Variac variable auto transformer manufactured by constant power private limited is provided together with ac control voltage controls that offer continuous ac voltage supply. Variac ensures a distortion free output that is perfect for sensitive electronic appliances and equipments in residential areas and industries. Manufactured with cutting, Edge technology, These auto transformers ensure a consistent linear regulation of ac voltage to offer exceptional output and negligible waveform distortion. It is suitable way of controlling current, Light, Heat and motor speed with a voltage factor. This transformer finds its wide applications in auditorium, Hotels, Conference hall, Laboratories, College & universities, Welding equipments, Servo stabilizer, Rectifiers, Battery charger and testing instruments. Advantages can enhance the output voltage in excess of twice the input voltage. Any desired voltage within the maximum variety may be obtained by adjusting the carbon brush. Low temperature rise. To supply the the core, Same kva material required is considerably minimal compared to a bank of three single phase transformers. Transportation is easy and also transportation cost is less.