[Elecraft] Oscillating Lab Power Supply

[Richard W. Solomon]

Or, you could go over to that "auction" place and buy a real power supply, 
like Kepco or Lambda or ... (one marked ..."Made in U.S.A."...). 
If you want the "Cadillac of the Industry, find a Krohn-Hite.

73, Dick, W1KSZ

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Scott
Ellington
Sent: Friday, April 01, 2016 6:11 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] Oscillating Lab Power Supply

The other day, I was testing my new KX-1 with one of these power supplies:

http://www.amazon.com/Mastech-HY3005D-Variable-Linear-Supply/dp/B000E14F56

It caused some awful garbage to come out of the KX-1, which was caused by
the power supply oscillating and generating a bunch of 120 Hz ripple.
They're sold under several brand names, and there are several versions, all
basically the same.  I'm guessing I'm not the only one who was attracted to
their low price.

The fix is easy, though it took most of the day to figure out. Contact me if
you need it.

73,

Scott  K9MA

--
Scott Ellington  K9MA
Madison, Wisconsin, USA

k9ma at sdellington.us

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