Power supply, has control circuit for controlling single interface, and conversion control circuit for controlling direction of input voltage based on determination of input voltage in alternating current/direct current detection circuit

摘要

The supply has a control circuit (4) for controlling a single interface (3) that is utilized by an alternating current-direct current circuit (1) and a direct current-alternating current circuit (2), simultaneously. The control circuit comprises an alternating current/direct current conversion circuit (42) that selectively guides alternating current or direct current. A conversion control circuit (43) controls direction of input voltage based on determination of the input voltage in an alternating current/direct current detection circuit (41).