I stand corrected
David C. Wilker Jr.
USAF (RET)
----- Original Message -----
From: "Eric" <huffy340@gmail.com>
To: <dakota-truck@dakota-truck.net>
Sent: Sunday, September 14, 2008 5:05 PM
Subject: Re: DML: Engine Dies and Restarts
>
>> A Hall effect switch is a small coil of wire. As a magnet
>> (reluctor tooth) passes near it, the magnetic field from the
>> magnet induces a small amount of current in the coil.
>
> Whoops, that's not a hall effect sensor. Hall effect sensors use a
> semiconductor to detect magnetic fields instead of a coil. You
> could run a current through a coil, and use a hall effect sensor to
> detect the magnetic field from the coil.
>
> Hmmm, I can't remember if there's a particular name for the coil
> type other than pickup coil or inductive pickup.
>
> As a side, a cool thing about hall effect sensors is that they can
> detect static magnetic fields. This allows measurement of DC
> current, for example.
>
> eric
>
>
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