CN202256461U - Acousto-optic test pencil - Google Patents
Acousto-optic test pencil Download PDFInfo
- Publication number
- CN202256461U CN202256461U CN2011203266935U CN201120326693U CN202256461U CN 202256461 U CN202256461 U CN 202256461U CN 2011203266935 U CN2011203266935 U CN 2011203266935U CN 201120326693 U CN201120326693 U CN 201120326693U CN 202256461 U CN202256461 U CN 202256461U
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- Prior art keywords
- acousto
- test pencil
- power supply
- links
- hummer
- 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.)
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Abstract
An acousto-optic test pencil solves the problem that the existing test pencil cannot judge with the naked eye under strong light rays, and is characterized in that a sound production system is additionally arranged in a pencil body (1); and the sound production system comprises a buzzer (5) and an amplifying circuit, wherein the amplifying circuit comprises two triodes (7 and 10), a power supply (8) and a switch (9). The acousto-optic test pencil has the advantages of simple structure, wide adaptability and the like, is convenient to use, can provide labor work efficiency of electricity workers, and is of wide popularization and application value.
Description
One, technical field
The utility model belongs to the circuit measuring instrument, relates in particular to a kind of acousto-optic double-purpose test pencil that can judge circuit according to the acousto-optic dual signal.
Two, technical background
At present the electrician in the power construction process and during people's life staying idle at home repair circuit normally used acousto-optic double-purpose test pencil all be that neon tube, spring, the first-class structure of metal are set in the shaft of a writing brush; When its with the test pencil end with after lead contacts, hand is pressed the metal contact, if neon tube is luminous; Explain that this root lead is a live wire; Otherwise just might be zero line, when two lead neon tubes all do not work, explain that then live wire is disconnected.But when having because of indoor light too by force, particularly when the outdoor work, the luminous not obvious problem that is difficult to judge of neon tube.
Three, technical scheme
It is a kind of simple in structure, easy to use that the purpose of the utility model is to provide, the acousto-optic double-purpose test pencil that can test circuit according to the acousto-optic dual signal.
The main technical schemes of the utility model: it is by handwriting, nib, metal ball and is arranged at resistance in the handwriting, neon tube etc. and constitutes; In handwriting, set up a cover sonification system; The amplifying circuit that said sonification system is made up of hummer and two triodes, power supply and switches constitutes; The base stage of first triode links to each other with resistance, a binding post of the positive pole of collector and power supply and hummer links to each other, emitter links to each other with the base stage of second triode, the emitter of second triode through switch link to each other with the metal ball mutually with the negative pole of power supply, collector links to each other with another binding post of hummer.
The utility model beneficial effect is: not only simple in structure, and owing to be on the basis of traditional test pencil, to set up a cover audible signal, the problem that light can't be judged by force when having overcome outdoor study.
Below in conjunction with accompanying drawing the utility model is described further.
Four, description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram;
Fig. 2 is the utility model circuit theory synoptic diagram.
Among the figure: 1 is handwriting, and 2 is nib, and 3 is resistance, and 4 is neon tube, and 5 is hummer, and 6 is the metal ball, and 7,10 is triode, and 8 is power supply, and 9 is switch.
Five, embodiment
As shown in Figure 1, traditional test pencil is improved, in handwriting 1, set up a cover sonification system, the amplifying circuit that this sonification system is made up of hummer 5, two triodes, power supply 8 and switches 9 constitutes.Said power supply 8 is a miniature electric wave of 3V button; Be placed in the handwriting 1; The base stage of first triode 7 links to each other with resistance 3, a binding post of the positive pole of collector and power supply 8 and hummer 5 links to each other, emitter links to each other with the base stage of second triode 10, the emitter of second triode 10 through switch 9 link to each other with metal ball 6 mutually with the negative pole of power supply 8, collector links to each other with another binding post of hummer 5.When in office work, cut-off switch 9, when nib 2 touched live wire, hand was by metal ball 6, and flow through resistance 3, neon tube 4 of electric current forms the loop with the earth, and neon tube 4 is luminous, is designated as live wire.When at outside work, close a switch 9, nib is contacted circuit, hand is by metal ball 6, and the base stage of triodes 7 is injected in electric current current-limiting resistance 3 backs of flowing through, and through twice amplification after, drives hummer work sounding, and while neon tube 4 is luminous, is designated as live wire.
Claims (1)
1. acousto-optic double-purpose test pencil; It comprises handwriting (1), nib (2), metal ball (6) and is arranged at resistance (3), the neon tube (4) in the handwriting (1); It is characterized in that: in handwriting (1), set up a cover sonification system; The amplifying circuit that said sonification system is made up of hummer (5) and two triodes (7,10), power supply (8) and switch (9) constitutes; The base stage of first triode links to each other with resistance (3), a binding post of the positive pole of collector and power supply (8) and hummer (5) links to each other, emitter links to each other with the base stage of second triode (10), the emitter of second triode (10) through switch (9) link to each other with metal ball (6) mutually with the negative pole of power supply (8), collector links to each other with another binding post of hummer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203266935U CN202256461U (en) | 2011-08-31 | 2011-08-31 | Acousto-optic test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203266935U CN202256461U (en) | 2011-08-31 | 2011-08-31 | Acousto-optic test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256461U true CN202256461U (en) | 2012-05-30 |
Family
ID=46117680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203266935U Expired - Fee Related CN202256461U (en) | 2011-08-31 | 2011-08-31 | Acousto-optic test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527485A (en) * | 2015-12-04 | 2016-04-27 | 上海应用技术学院 | Multifunctional household electroprobe |
-
2011
- 2011-08-31 CN CN2011203266935U patent/CN202256461U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527485A (en) * | 2015-12-04 | 2016-04-27 | 上海应用技术学院 | Multifunctional household electroprobe |
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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: 20120530 Termination date: 20120831 |