Rimba 458 series induction cooker auxiliary power supply schematic diagram

AC 220V 50/60Hz voltage is connected to the primary coil of the transformer, and the two secondary windings generate 13.5V and 23V AC voltages respectively. The 13.5V AC voltage is rectified by a bridge rectifier circuit composed of D3~D6 and filtered by C37. In addition to being supplied to the cooling fan, the DC voltage VCC obtained on C37 is also stabilized by the IC 1 three-terminal voltage stabilizing IC and filtered by C38 to generate The +5V voltage is used by the control circuit. The 23V AC voltage is rectified by the bridge rectifier circuit composed of D7~D10 and filtered by C34, and then passes through the series voltage stabilizing filter circuit composed of Q4, R7, ZD1, C35, and C36 to generate +22V voltage for IC 2 and IGBT excitation. circuit use. Rimba 458 series induction cooker auxiliary power supply schematic diagram :