 北京百度网讯科技有限公司 | Direct current Three-hole socket detection device and detection method |
| CN106877286A (en) * | 2017-03-28 | 2017-06-20 | 广东万家乐燃气具有限公司 | Power line is protected in a kind of leakage of charged Check up polarity |
| CN108919039A (en) * | 2018-05-16 | 2018-11-30 | 广东工业大学 | A kind of three-pin plug, Three-hole socket detection device, method, system and equipment |
| CN109541367A (en) * | 2018-11-06 | 2019-03-29 | 广州市轻工高级技工学校 | A kind of socket secure specification diagnostic device |
| CN111580019A (en) * | 2020-06-24 | 2020-08-25 | 优利德科技(中国)股份有限公司 | Method, device and system for detecting abnormity of ground wire zero line and readable storage medium |
| CN113866523A (en) * | 2020-06-30 | 2021-12-31 | 芜湖美的厨卫电器制造有限公司 | Electrical phase detection device and method for household appliance and household appliance |
| CN112666501A (en) * | 2020-12-31 | 2021-04-16 | 惠州市福仪电子科技有限公司 | Socket tester and using method thereof |
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| 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: 20150624 Termination date: 20170217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |