[Amps] Amplifier Fans:

Bruce Osterberg n9bx at mchsi.com
Sat Aug 25 14:33:25 EDT 2012


Hello:  I have Built a W6PO amplifier in a 30 Inch rack cabinet, along 
with it's power supply,(pictures available upon request.)  But I thought 
I would add some internal fans on the inside to help cool the 
transformer and exhaust a bit more air.  Well that turned out OK except 
for the Noise, (electrical that the Fans Produce.)

With out the Fans on the noise level on the K3 is right at S1 all the 
time.  Once the Fans are on it goes up to S5 and Stays there.  Mind you 
these are cheap Ham fest fans, but I don't know if adding anything to 
them would cut down on the Electrical Noise Generated.  But then as I 
think of it I may have a Problem with the Switching Power supply from 
China that I am using to provide power to the Fans.  That's easier to 
check.  But if it's the Fans, is there a solution to this delima?

73 Bruce N9BX


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