Single Layer Variable Autotransformer

Radiotone 0.5 A, 0.75 A, 1.2 A Single Layer Variable Autotransformers (colloquially known as Variac) are very small in size (82 mm Dia) Variable Autotransformers.  In same size we can also make from 0 to 25V at 5A or 0 – 50V @ 3A and for 400 Hz applications. Radiotone 0.5 A, 0.75 A, 1.2 A Single Layer Variable Autotransformers (colloquially known as Variac) are used in Instrumentation, HV Testers & Aviation (400 Hz).  All the models are coated for physical protection as shown in the picture.  We use Roller brushes for very smooth long lasting & arc free contact.