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Re: [PSUBS-MAILIST] Rudder position indicator

Sorry - the technical level of this list is so high that I assumed people would know these, especially since they are pretty common now. For everybody else's benefit, the Hall effect sensor takes advantage of the redirection of an electrical current in the presence of an external magnetic field. The sensor is entirely solid-state, so should be very reliable under pressure. 

Marc

Alan James wrote:

Hi Marc,
Had to look up what it was on Wiki
http://en.wikipedia.org/wiki/Hall_effect_sensor
I knew them as proximity sensors.
I wonder wich would be the most reliable or cheapest?
I had a dive torch with a magnetic switch that wasn't that reliable,
& potting the Hall effect sensor seems easiest.
Alan
----- Original Message ----- From: "F. Marc de Piolenc" <piolenc@archivale.com> 
To: <personal_submersibles@psubs.org>
Sent: Saturday, November 21, 2009 3:07 AM
Subject: Re: [PSUBS-MAILIST] Rudder position indicator
Better yet, Hall-effect sensors. No moving parts - can be completely potted - should last forever. 



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