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Capacity Measurement

 
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deniska_gus



Joined: 11 Jul 2006
Posts: 42
Location: Minden, Germany

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Capacity Measurement
PostPosted: Tue Mar 06, 2007 4:19 pm     Reply with quote
Hi guys!

I would like to know, is it possible to measure a capacity of C with a PIC? How should it work. It have to be as precisely, as possible. Any ideas?

Regards. Dennis
SherpaDoug



Joined: 07 Sep 2003
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Location: Cape Cod Mass USA

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PostPosted: Tue Mar 06, 2007 5:20 pm     Reply with quote
Do you mean the Capacitance of a Capacitor? If so I would start with Microchip Application note AN512 which is about measuring resistance with an RC circuit, but it can measure the capacitor just as well as the resistor. The code in the App note is in assembly, but the flow chart will work fine for C.
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Humberto



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PostPosted: Tue Mar 06, 2007 5:21 pm     Reply with quote
You will find a good info to start with, in an old AN from Microchip:

http://ww1.microchip.com/downloads/en/AppNotes/00611b.pdf


Humberto
deniska_gus



Joined: 11 Jul 2006
Posts: 42
Location: Minden, Germany

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PostPosted: Wed Mar 07, 2007 2:53 am     Reply with quote
Thanks, i'll try it
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