Path: utzoo!mnetor!ghp!jim
From: jim@ghp.UUCP (Jim Stewart)
Newsgroups: sci.electronics
Subject: Re: Hall Effect Sensor
Message-ID: <859@ghp.UUCP>
Date: 26 Jun 91 16:55:49 GMT
References: <1991Jun24.232559.3004@helios.physics.utoronto.ca> <16869@ganymede.inmos.co.uk>
Reply-To: jim@ghp.UUCP (Jim Stewart)
Organization: Gellman Hayward & Partners Ltd.
Lines: 20

Kevin Cameron writes:

>|>	You can buy packaged fluxgate magnetometers the
>|> the magnetic field strength along each axis, for about $3000. That

>I'm sure you're right about it working, but $3000 seems a bit expensive
>compared to an ordinary magnetic compass.

I agree...
The autopilot in my boat costs about $900 CDN.  It uses fluxgate technology,
and with the $900 CDN you also get a waterproof control box, large servo motor,
and the mechanical stuff to tie it all together.  It has +/- degree controls
so it must be fairly sensitive, although it just works relative to
the last position, not absolute with respect to the earth.

I would be curious as to where to find just the sub-assembly.
-- 
Jim Stewart, VE3SRJ
UUCP:  jim%ghp@mnetor.uucp
BELL:  (416)862-0430