Many times, it is required to check if there’s voltage coming in a line or not, mostly while making electrical connections or repairing electrical appliances. That is where a tester comes into play. Looking like a screwdriver, it is used to determine if there is any sort of voltage or not. There are two types of testers, a manual one and an electric one. Both work in the same way, but the electric one has an edge, as it shows the voltage in the voltage LCD display present on it.
How to use
To use a tester, it should be held in hand. Then, the tip should be touched with the wire line or socket or any other thing you’re testing it on. If it’s an electric tester, it’ll display the voltage of the display if any. Otherwise, if it’s a manual one, you once need to touch the metal touch screw on the top, and then if the light glows, it indicates the presence of voltage. One thing to make sure is that one should never touch the metal part of the head which is in contact with the testing material.
Common applications
1. Repairing electronic devices.
2. Testing the voltage on devices.
Safety Measures to follow
1. Never touch the head part of the tester which is in contact with the voltage line.
Important Links
How does an electric tester work (https://youtu.be/C9Dz3gOBEXc)
YouTube Video
