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Subject: Re: Low voltage comparator

Date: 05/25/02 at 8:12 PM
Posted by: Russ Kincaid
E-mail: russlk@yahoo.com
Message Posted:

In Reply to: Low voltage comparator posted by J Campbell on 05/25/02 at 7:10 PM:

It is easy to tell when the voltage is higher or lower than a reference, but there is a problem in trying to tell when the difference is zero: The difference will not be zero long enough that anyone can see a LED light. If you set a band around the reference, then two comparators and an AND gate will do the job.


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