CN101881798A - Test pencil - Google Patents
Test pencil Download PDFInfo
- Publication number
- CN101881798A CN101881798A CN 201010165489 CN201010165489A CN101881798A CN 101881798 A CN101881798 A CN 101881798A CN 201010165489 CN201010165489 CN 201010165489 CN 201010165489 A CN201010165489 A CN 201010165489A CN 101881798 A CN101881798 A CN 101881798A
- Authority
- CN
- China
- Prior art keywords
- test pencil
- test
- neon tube
- spring
- insulation crust
- 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.)
- Pending
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- Eye Examination Apparatus (AREA)
Abstract
The invention discloses a test pencil. The test pencil comprises an insulated shell, a test contact, a protective resistor, a neon tube, a spring and a hand pole, wherein one end of the insulated shell is provided with the test contact, and the other end of the insulated shell is provided with the hand pole; the protective resistor, the neon tube and the spring are connected in series and arranged in the insulated shell; and the neon tube is connected in parallel with a small capacitor. The test pencil has the advantages that: the test pencil can normally emit light to indicate when testing strong current; and if the current of a measuring circuit is an induced current, the induced current flows through the capacitor and the human body in turn and then enters the ground, and the test pencil does not emit light.
Description
Technical field
The present invention 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.
Summary of the invention
The object of the present invention is to provide a kind of test pencil, 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 present invention is achieved by 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, advantage of the present invention is: when the test forceful electric power, and 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 present invention.
Embodiment
Consult the embodiment of Fig. 1 for a kind of test pencil of the present invention; 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 specific embodiments of the invention, but technical characterictic of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of being done or modify all is encompassed among the claim of the present invention.
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 201010165489 CN101881798A (en) | 2010-05-05 | 2010-05-05 | Test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165489 CN101881798A (en) | 2010-05-05 | 2010-05-05 | Test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101881798A true CN101881798A (en) | 2010-11-10 |
Family
ID=43053859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010165489 Pending CN101881798A (en) | 2010-05-05 | 2010-05-05 | Test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101881798A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208528U (en) * | 1987-05-30 | 1988-02-24 | 刘箭波 | Multi-purpose test pencil |
| CN2078884U (en) * | 1990-11-21 | 1991-06-12 | 刘冬文 | Voltage tester for identifying several voltage grades |
| CN2165450Y (en) * | 1993-08-16 | 1994-05-18 | 韩亚林 | Test pencil |
| CN2229086Y (en) * | 1995-03-13 | 1996-06-12 | 王瑞金 | Multifunctional test pencil |
| CN2377539Y (en) * | 1999-04-15 | 2000-05-10 | 桑永 | Test pencil |
| CN2501058Y (en) * | 2001-09-04 | 2002-07-17 | 卢恺南 | Dual-purpose pen for writing and testing electricity |
| CN2597995Y (en) * | 2003-01-10 | 2004-01-07 | 丁持志 | Energy storage flash low-voltage electrometer |
| CN201697972U (en) * | 2010-05-05 | 2011-01-05 | 浙江天能能源科技有限公司 | Test pencil |
-
2010
- 2010-05-05 CN CN 201010165489 patent/CN101881798A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208528U (en) * | 1987-05-30 | 1988-02-24 | 刘箭波 | Multi-purpose test pencil |
| CN2078884U (en) * | 1990-11-21 | 1991-06-12 | 刘冬文 | Voltage tester for identifying several voltage grades |
| CN2165450Y (en) * | 1993-08-16 | 1994-05-18 | 韩亚林 | Test pencil |
| CN2229086Y (en) * | 1995-03-13 | 1996-06-12 | 王瑞金 | Multifunctional test pencil |
| CN2377539Y (en) * | 1999-04-15 | 2000-05-10 | 桑永 | Test pencil |
| CN2501058Y (en) * | 2001-09-04 | 2002-07-17 | 卢恺南 | Dual-purpose pen for writing and testing electricity |
| CN2597995Y (en) * | 2003-01-10 | 2004-01-07 | 丁持志 | Energy storage flash low-voltage electrometer |
| CN201697972U (en) * | 2010-05-05 | 2011-01-05 | 浙江天能能源科技有限公司 | Test pencil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101110 |