warning lamp with Euro lights

[larry C leung]

It would take a heck of a lot of turns...

the Physics Teacher

On Tue, 13 Nov 2001 20:59:59 +0000 (GMT) =?iso-8859-1?q?mike?=
<mikemk40 at yahoo.com> writes:
>Anybody thought about putting a couple of turns of the
>headlight wire round a reed switch and using that as
>an input to the lamp monitor?
>
>mike
>
> --- Phil Payne <quattro at isham-research.com> wrote: >
>> Theory: Current would be measured very simply by a
>> coil around the wire -
>> > the coil wire should have some voltage when
>> current flows through the
>> > headlight wire.
>>
>> Bad theory.  You will only get a current in your
>> coil when the current in
>> the wire _changes_.
>>
>> --
>>   Phil Payne
>>   http://www.isham-research.com
>>   +44 7785 302 803
>>   +49 173 6242039
>>
>>
>
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