Re: [CAD_CAM_EDM_DRO] Power supply

Raymond Heckert wrote:

>Perhaps, try to feed into a half-wave bridge instead of full-wave. I'm
>thinking the reduced duty-cycle will drop your voltage at the capacitor.
>Maybe have to add a 'bleeder resistor'. Just make sure the diodes can take
>the extra surge curent that will be demanded.
>
>

This may not be a good idea. You almost have to have unbalanced DC in
the transformer
secondary when you do this. It will cause the transformer iron to
saturate on one half-cycle
of the mains waveform. On small stuff like wall-warts, you can easily
get away with this,
but on sizable transformers, you get into serious trouble. They will
buzz loudly, and start
to pop breakers. You can actually pop the high-tension fuse on your
pole transformer
this way, although it would take a multi-KW load to unbalance the pole
transformer that
badly.

Jon