Date: Mon, 07 Apr 2014 15:54:19 +0100
From: Steve <g8gsq72@gmail.com>
To: amps@contesting.com
Subject: Re: [Amps] HF2500 Power Supply Caps
Make sure your transformer is up to it - big caps can mean higher peak
currents and more I^2xR in the windings.
Steve
## I thought the same thing. I used PSUD to see the results with various
values used.
In actual usage, there is no issue.....provided the xfmr is the low Z type,
which most are. The ones that heat up a bit are always the high Z
types..... made for choke input supplies.
## Using PSUD, you can look at both the peak value of each pulse...and also
the duration. Years ago, I went through this with the late Peter Dahl. He
told me
I could use as much C on his xfmrs as I could. He was correct
I didnt see any increase in xfmr heating when the 200 uf caps in one of my Drake
L4B supplies was supplemented externally with 8 x 2300uf caps.
Jim VE7RF
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