| 摘要 |
PURPOSE: A DC supply circuit of a controller for an electric heater is provided to suppress electric wave from an electric heater by applying a DC voltage to the electric heater from the controller. CONSTITUTION: A plurality of AC/DC voltage converting units(16) converts an AC voltage from the outside of a controller into a DC voltage. A plurality of high voltage transforming units(17) transforms the DC voltage converted by the AC/DC voltage converting unit into a high DC voltage and outputs the high DC voltage to a heating plate(30). The AC/DC voltage transforming unit includes a bridge diode and is connected in parallel to an output terminal of the AC/DC voltage transforming unit. [Reference numerals] (30) Heat emitting plate |
