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Subject: Re: Capacitance measurement IC
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Date: 08/13/02 at 7:08 PM
Posted by: Ray
In Reply to: Capacitance measurement IC posted by darren on 08/12/02 at 3:35 PM:
The easiest way is to: discharge the cap, apply a know current, measure the voltage after a fixed time.
That way you have practically total control of the characteristics.
Alternate ways using timing are typically cheaper these days. Time an interupt and hook up a 555.
I have done a couple of reasonably accurate and fast designs but they involve a lot of work.
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