Dimmer Dot Variable Transformers

The "Dimmer Dot" is a Variable Transformer and provide continuously adjustable voltage A.C. supplies. In its "Auto Transformer" from (type-D, as manufactured by Green Dot Electric Limited), it is an efficient, reliable method of controlling A.C. voltage from zero to line voltage by amplitude modulation of the A.C. waveform. Since the Current, Power, Heat, Light and Motor speed are further functions of the voltage, the "Dimmer Dot" Variable Transformer finds its varied use.