Re: Reducing hiss by changing op-amps ?

From: John Woodgate (jmw_at_jmwa.demon.contraspam.yuk)
Date: 03/20/05 

Date: Sun, 20 Mar 2005 13:48:10 +0000

I read in sci.electronics.design that Pooh Bear <rabbitsfriendsandrelati
ons@hotmail.com> wrote (in <423D7960.223A4FA1@hotmail.com>) about
'Reducing hiss by changing op-amps ?', on Sun, 20 Mar 2005:

>The mic pre consists of a differential long-tailed pair followed by a
>differential op-amp configuration to make the signal 'single ended'. The
>contribution of the op-amp at low gains normally dominates the noise
>output of the mic pre.

Oh, well, I said way back that I couldn't decipher the schematic very
well. 

-- 
Regards, John Woodgate, OOO - Own Opinions Only. 
There are two sides to every question, except 
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk