[Milsurplus] O.T. Power Supply Design

[Kenneth G. Gordon]

On 20 Sep 2015 at 21:25, antqradio at sbcglobal.net wrote:

> I can see the need.  
> If you have the choice between several different power transformers with various
> ballpark HT secondary voltages and several different value inductors and filter
> capacitors, which combination would give you the lowest ripple with the lowest
> capacitor peak charging current so that you don't over stress the full wave
> vacuum tube rectifier? You can spend a day or two breadboarding the circuit and
> drag out the o'scope and whatever other test equipment and components you need
> for the various test or you can spend an hour or so simulating the circuit with
> the various component values and then select the best combination and build the
> circuit once. Graphs and namograms may get you within 20% on a good day but a
> decent CAD program with good models will get you much, much closer on the very
> first try. Design in the cubicle and verify in the lab 'cause you already know
> it will work.

Agreed.

For the BC-348 power supply, Duncan Amps' PSU-Designer II.

I just spent an hour or two simulating a power supply with that software for a 
friend of mine. VERY time-saving!!!! Results appear to be very accurate too.

I would have spent several days attempting the same tests by doing it on the 
bench.

Ken W7EKB