| 摘要 |
PURPOSE: A power supply circuit of a washing machine is provided to use a triac instead of a transformer for obtaining a low DC voltage, thereby minimizing the size of a controller part mounted in the washing machine, wherein the variable control of an output voltage becomes possible. CONSTITUTION: A power supply circuit of a washing machine includes a triac(17) connected to an AC power terminal, a rectifying element(13) connected to an output terminal of the triac for rectifying input power, a filtering capacitor(14) for smoothing an output of the rectifying element, and a control element(15) to be driven by an output voltage of the filtering element for controlling a gate voltage of the triac to control a size of the output voltage. |
