CN2287727Y - Multifunctional circuit tester - Google Patents

Abstract

The utility model discloses a multifunctional circuit testing device. The utility model is composed of a general electric torch, a screw driver, a neon tube, and a carbon resistance tube, and the screw driver, the neon tube, and the carbon resistance tube are additionally arranged on the general electric torch. The utility model is suitable for being used for illuminating, screwing a screw, testing whether a circuit is on or is off, testing whether a metallic body has electricity, and testing conditions and polarity for a diode and an audion. The utility model has the advantages of multifunction, portability, economy, and practicality.

Description

The multifunctional circuit tester

The utility model relates to a kind of improved multifunctional circuit tester.

The used instrument of test loop mainly contains universal meter at present, and its function singleness is handled apparatus failure, inconvenience, and cost height.

Task of the present utility model is that a kind of improved multifunctional circuit tester will be provided, and it has the resistance grade function of multimeter, can judge triode with it, the polarity of diode and quality also can be judged the silicon controlled quality, and it is by torch, electroscope, circuit tester is formed one.

Fig. 1 is the utility model sectional view.

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

Below with reference to accompanying drawing utility model is described in detail.

With reference to Fig. 1, screwdriver (3) with excellent conductive performance and physical strength is moulded casting in insulation crust (11), here screwdriver (3) can be used as test contact, shell (11) has two cylindrical cavities, put neon tube (8) in the cylindrical cavity near test screwdriver (3) base portion, and it is continuous with lead, the opposite side of neon tube (8) is connected with carbon resistance (7), electroprobe spring (12), rearmost end has hand contact (10), and the cylindrical cavity Inner Front End of opposite side is by there being bulb (2), after have battery (1) that the spring (13) that is connected with lid is arranged at last, spring (13) connects the lead (4) that has fish folder (5), and the shell rear portion has bonnet (9).

The multifunctional circuit tester when checking electric wiring, presss from both sides the end that (5) clamp circuit with the fish on the examination device rear end lead (4), with screwdriver (3) head contact other end circuit, opens switch (6) again, if circuit is disconnected, bulb (2) is then bright, otherwise does not work; When checking the diode quality, clamp a pin with fish folder (5), with screwdriver (3) contact another pin, to transfer excessively when bulb (2) is bright again, bulb does not then work, this illustrates that this diode is good, otherwise be bad, check the diode polarity chron, the pin of screwdriver when bulb is bright (3) contact is the positive pole of diode, the pin of fish folder (5) folder is a negative pole, and the test philosophy of triode is same; When the survey metallic object has or not electricity, screwdriver (3) head is contacted with tested metallic object, the part of hand contacts with hand contact (10), if neon tube (8) starter illustrates that tested metallic object is charged.

The above, this utility model has illumination, the turn of the screw, survey electricity, surveys effects such as diode, triode.

Claims (2)

1, multifunctional circuit tester of being made up of shell (11), screwdriver (3), neon tube (8), carbon resistance (7), hand contact (10), it is characterized in that: be connected with illuminating torch, an end of its switch (6) links to each other with the base portion of screwdriver (3).

2, by the multifunctional circuit tester of claim 1 regulation, it is characterized in that: the rear portion of battery (1) is connected with the lead (4) that has fish folder (5).

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