piclist 2001\07\25\024447a >
Thread: LM35 Woes
face BY : Mike Kendall email (remove spam text)

   My only experience with sensors is for pressure type.  In my experience
there was a circuit that sensed a depth and there were precision resistors
that would set the minimum depth and the other would set the span.  I looked
in the "programming and customizing microcontrollers" book I'm reading and
the digital thermometer experiment.  Based on this and  my experience with
thermistors in sonars, there is usually an external circuit to calibrate the
variations in actual components.  Also, I'd be curious to know if  the
measured voltage with  a DMM (usually around 10megaohms/volt sensitivity) is
supposed to be the same as the in-circuit voltage of your device which
surely would have a higher current drain? The PICmicro book warns about the
thermistor being too close to a warm microcontroller also.

{Original Message removed}
<04ce01c1149c$0b095820$0101a8c0@pavilion> 7bit

See also: www.piclist.com/techref/index.htm?key=lm35+woes
Reply You must be a member of the piclist mailing list (not only a www.piclist.com member) to post to the piclist. This form requires JavaScript and a browser/email client that can handle form mailto: posts.
Subject (change) LM35 Woes

month overview.

new search...