Voltage tester is an essential and important tool in your electrical toolkit. It is because this is used to check the presence of voltage in a circuit before you start working on it.

A voltage tester, regardless of its type, operates on the principle of identifying the presence of voltage. This simple device can show the presence of electrical voltage based on the principle of Ohm’s Law.

This law says that the current passing through a conductor between two points is directly proportional to the voltage across the two points.

When you connect the probes of a voltage tester to two points in an electrical circuit a closed circuit or loop is formed. Generally, one end is kept to a suspected live conductor and the other to a ground source.

This allows electrical current to flow from the higher potential to the lower potential. The current inside the voltage tester passes through a resistance. The value of the resistance is known.

The drop in the voltage across this internal resistance is measured and displayed on the screen. In the basic voltage testers, a light or sound gets triggered, which means the voltage is present. You do not know the precise value in this case.

There are various Voltage Tester manufacturers in india that make good-quality testers. You need to get a suitable tester as per your needs.

The purpose of voltage testers is for safety. They protect the user from accidental contact with an electrical circuit.

Types of Voltage Testers

There are contact testers and non-contact testers. A non-contact voltage tester detects voltage through insulation. It uses capacitive coupling between the wire carrying the voltage and the sensor tip.

When you bring the tester near a live conductor, the electric field influences the electric charge. It triggers an indication; it could be LED light or sound.

Fluke Voltage Tester

Fluke voltage testers are known for precision and reliability. A two-pole tester ideal for voltage and continuity checks. You need to simply touch the tip of the circuit or device under the test.

A live circuit will cause the tip to glow red, and there is a sound alert also. Its simplicity and effectiveness make it a favourite choice. Get top-quality voltage testers from Voltage Tester manufacturers in india.

Non-Contact Voltage Tester

It is a handy, and safe device to check the voltage presence. The tester does not need to make direct contact with the wire or outlet. The tester indicates voltage presence by light or sound when brought near a live conductor.