re making up odd resistor values required by filters in sci electronics idh nessie mcc ac uk ian hawkins writes when constructing active filters odd values of resistor are often required i e something like a k ohm resistor it seems best to choose common capacitor values and cope with the strange resistances then demanded is there a pd program out there that will work out how best to make up such a resistance given fixed resistors of the standard values per decade etc it is a common enough problem yet i cant recall seing a program that tells that rx ry rz gives rq starting with q and finding prefered values x y and z since you re worrying about the third decimal place i assume you re using tolerance resistors and capacitors
