[HomeBrew] High current 12 Volt linear power supply?

[Ray LaRue]

Having a lot of trouble trying to tame the RFI coming from an MFJ-4275MV 
power supply every 20KHz or so, used to power my ALS-500M amplifier. 
Done all the normally recommended things with multiple ferrites, etc., 
on all the cables both in and out. Reduced the RFI some, but no dice.

I have a suitable heavy duty transformer taken from a broadcast 
transmitter and think I would like to build a linear supply for the 
amplifier. However searching thru all my handbooks and other references, 
I don't find any current design help for a high current modern regulator.

Looking for any assistance which would help design/build a series type 
MOSFET regulator for a linear 80 amp, 13.8 volt supply. Thinking a 
MOSFET regulator system would be more efficient, but maybe not.

Your attention is appreciated.
Ray, W4BYG

-- 
They say a smart person learns from their mistakes.  A
wise person learns from the mistakes of others.



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