CN201838236U

CN201838236U - Simple electronic circuit on and off detector for teaching

Info

Publication number: CN201838236U
Application number: CN2010205415380U
Authority: CN
Inventors: 陈凤枝
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-28
Filing date: 2010-09-28
Publication date: 2011-05-18
Anticipated expiration: 2020-09-28

Abstract

The utility model discloses a simple electronic circuit on and off detector for teaching, which comprises a box body that is provided with a small socket, a light-emitting diode (LED), a large socket and a lamp bulb, wherein the small socket, the LED, the large socket and the lamp bulb are connected with a circuit in the box body by leads; the small socket is a resistance judgment end or an on and off detection end; and the large socket is an on and off detection end or a resistance judgment end. The detector is not only rapid in speed of on and off detection of the circuit, but also simple in structure, easy to manufacture and very low in manufacturing cost and is very suitable for teaching in primary and secondary schools.

Description

The simple and easy electronic circuit break-make detecting device of teaching usefulness

Technical field

The utility model relates to a kind of pick-up unit, is specifically related to a kind of simple and easy electronic circuit break-make detecting device of the usefulness of imparting knowledge to students.

Background technology

Present known electronic circuit detecting device is a universal meter, it is easy to use, test function is many, but price comparison height, fragile, the general school particularly student of primary school uses " universal meter ", and can only be minority student usefulness, this can influence many classmates' study.

The utility model content

The purpose of this utility model provides a kind of simple and easy electronic circuit break-make detecting device of the usefulness of imparting knowledge to students, and this detecting device can not only fast detecting go out the break-make of electronic circuit, and is simple and easy to do, and cost of manufacture is cheap.

To achieve these goals, the technical solution adopted in the utility model is: a kind of simple and easy electronic circuit break-make detecting device of the usefulness of imparting knowledge to students, comprise box body, described box body is provided with primary socket, light emitting diode, big socket and bulb, primary socket, light emitting diode, big socket are connected by the circuit of lead with box body inside with bulb, wherein primary socket is that resistance is judged end or break-make test side, and big socket is that break-make test side or resistance are judged end.

Compared with prior art, the beneficial effects of the utility model are: this detecting device not only speed of detection line break-make is fast, and easy making simple in structure, and cost of manufacture is also very cheap, in being fit to very much, primary school's teaching uses.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a circuit diagram of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1 and Fig. 2, the simple and easy electronic circuit break-make detecting device of teaching usefulness of the present utility model, comprise box body 1, described box body 1 is provided with primary socket 2, light emitting diode 3, big socket 4 and bulb 5, primary socket 2, light emitting diode 3, big socket 4 are connected by the circuit of lead with box body 1 inside with bulb 5, wherein primary socket 2 is judged end for resistance, and big socket 4 is the break-make test side.

During use, the plug of prod afterbody inserted big socket 4 after, promptly available prod carries out on off test to circuit or body to be measured, general rule light emitting diode 3 and bulb 5 are bright, general rule light emitting diode 3 and bulb 5 do not work.Certainly, sometimes also possibility brightness is very weak for light emitting diode 3 and bulb 5, this shows that the circuit of detection has certain resistance, available in this case resistance judges that end carries out the general judgement of resistance, when resistance is judged end, with the short circuit of break-make test side, the plug of prod is inserted primary socket 2, be that available prod carries out the resistance judgement to detection line, if the resistance of detected circuit is greater than variable-resistance value, then the electric current of circuit mainly forms the loop by variable resistor and bulb 5, and can probably estimate the resistance of test line this moment by the brightness of observing bulb 5.

Claims

1. the simple and easy electronic circuit break-make detecting device of the usefulness of imparting knowledge to students, comprise box body (1), it is characterized in that: described box body (1) is provided with primary socket (2), light emitting diode (3), big socket (4) and bulb (5), primary socket (2), light emitting diode (3), big socket (4) and bulb (5) are connected by the inner circuit of lead and box body (1), wherein primary socket (2) is judged end or break-make test side for resistance, and big socket (4) is that break-make test side or resistance are judged end.