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 Forum index » DIY Hardware and Software
Pot with parallel resistor
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Uncle Krunkus
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PostPosted: Fri Oct 27, 2006 3:43 am    Post subject: Pot with parallel resistor Reply with quote  Mark this post and the followings unread

Here's a simple spreadsheet for anyone who's wondered what would be the effect of putting a parallel resistor across a variable resistor. I always assumed it would produce a non linear relationship, but it wasn't until I did this spreadsheet that I realised that the amount of non-linearity was dependant on the ratio of the two values.
It could be handy for when you want to use another value of pot.
I might improve it later to include graphs of other circuits, log pots etc.


Pot-Parallel-Resistor.xls
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fluxmonkey



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PostPosted: Fri Oct 27, 2006 6:56 am    Post subject: Reply with quote  Mark this post and the followings unread

nice! also see:

http://sound.westhost.com/pots.htm
http://www.geofex.com/Article_Folders/potsecrets/potscret.htm

bbob
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bugbrand



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PostPosted: Fri Oct 27, 2006 10:16 am    Post subject: Reply with quote  Mark this post and the followings unread

Both posts = mighty useful ---- THANKS!
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fonik



Joined: Jun 07, 2006
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PostPosted: Fri Oct 27, 2006 2:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

and what about that:
http://www.mindspring.com/~clist/PotGraph.html
and that
http://www.elby-designs.com/documents/tailoringpotentionometers.pdf

a pot is a pot is a pot?

cheers,
matthias
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