From: Dennis Tomlinson ([email protected])
Date: Tue May 30 2000 - 14:21:16 PDT
It's not magic. It's the 3dB cutoff frequency
found in any filter or circuit theory text.
Validity, on the other hand, is another matter.
The "magical" Tr = 0.35/B applies only to signals
and systems which can be characterized as
low pass, and then only to those of first order.
As an approximation, it may also be applied to
multi-order systems whose characteristics are
dominated by a single low pass pole. I think we
see lots of the latter in SI work.
[email protected] wrote:
> Well done!
> Except ................
> What is magical about defining
> B = 1/(2*Pi*RC)
> as opposed to defining it any other way?
**** To unsubscribe from si-list or si-list-digest: send e-mail to
[email protected] In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
This archive was generated by hypermail 2b29 : Wed Nov 22 2000 - 10:50:29 PST