[Elecraft] Re: RS 50 supply

[Ron D'Eau Claire]

Ken, AA7JC wrote:

I know of a Broadcast engineer K6AER in Colorado who happily uses a DPS-75
(13.8VDC 75 amp) for all his 13.8V ham radio needs.  So it is probably
pretty clean.

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Ken raises a very good point about some DC supplies. They MAY get very noisy
at low current loads! Some supplies that were purpose-designed for various
gear depend upon a certain minimum current load for proper regulation and
filtering. Using such a supply at a small fraction of its rated load may
result in a lot of noise on the DC line and even poor regulation, depending
upon the design.

The Astrons and the like us Hams usually buy were designed to deliver clean
DC from virtually zero Amps up to their full rated output, but that's not
necessarily true of any DC supply.

Ron AC7AC