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From: Jim Richardson
Subject: Re: (Avionics) How can this circuit produce an "inductive surge"?
Date: Fri, 27 Sep 2002 10:34:16 -0700
Organization: Erisian claw
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
Reply-To: Jim Richardson
User-Agent: slrn/0.9.7.4 (Linux)
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On Fri, 27 Sep 2002 07:56:01 +0100,
> Mike Poulton wrote
>>>>> How much of a collapsing field would it take to generate say 20V
>>>>> across say 6" of wire?
>>> Not much, if it collapses quickly enough. Use Faraday's induction law:
>>> f -d ff
>>> O e dl = -- || B dA
>>> j dt jj
>>> I always wanted to try to do that in ASCII!
>>> Details of the calculation are left as an exercise for the student.
>>ASCII path integrals! I've never seen that one before...
> I think if this was the complete answer, manufacturers would simply
> avoid routing wires near the starter motor and we would not have to
> follow the startup/shutdown procedures.
Where? there's only so much room in the engine cowling
> I've seen qualitative answers only so far, regurgitating stuff from
> the standard texts on the subject, but nothing that answers the
Your question was answered adequately.
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