CN201697972U - Test pencil - Google Patents
Test pencil Download PDFInfo
- Publication number
- CN201697972U CN201697972U CN 201020182761 CN201020182761U CN201697972U CN 201697972 U CN201697972 U CN 201697972U CN 201020182761 CN201020182761 CN 201020182761 CN 201020182761 U CN201020182761 U CN 201020182761U CN 201697972 U CN201697972 U CN 201697972U
- Authority
- CN
- China
- Prior art keywords
- test pencil
- test
- neon tube
- spring
- utility
- Prior art date
- 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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- Measuring Leads Or Probes (AREA)
Abstract
The utility model discloses a test pencil, which comprises an insulation shell, a test contact, a protective resistor, a neon tube, a spring and a touch pole, wherein one end of the insulation shell is provided with the test contact, the other end of the insulation shell is provided with the touch pole, the protective resistor, the neon tube and the spring are sequentially connected in series in the insulation shell, and the neon tube is connected with a small capacitor in parallel. The utility model has the advantages that the test pencil can give out light normally for indication when testing strong electricity, and when the circuit to be tested is induced electricity, the induced electricity enters the earth via the capacitor and the human body, and the test pencil does not give out light.
Description
Technical field
The utility model relates to a kind of test pencil.
Background technology
Common test pencil is when the test three-phase alternating current, if charged circuit is longer, when at this moment even three-phase alternating current lacks a phase power supply, which wire phase shortage also is difficult to judge with general test pencil is, because circuit can make the capacitance that produces between parallel line and the line increase than length, make uncharged a certain wire produce induced electricity, thereby influenced the measurement of test pencil.
The utility model content
The purpose of this utility model is to provide a kind of test pencil, and in the time of can effectively solving the three-phase alternating current of growing at the measurement alive circuit, common test pencil is difficult to judge to be the problem of which wire phase shortage.
In order to solve the problems of the technologies described above; the utility model is achieved through the following technical solutions: a kind of test pencil; comprise that insulation crust, test contact, protective resistance, neon tube, spring, hand touch the utmost point; described insulation crust one end is provided with test contact; the other end of described insulation crust is that hand touches the utmost point; described protective resistance, neon tube, spring are connected successively and are arranged in the insulation crust, and described neon tube is parallel with a little electric capacity.
Preferably, described capacitance is 1200-1800P; Can reach the capacitance scope of better effects.
Further, described capacitance is 1500P; Best capacitance value.
Preferably, described protective resistance resistance is 1 megaohm～3 megaohms; Can play the protective resistance Standard resistance range that cost is saved in better protection simultaneously to human body.
Further, described protective resistance resistance is 2 megaohms; The best resistance that can protect the user can reduce cost again.
Compared with prior art, the utility model has the advantages that: when the test forceful electric power, the normal luminous indication of electroprobe energy, when measuring circuit was induced electricity, induced electricity can enter the earth through human body again by electric capacity, and test pencil is not luminous.
Description of drawings
Fig. 1 is the circuit block diagram of a kind of test pencil of the utility model.
Embodiment
Consult the embodiment of Fig. 1 for a kind of test pencil of the utility model; a kind of test pencil; comprise that insulation crust 1, test contact 2, protective resistance 3, neon tube 4, spring 5, hand touch the utmost point 6; described insulation crust 1 one ends are provided with test contact 2; the other end of described insulation crust 1 is that hand touches the utmost point 6; described protective resistance 3, neon tube 4, spring 5 are connected successively and are arranged in the insulation crust 1, and described neon tube 4 is parallel with the electric capacity 7 of a 1500P, and described protective resistance 3 resistances are 2 megaohms.
During use, hold insulation crust 1, with test contact 2 contact testees, the hand of the test pencil that press...withes one's finger touches the utmost point 6 and measures.
The above only is a specific embodiment of the utility model, but technical characterictic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (5)
1. test pencil; comprise that insulation crust (1), test contact (2), protective resistance (3), neon tube (4), spring (5), hand touch the utmost point (6); described test contact (2) is arranged on an end of insulation crust (1); described hand touches the other end that the utmost point (6) is arranged on insulation crust (1); described hand touches the utmost point (6) and contacts with spring (5); described test contact (2), protective resistance (3), neon tube (4), spring (5) are connected successively and be arranged in the insulation crust (1), it is characterized in that: described neon tube (4) is parallel with an electric capacity (7).
2. a kind of test pencil as claimed in claim 1 is characterized in that: described electric capacity (7) capacity is 1200-1800P.
3. a kind of test pencil as claimed in claim 2 is characterized in that: described electric capacity (7) capacity is 1500P.
4. a kind of test pencil as claimed in claim 1 is characterized in that: described protective resistance (3) resistance is 1 megaohm～3 megaohms.
5. a kind of test pencil as claimed in claim 4 is characterized in that: described protective resistance (3) resistance is 2 megaohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020182761 CN201697972U (en) | 2010-05-05 | 2010-05-05 | Test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020182761 CN201697972U (en) | 2010-05-05 | 2010-05-05 | Test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697972U true CN201697972U (en) | 2011-01-05 |
Family
ID=43399219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020182761 Expired - Fee Related CN201697972U (en) | 2010-05-05 | 2010-05-05 | Test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697972U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881798A (en) * | 2010-05-05 | 2010-11-10 | 浙江天能能源科技有限公司 | Test pencil |
| CN105345687A (en) * | 2015-12-16 | 2016-02-24 | 苏州太湖国家旅游度假区希成五金加工厂 | Wire nippers |
-
2010
- 2010-05-05 CN CN 201020182761 patent/CN201697972U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881798A (en) * | 2010-05-05 | 2010-11-10 | 浙江天能能源科技有限公司 | Test pencil |
| CN105345687A (en) * | 2015-12-16 | 2016-02-24 | 苏州太湖国家旅游度假区希成五金加工厂 | Wire nippers |
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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: 20110105 Termination date: 20140505 |