🚀 go-pugleaf

In article <103678@netnews.upenn.edu> george@mech.seas.upenn.edu writes:
>
>:Good magnetic sensors in disk drives , brushless DC motors or Car 
>:ignitions use Hall Effect sensors that provide a solid state or linear 

>my latest project needs a magnetic sensor to operate over a range 
>from 0 to 100Hz.  I think this is at best pushing the limit
>of what i can do with a reed switch.  How can i find out
>out more about hall effect devices?  A small quantity supplier,
>with data sheets would be nice..

	Newark Electronics, and Active Electronics, both stock
the Allegro line (formerly Sprague) of Hall sensors.  Some
are conditioned on-chip, some are conditioned and have a Schmitt
trigger (digital output only), and some are 'raw'.  Contact
the nearest Allegro office or representative (I have a phone
number (215) 467-5252, which should work for U.Penn.) for the
appropriate device data, and buy a few chips and try 'em out.

	John Whitmore