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Old October 10th 11, 09:14 PM posted to
Phil Kane Phil Kane is offline
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First recorded activity by RadioBanter: Jan 2007
Posts: 300
Default Power supply noise reduction techniques.

On Mon, 10 Oct 2011 12:27:49 -0700, Phil Kane

Does this seem like a practical approach and how would I go about it
and still allow the anti sulphation pulses to reach the battery.

Based on my own experience:

1. Bypass the charge controller - it won't hurt the battery if done
for a short time. Then you will see if it is in fact the device or

2. If it is the device, sayonara - put it on eBay and get a
unified full-capacity regulated charger with known low- or no-noise
characteristics and designed for the specific type(s) of batteries to
be floated.

The one that I use is the Precision Dynamics PD-9260 60A "smart
charger" made for my AGMs with no problem. It will also run the rated
load without a battery, It's intended for RV applications so the
price is a bit high, but then again you get what you pay for.

(I don't own stock in Precision Dynamics....)

I forgot to add:

Before I went to that approach I tried hanging 32,000 uFd of
capacitance where you would have the RigRunner input. It didn't help.
The pulses designed for the battery would ride into the RigRunner as
well because there's no isolation between the output of the charge
controller and the RigRunner input. Even if there were, experience
teaches us that noise has a habit of finding "sneak paths" into
equipment, usually in ground loops connecting them.

73 de K2ASP - Phil Kane

From a Clearing in the Silicon Forest

Beaverton (Washington County) Oregon

e-mail: k2asp [at] arrl [dot] net