WORKING CONTROL CIRCUIT OF MICROWAVE OVEN BY FAN LOCK

摘要

PURPOSE: A working control circuit of a microwave oven by a fan lock is provided to prevent an accident by intercepting the source of electricity of the system when a motor working maintains the stop state and increase safety reliability of the system. CONSTITUTION: The working control circuit of a microwave oven by a fan lock comprises:a micro computer(11) outputting a signal for driving a fan motor directly; a switching part(22) installed in one side pot of the micro computer and controlling the driving of the fan motor; a contacted detecting part(14) that has a perceiving part(20) detecting the change of driving voltage when the fan motor driving starts from the switching condition of the switching part; a relay driving part(12) controlled by the output signal of the detecting part.