CN2233090Y

CN2233090Y - Sounding electroscope

Info

Publication number: CN2233090Y
Application number: CN 94214723
Authority: CN
Inventors: 陈忠彦
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-09
Filing date: 1994-06-09
Publication date: 1996-08-14
Anticipated expiration: 2004-06-09

Abstract

The utility model relates to a sounding electroscope. The utility model ascertains the existence of electricity according to the sound of a loudspeaker, which is irrelevant to the existence of light sources in an electricity verification environment, and thereby, the utility model has the advantage of convenient operation. A battery (E1) arranged on a shell body passes through a switch (K1) and then is connected with composite type amplifying tubes (3 DG 1-6), wherein, the switch (K1) is exposed on the shell body. The bases of the tubes are connected with a conductor probe (F) exposed on the shell body. The terminal end of a circuit is connected with an oscillation amplifying circuit which is composed of resistors (R1, R2, R3), capacitors (C1, C3) and triodes (3DG6, 3AX31), the amplifying circuit is connected with a loudspeaker (D), and the amplifying circuit is connected with an indicating lamp (J) through a current-limiting resistor (R4).

Description

The sounding electroscope

The utility model relates to a kind of electroscope, belongs to the sounding electroscope.

Electroscope is the electrician personnel identify to be had electricity or do not have electricity on electrical equipment or the circuit a instrument, existing neon tube or light emitting diode pen type electroscope, staff contact pen end conductor end during use, by luminous on the handwriting and not luminous judge be with or without.When the night electrical verification, if there is not light source on the work-yard, just can't carry out electrical verification work, when the work-yard has the brightness of light source strong, be difficult to also find out that electroscope whether luminous, often causes misunderstanding.May cause electric shock accidents.

The purpose of this utility model is to avoid above-mentioned deficiency of the prior art, and a kind of band light source is provided, do not contact just can electrical verification the sounding electroscope, safe and reliable.

The purpose of this utility model can reach by the following technical programs, battery (E1) is housed in the housing connects compound amplifier tube (3DG1～6) through being exposed to switch on the housing (K1), base stage is connected to the conductor probe (F) that is exposed on the housing on the pipe, the circuit end connects the oscillator-amplification circuit that is made of resistance (R1, R2, R3), electric capacity (C1, C2) and triode (3DG6,3AX31), is connected to loudspeaker (D) on the amplifying circuit and connects pilot lamp (J) through current-limiting resistance (R4).

The utility model can have following effect than above-mentioned prior art: have electricity then to have electric field on the electrical verification body around it, this electroscope upper conductor probe F is near the electrical verification body, promptly put in electric field, the electroscope upper speaker has just been sounded, there is not electricity then not have sound on the electrical verification body, find out that thus this electroscope is not subjected to the light and shade condition restriction of environment, easy to use, safe and reliable.Simultaneously, owing on the electroscope light source is arranged in addition, can be in electrical verification under the dark surrounds and handling problem.

Figure is the utility model circuit theory diagrams.

Below in conjunction with accompanying drawing will the utility model is described in further detail:

Shown in figure, battery E1 is housed in the housing (not shown), K switch 1 connects compound amplifier tube 3DG1～6 of being made up of a plurality of triodes on the housing through being exposed on the circuit, be connected to the conductor probe F that is exposed on the housing on the base stage of amplifier tube, connect the oscillator-amplification circuit that is made of resistance (R1, R2, R3), electric capacity (C1, C2) and triode (3DG6,3AX31) on the circuit of amplifier tube, amplifying circuit is connected to loudspeaker D and connects pilot lamp through current-limiting resistance R4.

Can between above-mentioned battery E1 and resistance R 1, be connected to two contacts (A, B) that are exposed on the housing; Resistance R 3 can be adopted potentiometer.But pilot lamp J distribution source and switch.The collector of above-mentioned 3DG6 is connected on the base stage of 3AX31, meet loudspeaker D on the collector of 3AX31, between the resistance in series on the base stage of 3DG6 (R2, R3), be parallel on the power circuit with capacitor C 2 after resistance (R2, R3) is connected with capacitor C 1, wherein resistance R 1 is a current-limiting resistance.

Hand-held electroscope makes probe F near the electrical verification body during use, presses K switch 1 and sounds when loudspeaker, and identifying has electricity, otherwise does not have.The electrical verification body of forbidding during use to pop one's head in exposed contacts.

Claims

1, a kind of generation electroscope that on housing, constitutes, it is characterized in that: battery (E1) is housed in the housing connects compound amplifier tube (3DG1～6) through being exposed to switch on the housing (K1), base stage is connected to the conductor probe (F) that is exposed on the housing on the pipe, the circuit end connects the oscillator-amplification circuit that is made of resistance (R1, R2, R3), electric capacity (C1, C2) and triode (3DG6,3AX31), is connected to loudspeaker (D) on the amplifying circuit and connects pilot lamp (J) through current-limiting resistance (R4).

2, electroscope according to claim 1 is characterized in that: be connected to two contacts (A, B) that are exposed on the housing between battery (E1) and the resistance (R1).