/diy/ - Do It Yourself

When a transformer specifies "240V in, 12V out" is that 240Vrms and 12Vpeak? That factor of 1.414 makes a difference. I'm thinking of simply buying a cheap mains transformer and using it as a flyback transformer.

Also if the voltage gets too high on the end, since I want to keep it AC, can I just put two Zener diodes facing opposite directions in series across the output? I think the shorting will help stop the ability of the transformer to act like a current source, though I'm not sure. I'm only putting a square wave in, how high could the voltage get over the coils ratio*Vin?

Also just gonna leave this here...