Thanks, this makes sense to me, I'll try it.
It is a portable repeater so I would like the fan to run off of the same DC supply as the rest of the rig. Paul
Ken Arck <[EMAIL PROTECTED]> wrote:
Ken Arck <[EMAIL PROTECTED]> wrote:
At 02:22 PM 4/9/2004 -0400, you wrote:
>Either run AC fans or use a different power supply than the one running
>your repeater to power those DC ones....
<---I'm running two 12 Vdc fans in my Micor repeater. I use a 200 uh choke
in each lead (+ & -) and a 1000 mf cap across them, on the supply side. I
then use a transistor to control 'em and I have absolutely no noise
whatsoever using this scheme.
I suspect part of the problem is that most people forget to treat both
supply lines and noise gets introduced due to ground loops and stray currents.
Ken
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