SWITCHING POWER SOURCE

摘要

PURPOSE:To eliminate a separate transformer by winding a pulse pickup winding by a highly insulated wire of a flyback transformer to supply a horizontal pulse for synchronization to a switching power source circuit. CONSTITUTION:A pulse pickup winding 13c is provided by a highly insulated wire in a core of a flyback transformer 13. The horizontal flyback pulse obtained at the winding 13c is supplied as a trigger pulse to a switching drive circuit 3 of a switching power source circuit 1, thereby synchronizing the switching operation with the horizontal deflection movement.