| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid the situation that a standby state exhibits only for a predetermined time at a power supply shut-off generation time even if it is a configuration that a start signal for starting a main power supply circuit is given intermittently. <P>SOLUTION: A power supply device 12 with a standby function includes the main power supply circuit 15 having a power supply unit 18 for supplying a power to a control circuit 11, and a standby power supply circuit 14 having a detector 16 for controlling the start/stop of the power supply unit 18 based on the start signal to be outputted intermittently in the state that the power supply output is necessary from the power supply unit 18. A starting circuit 19 provided in the main power supply circuit 15 starts to operate the power supply unit 18 before the starting circuit 17 provided in the standby power supply circuit 14 starts to operate the detector 16 when the power supply is started from a power supply terminal 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
