[sdiy] Re: understanding formula for cutoff?

[Tom Wiltshire]

Dan,

> is it 1 over 2pi times RC?

Yes, for a basic RC filter.

> and would i actually solve that by multiplying PI times 2, then  
> figuring out R times C and multiplying the first answer (2pi) times  
> the Answer of RC and then dividing the answer by ONE?

No!
The first bit is ok ( multiply PI by two, multiply R by C, multiply  
those two bits together) but the second bit is wrong.
You need to *divide one by the result* not divide the result by one  
(which wouldn't do anything).

> i am trying to finally GET how to do math in electronics and AARON  
> LANTERMANS classes have really given me the encouragement.

Yes, I bet. I know I've learned a lot from watching his lectures too.

Regards,
Tom