Hi to everyone on DIYSMPS!
I want to make SMPS substitution for 230 VAc VARIAC (regulated autotransformer from 0 to 300 Vac) with some kind of buck-boost SMPS converters - one for positive half of mains voltage and one for negative half of sinusoidal mains voltage or to make this device with two PFC converters without output electrolytic cap, one for positive and one for negative half of input mains voltage 230 Vac / 50 Hz.
Is somebody has the schematic for this purpose, I suppose it is cheaper way to get regulated mains voltage, rather than big autotransformer...
I want to make SMPS substitution for 230 VAc VARIAC (regulated autotransformer from 0 to 300 Vac) with some kind of buck-boost SMPS converters - one for positive half of mains voltage and one for negative half of sinusoidal mains voltage or to make this device with two PFC converters without output electrolytic cap, one for positive and one for negative half of input mains voltage 230 Vac / 50 Hz.
Is somebody has the schematic for this purpose, I suppose it is cheaper way to get regulated mains voltage, rather than big autotransformer...