| 摘要 |
<p>An inverter power supply circuit for automatically selecting AC 110/220 voltage inputs. An automatic voltage selector controls a number of relay contacts such that two primary coils of a high frequency and high voltage transformer in a power exciting circuit are connected in parallel to each other when AC 110 voltage input is supplied; and the two primary coils are connected in series to each other when AC 220 voltage input is supplied. The output of a microprocessor is compared with the output of an input current sensor so as to provide the output therefrom to the power exciting circuit. <IMAGE></p> |
