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Re: DIY 5X9v bat phantom supply (was low voltage DC phantom

Subject: Re: DIY 5X9v bat phantom supply (was low voltage DC phantom
From: Mike Feldman <>
Date: Sat, 26 Nov 2005 11:46:11 -0600
Rob Danielson:

> ... I'll try to pull the collective insights together...

I bought a bunch of the 9v battery connectors and
hotglued 6 of them into a housing and wired them
in series.  5 alkalines and another shorted connecter
give you adequate voltage when the batts are fresh.
Six connectors lets you use NiMh rechargables that
don't generate full voltage.

You'll want a good battery tester that actually
draws some current (not just a voltmeter) to weed
out the weak cells.  One cell going bad renders
the other 4 or 5 useless.

-- Mike


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