CN85203769U - Electronic voltage-detecting unit - Google Patents
Electronic voltage-detecting unit Download PDFInfo
- Publication number
- CN85203769U CN85203769U CN 85203769 CN85203769U CN85203769U CN 85203769 U CN85203769 U CN 85203769U CN 85203769 CN85203769 CN 85203769 CN 85203769 U CN85203769 U CN 85203769U CN 85203769 U CN85203769 U CN 85203769U
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- China
- Prior art keywords
- emitting diode
- light
- contact
- utility
- model
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Abstract
The utility model relates to an electronic voltage-detecting unit. In the case of having electricity and from the outside of an insulating coat, the utility model can judge a fire wire, a zero line and the disconnecting position of the fire wire and can judge whether the zero line is broken; in the case of having no electricity, the electronic voltage-detecting unit can test whether a lead wire is disconnected. The utility model is suitable for testing the voltage of alternating current-direct current power supply within 50 Volt to 550 Volt. The utility model is composed of a signal reception circuit which is composed of a testing contact head and a hand contacting pole and an electric connection which is composed of a circuit board, a triode transistor, a light-emitting diode and batteries and is formed according to the principle of a signal amplification display circuit. When testing, the contact head need to contact with the surface of the insulation layer of a lead wire, when the light-emitting diode is light, the guide wire is closed; when the light-emitting diode is not light, the guide wire is open.
Description
The invention belongs to a kind of multi-functional electrical testing tools of using, particularly a kind of have under the electric situation at lead just can distinguish live wire, zero line and live wire across insulation course and what position to disconnect zero line at and whether open circuit, and lead is not when having electricity, and that checks whether circuit disconnect is suitable for testing power of alterating and direct current voltage in the 50V-550V with electrical testing tools.
The test pencil of cash and carry sales mainly contains test contact on the market, and metal spring, current-limiting resistance, neon tube and hand touched electrode are composed in series.When test contact contacts with tested metallic object, whether when staff contacts with the hand touched electrode, it is charged to measure metallic object, and when there was high voltage in metallic object with respect to the earth, the neon tube starter in the test pencil indicated tested metallic object charged.This kind test pencil exists some problems in actual applications, as the luminance brightness of neon tube starter, by day or light when strong, is difficult for observing charged situation.Be easy to make zero during the direct engaged test of electricity measurer and electric conductor, live wire causes short circuit by electricity measurer, causes danger.And in commercial production and in many household electrical appliance, ubiquity the power lead that can judge connection to be had? the phenomenon that opens circuit in cable, the lead, right judgement be found out and be made to these phenomenons can't under cold situation, point out the position of opening circuit; In case after the energising, be present in opening circuit in a certain lead again, cause some components and parts to be burnt, this often causes difficulty and brings wrong judgement to the telecommunication millwright on the production line, debugging worker, also is one for the consumers of household electrical appliance and expects in the problem that solves.
Task of the present invention is that a kind of improved multi-functional electrical testing tools of using will be provided.This electricity measurer needn't directly contact with electric conductor, only need just can measure the common electrical lamp driver across insulation course, commercial power circuit and the charged situation of india-rubber cable circuit, when electricity, just can distinguish out live wire, zero line at the insulation epidermis, be that the live wire light emitting diode is bright, zero line light emitting diode do not work (or little bright).And can outside insulation course, measure live wire a part and whether open circuit, promptly the contact position does not work there, and open circuit in the position thus in other words; When whether the survey zero line opens circuit, will measure live wire earlier, survey the metal part of zero line then with contact, light emitting diode does not work when opening circuit, and light emitting diode is just bright when not opening circuit.Simultaneously, when not having electricity, can play whether logical, the disconnected effect of universal electric meter measuring circuit, can from more circuit, find out the two ends of certain root line.Also can utilize test contact to take over a protective position, the loop signal that hand touched electrode ground connection forms is made burglar alarm as the start signal of certain action.Logical and its insulation degree of inspection of working line that also can be used for simultaneously, test motor.
The mode that task of the present invention is finished is as follows: an end in contact of electricity measurer contact is on a wiring board, two amplifier tubes are fixed and be welded with to this plate, a switching tube (three pipes are the 3DGPNP pipe) and a light emitting diode (LED), the other end contact of wiring board is at the negative pole of 1.5v battery, because of the DC voltage of two batteries is 3v, cause 2-3 that the luminance brightness of light emitting diode starter surpasses former electricity measurer neon tube luminance brightness doubly.Its principle of work is: the signal that receives from antenna directly is added on the base stage b of BG1, between the collector c of BG1 and emitter e, amplify, signal after BG1 amplifies is added on the BG2 base stage b again, between the collector c of BG2 and emitter e, amplify, signal after finishing the secondary amplification is very strong, the base stage b that is added to BG3 again goes up (BG3 is used for switching tube), the emitter e of BG3 and collector c are obstructed when no signal, emitter e and the collector c conducting of BG3 when being added with certain signal and voltage, have been triggered, because a pin of light emitting diode is connected on the positive pole of battery, the emitter e of BG3 and collector c path after triggering, make another pin of light emitting diode and the negative electrode channel of battery, whether charged signal receiving circuit of being formed and signal amplify display circuit and cause the light emitting diode light that is triggered like this, reached across the insulation epidermis just to test out purpose.The selected frequency of this invention is fixed.So no frequency conversion utmost point.The present invention is easy to use, and test performance is strong, safe and reliable, can widespread usage in commercial production and household electrical appliance.
Below in conjunction with the drawings and Examples structure invention is described in further detail.
Fig. 1: the cut-open view that is concrete structure of the present invention
Fig. 2: be circuit theory diagrams of the present invention
In conjunction with Fig. 1:the electricity measurer contact (1) with excellent conductive performance and physical strength is moulded casting in the insulation crust (2) with plastics moulded section, and the electricity measurer contact is the screwdriver shape here, plays antenna effect and can double as screwdriver usefulness.Shell (2) is a transparent plastic because of what adopt, can observe the luminance brightness of light emitting diode.Shell (2) is a cylindrical cavity, end near electricity measurer contact (1), it is real cylindrical that cavity becomes, electricity measurer contact (1) tightly is embedded in a real cylindrical end, electricity measurer contact one end in contact of being inlayed is being done with red steel paper on the wiring board (3) of material, the long 40mm of this plate, wide 7mm, perforation leads of transistor on the wiring board, in order to support and to be connected amplifier tube (4), (5), switching tube (6), light emitting diode (7), the other end contact of wiring board (3) is on the negative pole of 1.5V battery (8), here used the battery (8) of two 1.5V, positive pole contact at battery (8) has an insulated wire (9), be used to weld a pin of light emitting diode (7), metal spring (10) tightly suppresses insulated wire (9), the wiring board that is electrically connected (3), battery (8), insulated wire (9) is installed in the cylindrical cavity of shell (2) nail (11), and to tightly suppress metal spring (10) Zhe Li nail (11) be the hand touched electrode, adopt this fit, be beneficial to convenient welding, the circuit structure compactness reduces cost, because the elastic pressure of metal spring makes from electricity measurer contact (1), form stable between wiring board (3) and the hand touched electrode (11), be electrically connected reliably, nut (12) is made with duroplasts, and spiral is connected on the shell (2).
During operation, with electricity measurer contact (1) and tested lamp cord, the contact of the insulation course epidermis of power lead and leader cable line, principle according to signal receiving circuit and signal amplification display circuit, under charged situation, during the testing power supply line, be that the live wire light emitting diode is just bright, be zero line light emitting diode just do not work (or little bright), open circuit as the live wire somewhere, the test contact contact position, light emitting diode does not just work, just can find the fault in the circuit, in time deal with.When test, the lead of good insulation preformance is in order to improve measurement sensitivity, need to test accurately, because transistor has only the reverse voltage about 60V with finger tentacle touched electrode (11), during the use test instrument, not with electricity measurer contact (1) directly and electrified body contact.
Claims (2)
1, one by plastic casing (2), test contact (1), current-limiting resistance, the examination electric tool that neon tube, metal spring (10) and hand touched electrode (11) are composed in series, it is characterized in that forming signal by electricity measurer contact (1) and hand touched electrode (11) accepts the loop and partly reach by wiring board (3) triode (4) (5), (6), luminotron (7) battery (8) is formed signal and is amplified and show partly, the electric test device that can test at the wire insulation outside surface.
2,, it is characterized in that luminotron is a light emitting diode as claims 1 described electric test device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85203769 CN85203769U (en) | 1985-09-08 | 1985-09-08 | Electronic voltage-detecting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85203769 CN85203769U (en) | 1985-09-08 | 1985-09-08 | Electronic voltage-detecting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85203769U true CN85203769U (en) | 1986-10-22 |
Family
ID=4799238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85203769 Ceased CN85203769U (en) | 1985-09-08 | 1985-09-08 | Electronic voltage-detecting unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85203769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609199A (en) * | 2019-09-16 | 2019-12-24 | 优利德科技(中国)股份有限公司 | Zero-line and live-line detection and identification method, device and system |
-
1985
- 1985-09-08 CN CN 85203769 patent/CN85203769U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609199A (en) * | 2019-09-16 | 2019-12-24 | 优利德科技(中国)股份有限公司 | Zero-line and live-line detection and identification method, device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CP03 | Change of name, title or address |
Patentee address after: Gansu city of Lanzhou province Xigu District of Gulang Road No. 1 Patentee address before: No. sixteen, forty-three East Village, Wuyi Mountain, Gansu, Lanzhou |
|
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: NO. 43, BUILDING 16, WUYISHAN XIN VILLAGE EAST, LANZHOU CITY, GANSU PROVINCE TO: NO. 1, GULANG ROAD, XIGU DISTRICT, LANZHOU CITY, GANSU PROVINCE |