Re: [Repeater-Builder] Fan audio

[Kevin Custer]

Ken Arck 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 The Micor supply and repeater are well filtered, better than most.  Where the problem lies is folks using an Astron and the capacitance isn't big enough or the equipment is more susceptible. Kevin Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/   To unsubscribe from this group, send an email to: [EMAIL PROTECTED]   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.