Moe2255 said:
This may be a silly question, but I want to get my circuit right with little errors.
If a circuit calls for a 471 uf capacitor, and the only thing I can find available is a 470uf, would 1 uf make a difference, or would it be OK to use the 470? The circuit in question is the FM Telephone Bug.
Electrolytics are usually +/- 25%, so you wouldn't get one specified as 471uF. I suspect what it says is just '471' - this means '47' + one '0', which is 470pF. A 472 would be + two '0', 4700pF. It's a common method of labelling small capacitors.
No disrespect Styx! - but 470uF to 471uF is only a difference of just over 0.2% - they don't make components approaching that accuracy