HIGH SPEED POWER CUT-OFF CIRCUIT OF A POWER SUPPLY DEVICE

摘要

A circuit for blocking a high speed power of a power supplier is disclosed. A load is derived by the voltage excited at the secondary coil of the transformer(13). A control signal at a controller(16) is generated according to the voltage applied to the load. The transformer(13) is operated by switching a switching unit(15) according to the control signal. In case that the inputted current power is smaller than the voltage inputted to the controller(16), the operation of the controller is stopped. Thereby, the voltage applied to the load is abruptly blocked.