| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller, a control method and a power supply capable of supplying an output voltage stably while avoiding the risk of deterioration or damage of elements. <P>SOLUTION: When a first elapsed time during which the magnitude of a voltage output from a rectifier circuit 202, rectifying AC power supplied from an AC power supply 300, goes below a threshold voltage exceeds a threshold time, a controller 200 outputs a stop signal for stopping an operation of a power factor improvement circuit to a control circuit 112 which controls the operation of the power factor improvement circuit. <P>COPYRIGHT: (C)2012,JPO&INPIT |
