CN204536407U - A kind of simple and easy low-voltage test pencil - Google Patents
A kind of simple and easy low-voltage test pencil Download PDFInfo
- Publication number
- CN204536407U CN204536407U CN201520251446.1U CN201520251446U CN204536407U CN 204536407 U CN204536407 U CN 204536407U CN 201520251446 U CN201520251446 U CN 201520251446U CN 204536407 U CN204536407 U CN 204536407U
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- CN
- China
- Prior art keywords
- shell
- test
- diode
- nib
- chuck
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of simple and easy low-voltage test pencil, it comprises: test nib, insulation sleeve, a shell, cable, chuck; Test nib is positioned at the high order end of test pencil, shell is positioned at the centre of test pencil, between test nib and a shell, be provided with insulation sleeve connect, the right-hand member of shell is connected to cable, one of cable is connected with the electric elements on a shell, the other end of cable is connected with chuck, and the electric elements on test nib, a shell, chuck form a circuit loop; The simple and easy low-voltage test pencil of the one that the utility model provides, it is simple for production, easy to use, although it is the same with common test pencil can not measure magnitude of voltage quantitatively, but tested object can be checked out easily whether to there is voltage, detect alternating voltage or DC voltage, and the polarity of voltage, use when facilitating electrophile to overhaul circuit.
Description
Technical field
The utility model relates to a kind of electric circuit inspection field, particularly a kind of simple and easy low-voltage test pencil.
Background technology
Test pencil is the instrument that electrician commonly uses, common test pencil can only check household electrical appliance and electronic installation whether to there is high voltage (usually >=60V) over the ground, whether low-voltage is there is in one low voltage circuit of inspection, when such as whether electric bicycle, automobile circuit are energized, just without ample scope for abilities, because electric bicycle, automobile circuit are all low-voltages, common test pencil test job just cannot be carried out.
Utility model content
The purpose of this utility model be overcome prior art above-mentioned deficiency and a kind of simple and easy low-voltage test pencil is provided, it is simple for production, easy to use, although it is the same with common test pencil can not measure magnitude of voltage quantitatively, but tested object can be checked out easily whether to there is voltage, detect alternating voltage or DC voltage, and the polarity of voltage, supplied for electronic fan uses when making, or uses during motor circuit maintenance.
The technical solution of the utility model is: a kind of simple and easy low-voltage test pencil, and it comprises test nib, insulation sleeve, a shell, cable, chuck; Test nib is positioned at the high order end of test pencil, shell is positioned at the centre of test pencil, between test nib and a shell, be provided with insulation sleeve connect, the right-hand member of shell is connected to cable, one of cable is connected with the electric elements on a shell, the other end of cable is connected with chuck, and the electric elements on test nib, a shell, chuck form a circuit loop.
Preferably, described test nib is wrapped a fritter copper sheet by metallic object and is welded, and is provided with wedge angle, is convenient to the use of probe in the front of test nib, be provided with insulation sleeve installing mechanism at the afterbody of test nib, be provided with cable termination in the centre of test nib.
Preferably, a described shell is formed by hollow cylinder plastic production, in the inside of a shell, testing circuit board is housed, I diode, II diode, III diode, IV diode is provided with at circuit board, current regulator diode, the diode that glows, green light diode, four diode composition bridge rectifier circuits, a serial connection current regulator diode in the middle of bridge rectifier circuit, make to constitute the identical and AC constant-current source of forward and reverse constant current value, connect a reverse light emitting diode parallel with one another on the side of bridge rectifier circuit again.
Preferably, described chuck is made by metal crocodile clip, is provided with cable wiring hole in one end of chuck, is provided with crocodile clamp system at the other end of chuck.
The utility model compared with prior art has following features:
The simple and easy low-voltage test pencil of the one that the utility model provides, it is simple for production, easy to use, although it is the same with common test pencil can not measure magnitude of voltage quantitatively, but tested object can be checked out easily whether to there is voltage, detect alternating voltage or DC voltage, and the polarity of voltage, use when facilitating electrophile to overhaul circuit.
Be further described below in conjunction with the detailed construction of the drawings and specific embodiments to utility model.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model circuit.
Embodiment
As shown in drawings: a kind of simple and easy low-voltage test pencil, it comprises: test nib 1, insulation sleeve 2, a shell 3, cable 4, chuck 5; Test nib 1 is positioned at the high order end of test pencil, shell 3 is positioned at the centre of test pencil, between test nib 1 and a shell, 3 are provided with insulation sleeve 2 and connect, the right-hand member of shell 3 is connected to cable 4, one of cable 4 is connected with the electric elements on a shell 3, the other end of cable 4 is connected with chuck 5, and the electric elements on test nib 1, a shell 3, chuck 5 form a circuit loop.
Described test nib 1 is wrapped a fritter copper sheet by metallic object and is welded, and is provided with wedge angle, is convenient to the use of probe in the front of test nib, is provided with insulation sleeve installing mechanism at the afterbody of test nib, is provided with cable termination in the centre of test nib.
A described shell 3 is formed by hollow cylinder plastic production, in the inside of a shell, testing circuit board is housed, I diode VD1 is provided with at circuit board, II diode VD2, III diode VD3, IV diode VD4, current regulator diode VD5, glow diode VD6, green light diode VD7, four diode composition bridge rectifier circuits, a serial connection current regulator diode in the middle of bridge rectifier circuit, make just constituting one, identical and the AC constant-current source of reverse constant current value, a reverse light emitting diode parallel with one another is connect again on the side of bridge rectifier circuit.
Described chuck 5 is made by metal crocodile clip, is provided with cable wiring hole in one end of chuck, is provided with crocodile clamp system at the other end of chuck.
Principle of work of the present utility model and using method are: if tested voltage is direct current, when testing that nib 1 connects positive pole, chuck 5 connects negative pole, the diode VD6 that glows is luminous, otherwise when test nib 1 connects negative pole, chuck 5 connects positive pole, green light diode VD7 is luminous, if alternating current, glow diode VD6, green light diode VD7 luminescence simultaneously, can distinguish alternating current and direct current, distinguish galvanic polarity during use according to this.
During use, chuck 5 is clipped on the line end publicly of tested object, handheld test nib 1, by each relevant test point of metal penpoint contact, if glowed, diode VD6 lights, illustrate that test nib 1 exists positive voltage over the ground, otherwise, if green light diode VD7 lights, illustrate that test nib 1 exists negative voltage over the ground, if the diode VD6 and green light diode VD7 that glows is simultaneously bright, then illustrate that measured point exists alternating current, if glowed, diode VD6 and green light diode VD7 does not all work, then illustrate that on measuring point, no-voltage or voltage are lower than 4.5V.
Claims (4)
1. a simple and easy low-voltage test pencil, is characterized in that: it comprises test nib, insulation sleeve, a shell, cable, chuck; Test nib is positioned at the high order end of test pencil, shell is positioned at the centre of test pencil, between test nib and a shell, be provided with insulation sleeve connect, the right-hand member of shell is connected to cable, one of cable is connected with the electric elements on a shell, the other end of cable is connected with chuck, and the electric elements on test nib, a shell, chuck form a circuit loop.
2. the simple and easy low-voltage test pencil of one according to claim 1, it is characterized in that: described test nib is wrapped a fritter copper sheet by metallic object and is welded, wedge angle is provided with in the front of test nib, be convenient to the use of probe, be provided with insulation sleeve installing mechanism at the afterbody of test nib, be provided with cable termination in the centre of test nib.
3. the simple and easy low-voltage test pencil of one according to claim 1, it is characterized in that: a described shell is formed by hollow cylinder plastic production, in the inside of a shell, testing circuit board is housed, I diode is provided with at circuit board, II diode, III diode, IV diode, current regulator diode, glow diode, green light diode, four diode composition bridge rectifier circuits, a serial connection current regulator diode in the middle of bridge rectifier circuit, make just constituting one, identical and the AC constant-current source of reverse constant current value, a reverse light emitting diode parallel with one another is connect again on the side of bridge rectifier circuit.
4. the simple and easy low-voltage test pencil of one according to claim 1, is characterized in that: described chuck is made by metal crocodile clip, is provided with cable wiring hole in one end of chuck, be provided with crocodile clamp system at the other end of chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251446.1U CN204536407U (en) | 2015-04-24 | 2015-04-24 | A kind of simple and easy low-voltage test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251446.1U CN204536407U (en) | 2015-04-24 | 2015-04-24 | A kind of simple and easy low-voltage test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204536407U true CN204536407U (en) | 2015-08-05 |
Family
ID=53750393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520251446.1U Expired - Fee Related CN204536407U (en) | 2015-04-24 | 2015-04-24 | A kind of simple and easy low-voltage test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204536407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203902A (en) * | 2015-09-10 | 2015-12-30 | 国网天津宝坻供电有限公司 | Novel wiring checking device |
-
2015
- 2015-04-24 CN CN201520251446.1U patent/CN204536407U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203902A (en) * | 2015-09-10 | 2015-12-30 | 国网天津宝坻供电有限公司 | Novel wiring checking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150805 Termination date: 20160424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |