Tnx for the responses. I'm going to try the isolation approach suggested
below. Once again, I'm amazed at the depth of my ignorance (well, not THAT
amazed).
Tnx es 73
John KK4BOB
On Wed, Nov 16, 2011 at 10:57 AM, Chip Stratton wrote:
> If you start looking for an alternative, try the TDK Lambda
If you start looking for an alternative, try the TDK Lambda LS25-15 (for
1.7A), LS35-15 (2.4A) or LS50-15 (3.4A). These are switch mode power
supplies that I've found to be fairly well shielded, light weight,
conservatively rated, and not expensive from Newark Electronics. They are
nominal fixed 15
I'm using a Powerwerx switching supply I picked up last week, testing it
out in place of my regular Astron RS-35M to run my K3/P3. So far I
haven't run into any noise issues with it, seems to be working as well
as the Astron.
73, Dennis NJ6G
On 11/16/2011 2:38 AM, Jeff Cathrow wrote:
> John, K
John, KK4BOB; the whooshing dishwasher noise you describe is coming from your
switching power supply---that's exactly what was driving me nuts until I got a
linear supply into my system. The culprit was an Astron switcher but it was
almost 15 years old when it started acting up in such a noisy
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