> There are many ways to calculate the resistor values,
>> depending on the quality of the approximations used.
>
> Thank you, John, for a great explanation of a basic electronic concept
> that I never did learn.
>
> And to the critics: not all who ask such questions are teens who want help
> with homework. Some are 50-something hobbyists who need to understand
> similar things. Best to err on the side of "too much knowledge" (if there
> *is* such a thing in America...)
>
> Thanks again, John, for not doing the oh-so-common selfish "knowledge is
> power" USENET thing...
>
> Gratefully,
> Doc
Well, the reply is from a really nice guy. Just the same, the question belongs in sci.electronics.basics. BTW i absolutely detest Google for listing this ng as "popular"; the spam and OT posts went up 10 fold afterwards.