Hall sensor

[Ade + Lamb Chop]

At 09:47 20/03/00 -0800, Carter Shore wrote:
>An FYI, just in case, since it was not specifically
>stated. Hall effect sensors change state when magnetic
>field density reaches an internally set threshold.
>
>So make sure you use a ferrous metal to interrupt a
>biasing magnetic field (reluctor), or magnets.
>Some Hall sensors are built with magnet already in the
>package, easy to check with a piece of steel.
>
>Hate for anyone to go to the trouble of machining a
>shutter or timing wheel in aluminum, only to see it
>not work properly.

So Hall effect sesors don't need a magnet on the thing that is moving? It
just has to be ferous...

Ade

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