[sdiy] making a 100k pot act like a 10k

[William Berzinskas]

well.. i'm using them in a midi box controller. the pots seem to jitter a bunch.. i tested with the recommended 10k and it's fine..  i guess it's pulling to much power when i have some more then a few knobs already drawing power..  
  ----- Original Message ----- 
  From: Scott Bernardi 
  To: synth-diy at dropmix.xs4all.nl 
  Sent: Monday, December 13, 2004 8:08 AM
  Subject: Re: [sdiy] making a 100k pot act like a 10k


  William Berzinskas wrote: 
    as the sub says.. how can i make a 100k pot act like a 10k? i have  a bunch of pots and a bunch of free time.. and not much money..   so, anyone? 
  That depends on the application. If you are talking about using it as a voltage divider, you only need to be considered about the loading effects of whatever resistance is hanging off it. If you want it to act like an audio taper, you can purposely put an "excessive" load on it. If it's going to be used as a gain element in an opamp feedback loop, you can change the other gain setting resistor and still get the same gain.
  Here's an article on pot substitution:
  Pot and trimpot substitution
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