The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: John Woodgate
Subject: Re: A Coupling Capacitor Question?
Date: Fri, 13 Dec 2002 09:38:21 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Fri, 13 Dec 2002 10:06:52 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Ron Hubbard
wrote (in ) about 'A Coupling Capacitor Question?', on Thu,
12 Dec 2002:
>I'm working on a project that has a couple of Sallen and Key
>filters coupled together ( a low pass filter cascaded to a
>filter to make a bandpass filter) by a number of 0.47 uF caps.
>For some reason, those 0.47 uF caps are scarce in my neck of
>the woods for the moment and I'm wondering if I could use 1 uF
>caps without changing the frequency characteristics of the
It depends on whether the coupling capacitor at the input of the HP
filter is just for coupling or part of the filter. Is it an odd-order
filter consisting of a passive single section followed by one or more
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
PLEASE do NOT copy news posts to me by E-MAIL!
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup