| 摘要 |
<p>PURPOSE:To cut the system of a circuit-side which is unrelated to the saving processing of a power cut so as to prolong time when the power cut of AC power affects the power cut of DC power by dividing a power system supplying power to a device into two systems and controlling supply and cut. CONSTITUTION:When AC power (AC) 1 is turned off, a DC power system 101 is immediately turned off, and the output of a DC power system 100 becomes an off-state delayed by a prescribed time. When a low voltage detection signal 104 is inputted to a partial power supply/cut control circuit (PWC) 6, PWC 6 sets the output of the DC power system 101 to a cut state after a prescribed time elapses. When the power cut of AC 1 is restored, the DC power systems 100 and 101 become an on-state. Then, an interruption control circuit 9 inverts a switch 4 by the processing of a processor 19 after a prescribed time elapses so as to set the system in a power supply state, and the outputs of the DC power systems 100 and 101 are supplied to all circuits in an information processor.</p> |
