[AMRadio] Power Supply Question

[Kim Elmore]

I wish to avail myself of the knowledge here: My Dad, W5JHJ, has a WRL 
Globe Champion 350 and is the original owner.  He's maintained it and it 
works well, but I wonder if a mod he made years ago was a good one.  Like 
most AM transmitters, it uses a choke-input PS design.  I cannot recall the 
input choke values, but do recall that it incorporates a swinging choke and 
that the filter capacitor was originally quite small (2 uF, I think). that 
capacitor failed some time ago, and as I was looking at his documentation 
saw that he'd replaced it with something like 40 uF.

On the list, I recall scrolling across a few postings (now lost) that said 
something about how these PS should be designed. There, I thought I saw 
something along the lines of it being possible to have too much filter 
capacitance.  Did I get that right?  If so, what's the symptom of too much 
filter capacitance in a choke input filter?

Kim Elmore, N5OP
                           Kim Elmore, Ph.D.
                        University of Oklahoma
         Cooperative Institute for Mesoscale Meteorological Studies
"All of weather is divided into three parts: Yes, No, and Maybe. The
greatest of these is Maybe" The original Latin appears to be garbled.