Secret abilities of the indicator screwdriver

It so happens that you buy a device, but there is no sensible instruction for it. Or she's in Chinese. Here, for example, on the indicator screwdriver it is written - 4 in 1, and what other functions, except for determining the phase, are completely incomprehensible. And she lies idle, but could, it turns out, be very useful. Let's figure out what this little thing is capable of, and you will understand that every ruble in its value is fully justified.

Read in the article

1 With or without batteries?
2 Phase detection
3 Continuity dialing
4 Checking lamps and fuses
5 Finding hidden wiring

With or without batteries?

Before dealing with the functions of indicator screwdrivers, it should be noted that they can have varieties, united by a general principle of operation. They are contact or non-contact, for which you do not need to directly touch the wiring.

The simplest testers have a neon lamp as an indicator. Devices with additional functions are equipped with batteries. As a signaling device, there can be not only a light signal, but also a sound signal. Some models are additionally equipped with a display.

Secret abilities of the indicator screwdriver — To study the additional functions of a screwdriver, it is most convenient to use a universal model with batteries, the cost of which is about 70-100 rubles. It allows you to identify hidden wiring in a non-contact way

To check the performance of the tester, it is enough to close the circuit by touching the tip and pommel. The indicator immediately lights up at the working device.

Phase detection

The most important function of the indicator screwdriver is phase detection. To check it, you need to place the sting in the contact of the socket.

If the indicator is working, the phase is located here. Didn't work - zero

Continuity dialing

The tester will help not only determine the integrity of the wire, but also find the place of the break. This is not difficult to do. To establish the integrity, it is enough to touch the tip of the indicator screwdriver and the sting to the wire, and with the other hand to clamp the tip of the wire.

If the indicator is triggered, then the wire is intact. If not, there is an open circuit

To determine the location of the break, you need to power one end of the wire from the phase in the outlet

After that, touching the contact pad on the top of the tester, you need to run the sting along the wire. As long as there is voltage in it, the indicator will glow, and at the break point it will stop working further.

Then do not forget to disconnect the core from the phase and only then repair it.

Checking lamps and fuses

The tester will help determine the integrity of the fuse or lamp. This test does not require a power supply.

It is enough to touch the contact of the tested device with one hand, and then with a screwdriver sting to the other. Next, close the chain with your finger on the pommel. If the lamp or fuse is working, you will receive an indicator signal

Finding hidden wiring

The indicator screwdriver is able to find the wiring hidden under the 2 cm layer plasters.

To detect hidden wiring, you need to take the tester by the sting and hold the pommel along the wall. Where there is a live wire, the LED will light up or a beep will sound

Thus, it is very convenient to look for, for example, the place where the wire passes to lamp switch. Just remember that only a live line can be detected.

You can learn practical skills on using the indicator screwdriver in this short video:

Which tester do you use? Recommend a successful model in your opinion in the comments!

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