MicroVAX II

From: Jochen Kunz <jkunz_at_unixag-kl.fh-kl.de>
Date: Sun Nov 24 03:29:00 2002

On 2002.11.24 01:20 Antonio Carlini wrote:

> I believe the problem is that the wires are of differing lengths
> and hence resistance.
Yes. I have seen a toasted BA23 power harness...

> The end result was that the longest wire
> (greatest resistance) heated up the most and eventually went phut,
No. The wires are connected in parallel. They have different lengths and
thus different resistance - the longer the higher. "Current allways uses
the way of lowest resistance." So the shortest wire has to carry a
higher current than the other wires. The wire can carry this higher
current, but the connector can't. So the _connector_ heats up and "the
magic blue smoke escapes"...
Solution was to use equal length wires (=equal current distribution
among wires/connectors) and better connectors that can carry higher
current.
-- 
tsch??,
         Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
Received on Sun Nov 24 2002 - 03:29:00 GMT

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