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Re: DIY 5X9v bat phantom supply

Subject: Re: DIY 5X9v bat phantom supply
From: Rob Danielson <>
Date: Sun, 27 Nov 2005 14:06:12 -0600
Understood. I could do both. I've have a battery tester (22-031
discont.) that measures 150ma @ 1.5 volts,. Has an analog meter a
little larger than 22-093's.  I assume measure each cell after it
settles five minutes or so. Do you happen to know if all of the bats
need to be in the same metal case with the other components? Rob D.

At 12:01 PM -0600 11/27/05, Mike Feldman wrote:
>Allen Cobb wrote:
>
>>  For current measurement, I still rely on my trusty old Fluke,
>...
>>  You could also read current through a small resistor, ...
>
>When I mentioned battery testers I meant something that puts
>a load on the battery as opposed to just checking open-circuit
>voltage with a high-impedence DMM.  For example, my little
>cheap Radio Shack tester (22-093) puts 80 ohms across a 9v
>batts, and 3.6 ohms across single cell batts.  An alkaline
>batt that's weak will show a high reading that will slowly
>drop into that load.
>
>-- Mike
>

--
Rob Danielson
Film Department
University of Wisconsin-Milwaukee


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