Induction heating fixing apparatus and image forming apparatus with voltage and/or power level detecting

摘要

A DC circuit 110 is provided to convert the voltage of a commercial AC power supply 100 into a DC voltage having a fixed level and output the DC voltage irrespective of the level of the voltage. The rectifier circuit 110 includes contacts 117, 118 and 119 and functions as one of a full-wave doubler voltage rectifier circuit and a full-wave rectifier circuit according to the opening and closing of each of the contacts.