You need to run AC not DC through the probe if your looking for
reliability

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Dave Dilatush
Sent: Monday, June 14, 2004 11:22 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE:] Oscillation on comparator circuit


mike wrote...

>I am trying to use a LM339 comparator to tell me when two probes are
shorted by water.  I have one probe connected to Vs

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