Pot value changes: What will it do?

[Ripthorn]

I have been looking at some projects that call for 22k and 220k pots, but can't find them at my regular supplier.  They do have 25k and 250k, so can I use those and what effect will they have?  Are these values too large of changes?  Thanks.

[zyxwyvu]

I have been looking at some projects that call for 22k and 220k pots, but can't find them at my regular supplier.  They do have 25k and 250k, so can I use those and what effect will they have?  Are these values too large of changes?  Thanks.

Those changes are pretty small. My guess is that it will work fine.

[petemoore]

I have been looking at some projects that call for 22k and 220k pots, but can't find them at my regular supplier.  They do have 25k and 250k, so can I use those and what effect will they have?  Are these values too large of changes?
  The 'general rule' is +/-10% tolerance is fine.
  Case specific...buncha math, but ballparking says these values are good.
  With pots, sometimes you can just 'fudge' it, other times you can trim the value[ with a resistor across 1 and 3 or with 2 resistors...1 from the wiper to each outside lug..get the DMM out or just figure...ballpark, adjust etc., go too big and have an uneven sweep that gets the R value you need [say for 2 lug pot wiring as variable resistor.
  A three lug pot wiring assigns the pot for use as a voltage divider or resistive divider.

[Ripthorn]

I guess I will just give it a go and if it seems a little funny, I will try the resistors trick you mentioned Pete.  Thanks for the input.

[petemoore]

so can I use those and what effect will they have?
  I should have adressed this more completely by saying when dealing with less than two of the three variables, it is impossible to say.
  Posting a schematic where the component application is shown allows the wanted determinations to be made.
 
  You know the resistance needed and what you have falls within the '+/- 10% tolerance rule', these values will very probably fit the application perfectly.
   http://en.wikipedia.org/wiki/Ohm's_law
   

[Ronsonic]

Pots typically have a 20% tolerance. Your selections are more like 10%. You'll be fine.