Abstract: A magnetic chuck control system employing solid state circuitry including a power output circuit adapted to apply a DC voltage to an object such as a magnetic chuck or the like so as to magnetize the same. The power output circuit employs a triac reversing circuit and is interfaced with a digital control circuit and a digital-to-analog converter circuit so as to apply alternating polarity voltage signals of successively reduced magnitude to the chuck during a demagnetizing operation. All high voltage is confined to the power output circuit so as to provide significant safety protection to the operator.