automated variac o0-220Vac

Discussion in 'The Projects Forum' started by missk, Aug 12, 2011.

  1. missk

    Thread Starter New Member

    Mar 3, 2011

    I need to use an Atmega MCU to vary the voltage from 0-220Vac on the primary of a 220V//2000V transformer. I was looking into using a stepper motor to control a variac using a pulley/belt system. But considering that this is only a part of the bigger picture, it seems complex as I need to take into account torque considerations and such.Any chance that somebody may have a better or different idea?