CN2154487Y

CN2154487Y - Electron acoustic test connection pen

Info

Publication number: CN2154487Y
Application number: CN 93201308
Authority: CN
Inventors: 宋庆彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-10
Filing date: 1993-01-10
Publication date: 1994-01-26
Anticipated expiration: 2003-01-10

Abstract

The utility model relates to a test pencil, which is characterized in that except a probe, a pencil body, and a neon bulb in the prior art, an electronic circuit with electronic music is arranged in pencil body. After a switch of the test pencil is closed, if the probe touches the fire wire, the neon bulb emits light, and simultaneously the test pencil also emits the 'ding dong' sound to remind operators that the circuit has electricity, and otherwise the test pencil neither emits light, nor has sound. The utility model has the advantage of convenient carrying, and displays the sound and light simultaneously. The utility model is accurate, sensitive, and safe, and provides safety guard for the operators who work in the external environment with stronger light rays.

Description

Electron acoustic test connection pen

The utility model belongs to a kind of test pencil.

The electrical test pencil that electrician's operation is at present used, general all form by a metallic object of current-limiting resistance in probe, handwriting, the handwriting and neon bulb and handwriting afterbody, this test pencil is the metallic object of finger contact handwriting afterbody in use, probe contact power supply, if power supply has, then the neon bulb in the handwriting is luminous, if neon bulb does not work and just illustrates that power supply does not have.This test pencil can only use in place indoor or that light is darker relatively, if open-air field work, particularly operation under the condition that sunlight is stronger in the open air, very weak because of the light that neon bulb sends, the place is under the high light line, be difficult to find out that neon bulb has been bright or has not had bright, operating personnel must cover test pencil by both hands sometimes so, cover the high light line and differentiate, and have so just increased the difficulty of operation, particularly high-altitude field work will meet accident sometimes.

The purpose of this utility model is a kind of test pencil that has electronic audio simultaneously again can be luminous of design, to solve the difficulty of operation under the high light line.

The utility model external form as shown in Figure 2, it mainly comprises probe (1), handwriting (2), K switch (3) and bonnet (4), its key is: in handwriting (2) except a neon bulb is arranged, also has an electronic circuit that charged consonant is happy, this circuit also has rectification diode D, two triode BG except current-limiting resistance comprising prior art and neon bulb ₁, BG ₂, an electronic music ic chip, a miniature output transformer B and a piezoelectric ceramic piece HTD.K switch of the present utility model (3) is located on the handwriting (2), finger touch position easily during operation; Bonnet of the present utility model (4) and handwriting (2) adopt and are threaded, and promptly bonnet (4) can be opened, and the button cell of two joint 1.5V is installed in the rear portion of handwriting (2), opens bonnet (4) and can change battery at any time.

Principle of the present utility model is: as shown in Figure 1, Closing Switch K at first, the K switch that promptly press...withes one's finger (3), when probe (1) when touching phase line (live line), resistance R current limliting, neon bulb is luminous.When neon bulb is luminous, after the diode D rectification as triode BG ₁Control signal and conducting triggers integrated circuit (IC) outputting music signal, this signal is through BG ₂After the amplification, driving transformer B boosts, and drives " ding-dong " sound that piezoelectric ceramic piece HTD sends about 3 seconds, stops automatically then.If probe (1) contact is zero line (ground wire), so, neon bulb is not luminous, and the electronic music integrated package is sounding not also.Played the security personnel effect of sound, the dual demonstration of light.

Circuit of the present utility model is design like this: probe (1) and current-limiting resistance R, neon bulb, commutation diode D, triode BG ₁Series connection, the positive pole of diode D connects neon bulb, and negative pole meets triode BG ₁Base stage, triode BG ₁Collector meet positive source and IC positive pole, BG ₁Emitter connect the trigger electrode of IC; BG ₂Emitter connect power cathode and IC negative pole, Low ESR one end and the BG of transformer B ₂Collector link to each other, another termination positive source, piezoelectric ceramic piece HTD connects the high impedance two ends.

The utility model has the advantages that: external form is similar to prior art, and is easy to carry, and circuit is simple, and sound, light shows simultaneously, and is accurate, sensitive, safe and reliable, provides safety guarantee in particular for the electrician's operation when extraneous light is strong.

Each electronic component that the utility model adopts:

R=4K; Neon bulb adopts neon bulb of the prior art; Step-up transformer adopts the midget receiver output transformer; The electronic music ic chip adopts KD-153H; Diode D 2CP mninidiode, working inverse voltage＞100V; K switch adopts little shape soft-touch type; Triode BG ₁, BG ₂All adopt CS9013 or 3DG6, β 〉=60, plastic packaging shape, withstand voltage no requirement (NR).

Description of drawings:

Fig. 1: circuit theory diagrams of the present utility model

Fig. 2: external form synoptic diagram of the present utility model

1, probe 2, handwriting 3, K switch 4, bonnet

Claims

1, a kind of electronic acoustooptic test pencil comprises the neon bulb in probe (1), handwriting (2) and the handwriting (2), it is characterized in that: except that a neon bulb was arranged, also design had an electronic circuit that charged consonant is happy in handwriting (2); Circuit in the handwriting (2) is by current-limiting resistance R, neon bulb, commutation diode D, triode BG ₁, BG ₂, electronic music ic chip, miniature output transformer B and piezoelectric ceramic piece HTD form; Probe (1) and current-limiting resistance R, neon bulb, rectification diode D, triode BG ₁Series connection, the positive pole of diode D connects neon bulb, and negative pole meets triode BG ₁Base stage, triode BG ₁Collector meet positive source and IC positive pole, BG ₁Emitter connect the trigger electrode of IC; BG ₂Emitter connect power cathode and IC negative pole, Low ESR one end and the BG of transformer B ₂Collector link to each other, another termination positive source, piezoelectric ceramic piece HTD connects the high impedance two ends.

2, according to the described electronic acoustooptic test pencil of claim 1, it is characterized in that: K switch (3) is located on the handwriting (2).

3, according to claim 1,2 described electronic acoustooptic test pencils, it is characterized in that: handwriting (2) and bonnet (4) are for being threaded, and battery is installed in the rear portion of handwriting (2).