First of all, adjust the internal high-frequency oscillator frequency, adjust to the low frequency 50Hz, change the time base frequency of the resistance and capacitor, which increases the value of the resistance and capacitor, so that the frequency of charge and discharge is slower, and reduce the frequency of alternating conduction.
Then change the original ferrite high-frequency magnetic transformer to the core transformer of silicon steel sheet, according to the power size of the inverter to choose the specifications of the core, the power of the core is also large, because the 50Hz coil is more, the turn ratio is also large.
It is produced by a professional sine wave inverter chip that outputs 220 volts AC through an lc filter circuit that generates 50 Hertz AC sine waves