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PeterD PeterD is offline
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Default Detectron Geiger Counter

On Sat, 24 Apr 2010 09:02:32 +0100, "N_Cook"
wrote:




Jeff Liebermann wrote in message
.. .
On Fri, 23 Apr 2010 10:38:23 -0700, "Chris F."
wrote:

Schematic of the DG-9 model:
http://www.curtcass.com/detectron/dg9-sch.jpg
Probably quite similar to the DG-7.

I'll stand on my comments that your clip lead and external power
supply kludge is probably causing problems. Find some suitable
electrolytics and place them across where the battery would normally
connect. The idea is to reduce the impedance that the counter sees in
the direction of the power supplies. That should reduce the
motorboating (oscillation).


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# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
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Does USA "kludge" = UK "bodge" ?


Yes...