[sdiy] trying to understand amplification of an electret mic element

[Tom Wiltshire]

On 7 Sep 2011, at 01:36, dan snazelle wrote:

> i am glad you pointed out the obvious....I was completely overlooking it
> 
> I made the mistake of looking at a few schematics (which showed a .1uf) and then taping on an opamp, without thinking about the ways that the caps and resistors would interact....
> 
> filters and filter theory are one of the weakest areas in my immediate knowledge of electronics...I use a lot of filter calculators or trial and error....and often when I use a cap I use values that have worked before with similar
> signals,etc
> 
> anyway, thanks goes to all who helped!
> I am now happily at the bench reading a filter book

1 / 2.pi.R.C is all you need to know for a single R and C, any way around.

T.