Subject: Re: Reducing contact resistance for low volt use?
Summary: What do you think of these ping times eh?
Reply-To: You can't see me, and I pass right through planets...
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Date: Tue, 07 Jan 2003 10:26:00 GMT
NNTP-Posting-Date: Tue, 07 Jan 2003 05:26:00 EST
On Tue, 07 Jan 2003 03:13:34 GMT, jmuchow@SPAMMENOTcamlight.com (John
Muchow) Gave us:
>I *never* said that my load is a bar of copper. The load is a MOSFET
>(part of a constant-current discharger circuit).
If you can make an electronic load, you must know what it's on
resistance is. Does that not drop to much to achieve what you want?
A dynamometer where the battery under test is the engine, and the
dynamometer is the load, a motor with a disc brake, and pressure data
from the caliper end on the torqued against side. Nice data.
Make motor too big to blow and to heavy for application, and one can
test throughout entire desired range, and beyond. Seemingly far
better than trying to take single battery readings.
Then again, a smaller motor and brake system would work fine for
single cells. It like dead shorting the secondary of a transformer,
and reading the primary data as the "load" information. To bad DC
doesn't do transformers. But stalling a motor is very similar to
transformer loading, though more abrupt.