Hall effect CV pedals (was: Volume pedals for CV discussion)

[David Halliday (Volt Computer)]

Also, the range over which these operate is very small - you would need to
gear your pedal throw down to a centimeter or so.  It could be done and
doing it with a shaped cam would allow you to have a linear output.
Interesting since it would be pretty much indestructible...

-----Original Message-----
From: John Blacet [mailto:blacet at metro.net]
Sent: Tuesday, April 06, 1999 6:52 AM
To: edusilva at bahianet.com.br
Cc: synth-diy at mailhost.bpa.nl
Subject: Re: Hall effect CV pedals (was: Volume pedals for CV
discussion)


LINEAR Hall effect sensors are a bit uncommon. The DIGITAL ones are more
common, being used for switches. Cherry semiconductor used to make a
linear version (I have a couple in the antique IC bin.)

The main problem with the linear version is that some memory device
would be req'd to be useful for a pedal effect unless a "go to zero"
output is OK when your foot is removed. They may also have some
temperature and process variations, but I have not seen the spec sheet
lately.

As far as Allegro goes, not familiar with them....
-- 

Regards.
-------------------------
John Blacet
Blacet Research Music Electronics
-------------------------
blacet at metro.net
http://metro.net/blacet/music.html