| 摘要 |
A power supply control circuit has an input unit which receives a supply of a power supply from one or a plurality of power supply source apparatuses, and has plural input lines including a first input line and a second input line at least, an output unit which outputs the supplied power supply to a power supply destination apparatus, a current control unit which is arranged between the first input line and the output unit, and includes a first diode D 1 and a field effect transistor FET which are connected in parallel, a connection detection unit which is arranged between the second input line and the current control unit, detects a state of supplying the power supply to the second input line, and controls the field effect transistor FET and a second diode D 2 arranged between the second input line and the output unit.
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