Filter circuit schematic diagram

Filter circuit schematic diagram

Schematic diagram of the filter circuit . After the AC 220V voltage is input to the circuit through the plug-in SC901, it is filtered by the filter capacitor c90l,
the mutual inductance filter L)oi, and the filter capacitor C902, and then sent to the bridge rectifier stack D901. After being rectified by D901, a DC
voltage of about 300 V is output. That is, there should be a DC voltage of about 300 V on the filter capacitor C908 , and this DC voltage is added to the switching oscillation circuit.