Variable Auto Transformer (Variac)

Product Description

SVS Dimmer is a continuously variable auto transformer, having a single layer winding on a Toroidal core of high grade Cold Rolled Grain Oriented Steel (CRGO). On one face of the copper winding, along the periphery, a special durable contact surface of silver coating is made. A specially designed carbon brush slides smoothly on this surface. A contact arm holding the carbon brush is fitted to the central shaft. As the control knob is rotated, the carbon brush slides over he winding and taps off a portion of the voltage across the winding. Any desired voltage with in the maximum range can be obtained by adjusting the position n the brush. The calibrated dial reads approximately the output voltage at no – load, when the is at its rated voltage.