On Apr 20, 12:18?am, "Ross Tucker, NS7F" wrote:


A little over a year ago, I posted a request for help (1) in designing
a circuit to get 300VDC out of a power supply that was pumping out
~520VDC.


Let's start at the beginning.

You have a power transformer and a rectifier, followed by a C-L-C
filter (aka capacitor input). And you're getting a bit over 500 VDC
from it.


1) What rectifier circuit are you using?


a) full-wave center-tap
b) full-wave bridge
c) voltage doubler
d) some other type (specify)


2) What sort of rectifier(s) are you using?


a) High vacuum diodes (5U4G, 5Y3GT, 5R4GY, etc.)
b) Solidstate silicon diodes (1N4007, etc.)
c) some other type (specify)


3) What are the transformer ratings, part number, etc.?


4) Which of the listed transmitters have you built?


73 de Jim, N2EY