CN201156068Y

CN201156068Y - Conductive wire cutting detector

Info

Publication number: CN201156068Y
Application number: CNU2008200102113U
Authority: CN
Inventors: 王鸶雅
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-16
Filing date: 2008-01-16
Publication date: 2008-11-26
Anticipated expiration: 2018-01-16

Abstract

The utility model discloses a wire disconnecting detector, which relates to a detector, in particular to a wire disconnecting detector used for detecting whether a wire is disconnected. The detector comprises a probe A and a probe B, and is characterized in that the probe A is mutually connected with the grid electrode of a field effect tube VT1, the drain electrode of the field effect tube VT1 is mutually connected with the positive electrode of a light emitting diode LED, the source electrode of the field effect tube VT1 is mutually connected with the base electrode of a three element tube VT2 through a resistor R1, the collector electrode of the three element tube VT2 is mutually connected with the negative electrode of the light emitting diode LED, and the emitting electrode of the three element tube VT2 is mutually connected with the probe B through a resistor R2; loudspeakers are mutually connected with the both ends of the light emitting diode LED in parallel, the both ends of the loudspeakers are mutually connected with the input end of an oscillation transformer, the output end of the oscillation transformer is mutually connected with the positive pole of a battery, and the negative pole of the battery is mutually connected with the emitting electrode of the three element tube VT2 through a switch S.

Description

The conductor cord disconnection detecting device

Technical field:

The utility model relates to a kind of detecting device, relates in particular to a kind of conductor cord disconnection detecting device whether lead breaks that is used to detect.

Background technology:

At present, mainly be to use multimeter to the detection of conductor cord disconnection, the exquisite workmanship that multimeter requires is made complicatedly, and technical requirement is higher, and though its detection effect is relatively good, its price is higher, and volume is bigger, and it is also very inconvenient to carry; Therefore, brought many inconvenience to the user.

The utility model content:

The utility model is exactly at the problems referred to above, and a kind of conductor cord disconnection detecting device easy to use is provided.

For achieving the above object, the utility model adopts following technical scheme, the utility model comprises probe A, probe B, it is characterized in that probe A links to each other with the grid of field effect transistor VT1, the drain electrode of field effect transistor VT1 links to each other with the positive pole of LED, the source electrode of field effect transistor VT1 links to each other through the base stage of resistance R 1 with triode VT2, and the collector of triode VT2 links to each other with the negative pole of LED, and the emitter of triode VT2 links to each other with probe B through resistance R 2; Two ends at LED are parallel with loudspeaker, and the two ends of loudspeaker link to each other with the input end of concussion transformer, and the output terminal of concussion transformer links to each other with the positive pole of battery, and the negative pole of battery links to each other through the emitter of switch S with triode VT2.

The beneficial effects of the utility model:

Member of the present utility model is few, and is simple in structure, and volume is little, easy to carry; And cost is low, and is easy to use, is suitable for popularizing.

Description of drawings:

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

Embodiment:

The utility model comprises probe A, probe B, probe A links to each other with the grid of field effect transistor VT1, the drain electrode of field effect transistor VT1 links to each other with the positive pole of LED, the source electrode of field effect transistor VT1 links to each other through the base stage of resistance R 1 with triode VT2, the collector of triode VT2 links to each other with the negative pole of LED, and the emitter of triode VT2 links to each other with probe B through resistance R 2; Two ends at LED are parallel with loudspeaker, and the two ends of loudspeaker link to each other with the input end of concussion transformer 1, and the output terminal of concussion transformer 1 links to each other with the positive pole of battery, and the negative pole of battery links to each other through the emitter of switch S with triode VT2.

During use, the lead that will detect earlier inserts live wire, and S then closes a switch, pin probe B of the present utility model with hand, probe A is moved along lead, if LED is luminous, hummer drums simultaneously, then the lead of explanation detection is qualified, promptly do not have the broken string situation, when moving on to the somewhere of lead as if probe A, LED is not luminous, hummer is sounding not, illustrates that then lead breaks herein.

Claims

1, conductor cord disconnection detecting device, comprise probe A, probe B, it is characterized in that probe A links to each other with the grid of field effect transistor VT1, the drain electrode of field effect transistor VT1 links to each other with the positive pole of LED, the source electrode of field effect transistor VT1 links to each other through the base stage of resistance R 1 with triode VT2, the collector of triode VT2 links to each other with the negative pole of LED, and the emitter of triode VT2 links to each other with probe B through resistance R 2; Two ends at LED are parallel with loudspeaker, and the two ends of loudspeaker link to each other with the input end of concussion transformer (1), and the output terminal of concussion transformer (1) links to each other with the positive pole of battery, and the negative pole of battery links to each other through the emitter of switch S with triode VT2.