[Amps] OM power power supply design

[Ron Youvan]

> Last night I came across these schematics from OM Power.

> They use 8 250v  windings, rectified, in series. Seems ingenious as
> that would lower the costs for the transformer, and it makes the use
> of toroidal cores an option.

   This design (old) has the advantages of using 1 kW diodes and 300 Volt capacitors and 
if a diode shorts and blows it's fuse, the remainder of the power supply keeps operating 
at the reduced Voltage.  The windings all need to be insulated for over 2 kV.  I don't see 
where the transformer would be cheaper, every "Voltage level" would need to be insulated.
"toroidal cores an option" ???  This design could be produced with 8 identical 
transformers (or 4 with two windings each) of any style.

> What would be the drawbacks of copying such a design? Should each of
> the windings deliver the required current or should there be a safe
> margin?

   Users choice, the greater the Ampacity the lower the impedance and better the load 
regulation.
-- 
    Ron  KA4INM - I'm proud to be Chuck's pop!