[sdiy] The Origins of Q

[john mahoney]

Q refers to the Quality of a filter. ("Quality" is apparently defined as how
resonant the filter is.)
--
john


----- Original Message ----- 
From: "Glen" <mclilith at charter.net>


> Please, help me settle something.
>
> How old is the term "Q", as used in electronics? I imagine it was used in
> the early days of radio broadcasting, because the Q of various RF circuits
> was a big concern to radio designers, but does it predate this? Does
anyone
> know the history of the term? When was it first put into use?
>
> As you can imagine, searching Google for the letter Q isn't very helpful.
:)
>
> I'm hoping that maybe one of our old-timers might remember the story of Q.
;)
>
> (This old-timer seems to have forgotten it.)
>
>
> thanks,
> Glen