CN2394231Y - Voltage tester with audio and video indicator - Google Patents
Voltage tester with audio and video indicator Download PDFInfo
- Publication number
- CN2394231Y CN2394231Y CN 99245893 CN99245893U CN2394231Y CN 2394231 Y CN2394231 Y CN 2394231Y CN 99245893 CN99245893 CN 99245893 CN 99245893 U CN99245893 U CN 99245893U CN 2394231 Y CN2394231 Y CN 2394231Y
- Authority
- CN
- China
- Prior art keywords
- neon tube
- current
- plastic casing
- musical film
- test
- 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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- Electrophonic Musical Instruments (AREA)
- Auxiliary Devices For Music (AREA)
Abstract
The utility model discloses a voltage tester with an audio and video indicator. A circuit plate is arranged in a handle type plastic outer shell. Batteries are connected in series into a 3V power supply to supply power for a musical film, a transistor and a speaker. The front end of the circuit plate is orderly provided with the musical film, the transistor, the speaker, a current-limiting resistor and a neon tube, and is connected with a testing contact head arranged at the front end of the outer shell. The back end of the outer shell is provided with a touching hand electrode. When a hand contacts the touching hand electrode for a test, current passes through the neon tube, which leads the neon tube to start. Simultaneously, the current triggers the musical film to output signal voltage to a base electrode of the transistor to lead power to be amplified and drive the speaker to emit sound, which prompts people that an object which is tested is electrified.
Description
The utility model relates to the device that a kind of instructed voltage exists, the test pencil of test voltage specifically.
The common test pencil of Xiao Shouing is mainly by test contact in the market, current-limiting resistance, neon tube, metal spring and hand touched electrode are in series, when test contact contacts with tested metallic object, when staff contacts with the hand touched electrode, neon tube starter in the test pencil, the expression testee is charged.But when testing when staff's work high above the ground or under burning sun, whether because neon tube brightness is limited, it is charged to be difficult to tell testee for the moment, causes difficulty and inconvenience therefore for detection electric leakage work.
The purpose of this utility model provides a kind of can sounding and bright test pencil, and whether it can easily point out testee charged.
In order to solve above-mentioned task, scheme of the present utility model is made up of handle type plastic casing, test contact, current-limiting resistance, neon tube, musical film, loudspeaker and hand touched electrode, it is that a circuit board is set in the handle type plastic casing, two button cells are connected into the 3V power supply and are fixed on the rear end of circuit board by spring leaf, give musical film, triode and loudspeaker power supply.Musical film, triode, loudspeaker, current-limiting resistance, neon tube are installed in the front end of circuit board successively.The trigger end of musical film is connected with current-limiting resistance, neon tube and test contact, and earth terminal is connected in series with triode, loudspeaker, and test contact is moulded the front end of notes at plastic casing, and the hand touched electrode is arranged on the end of shell.When test contact contact power supply, staff is connected with the hand touched electrode, micro-current constitutes the loop by human body, electric current makes the neon tube starter by neon tube, electric current triggers the musical film vibration by musical film and sends music signal simultaneously, output signal voltage carries out power amplification to transistor base, promotes the loudspeaker sounding, and the prompting testee is charged.
The utility model has the advantages that simple in structurely, design is unique, and is convenient and practical, cheap.
Be described further below in conjunction with accompanying drawing
Fig. 1 is an acousto-optic hint pencil test structure synoptic diagram
Fig. 2 is the circuit theory diagrams of acousto-optic hint test pencil
A circuit board 11 is set in the plastic casing 5 shown in Fig. 1, and the rear side of circuit board is equipped with power-supply battery 2, and the front side of battery is equipped with musical film 3 successively, and musical film is a HL9300 type integrated circuit, 9013 type triodes 12, loudspeaker 4, current-limiting resistance 10, neon tube 9.Test contact 8 is moulded the front end of notes at shell, and rear side is equipped with spring leaf 6, and hand touched electrode 1 is equipped with in the rear end of shell, and spring leaf 13 is equipped with in the electrode inboard.The upper end of plastic casing is provided with cover plate, has neon tube viewport and loudspeaker louver on the cover plate, and cover plate is provided with screw 7.
Shown in figure 2 in the circuit theory diagrams, test contact 8 and neon tube 9,4. current-limiting resistance 10, musical film trigger end connect, and by the musical film earth terminal 3., hand touched electrode 1 and human body grounding constitute loop, neon tube starter.4. electric current triggers the musical film vibration by the musical film trigger end simultaneously, sends sound signal and 2. holds output signal voltage to carry out power amplification to transistor base by musical film, promotes the loudspeaker sounding, and music finishes, and shutdown recovers static cut-off state automatically.
Claims (4)
1, a kind of acousto-optic hint test pencil is by plastic casing, test contact, current-limiting resistance, neon tube, music integrated circuit sheet, loudspeaker and hand electric shock plate are formed, it is characterized in that: circuit board (11) is arranged in the handle type plastic casing, the rear side of circuit board is equipped with power-supply battery (2), music integrated circuit sheet (3), triode (12), loudspeaker (4), current-limiting resistance (10), neon tube (9) are equipped with in the front side of battery, test contact (8) is moulded the front end of notes at plastic casing, and the rear end of plastic casing is provided with hand touched electrode (1).
2, ask 1 described acousto-optic hint test pencil according to right, it is characterized in that 4. test contact (8) and neon tube (9), current-limiting resistance (10) musical film trigger end be in series and by the musical film earth terminal 3., hand touched electrode (1) and human body constitute the loop.
3, acousto-optic hint test pencil according to claim 1 is characterized in that: the inboard of hand touched electrode is provided with spring leaf (13), and the rear side of test contact is equipped with spring leaf (6).
4, acousto-optic hint test pencil according to claim 1, it is characterized in that: cover plate is equipped with in the upper end of plastic casing, and cover plate is provided with neon tube viewport and loudspeaker louver, and cover plate is provided with fixing threaded hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99245893 CN2394231Y (en) | 1999-09-30 | 1999-09-30 | Voltage tester with audio and video indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99245893 CN2394231Y (en) | 1999-09-30 | 1999-09-30 | Voltage tester with audio and video indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2394231Y true CN2394231Y (en) | 2000-08-30 |
Family
ID=34031671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99245893 Expired - Fee Related CN2394231Y (en) | 1999-09-30 | 1999-09-30 | Voltage tester with audio and video indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2394231Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771508A (en) * | 2016-12-29 | 2017-05-31 | 佛山市顺德区奥能电工器材有限公司 | A kind of multifunction test pencil |
-
1999
- 1999-09-30 CN CN 99245893 patent/CN2394231Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771508A (en) * | 2016-12-29 | 2017-05-31 | 佛山市顺德区奥能电工器材有限公司 | A kind of multifunction test pencil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |