[sdiy] Power Supply Design Questions

[Ingo Debus]

Scott Gravenhorst wrote:
> Ok, maybe a silly question... I have a couple of 1200ma 16 volt
> transformers, (technically wall warts, but these are big and heavy). 
> Anyway, 16 volts is really too high for what I want.

If you want 12V output voltage from the regulator, a 16V transformer 
seems just fine to me. I wouldn't go below 15V transformer voltage 
when I want 12V regulated output.


> 
> I clipped together a 1/2 wave rectifier and I see 24 volts.  I'd like to
> use this with 12 volt regulators.  It seems like these transformers
> aren't going to cut it.

But the 24 volts are without load, yes?

Ingo