Automatically transformers (variac transformers) are used to smoothly adjust the AC voltage in various works related to electrical engineering. They are most often used to change the voltage in household appliances, construction.

Variac transformer is a type of transformer. The two windings in this device are directly connected to each other. As a result, between them there are two types of communication, one of which is electromagnetic, and the other electric. The coil has several pins with different voltage output values. The difference from conventional transformer is increased efficiency, due to partial change in power.

The use of imported instruments and equipment powered by voltage other than 220 Volt is impossible without a source of operating voltage. Variac transformer (laboratory autotransformer) with adjustment allows you to save the owners of machinery and equipment from the headache of finding a universal solution to the problem (the desired voltage), as it allows you to get 10 and 70 and 110 and 150 Volts with a slight movement of your hand, up to 300 Volts AC 50 Hz frequency of different current (up to 50 Amps) by adjusting the Variac transformer to the desired voltage. Variac transformers SUNTEK with adjustable output from 0 to 300 volts are available for different capacities.