Don's source follower

[Don Tillman]

   From: "Michael Lloyd" <mlloyd1 at enteract.com>
   Date: Sun, 25 Jun 2000 21:13:01 -0500

   Anyway, I did manage to find where I did actually see a circuit
   that looks like what you described.  It's from an article in the
   Journal of the Audio Engineering Society September 1975, Volume 23,
   Number 7, pages 530 - 535. The article title is "A Complementary
   Source Follower Circuit for Condenser Microphone Preamplifier by
   T. Ken Matsudaira and Osamu Kono of Sony Corp. 

[Stopping by the local university library...]

Bullseye!  Thank you so much!  Sure enough, Matsudaira and Kono
described this exact circuit 25 years ago.  

They only talk about its use as the first stage of a condenser
microphone preamp stage.  That's strange; I think this circuit has
lots of potential applications.  And it's not clear why they use a
regular source follower as a driver stage.  And they don't get into
issues like distortions, driving low impedance loads, clipping, or the
like.

So maybe more research is necessary.

  -- Don

-- 
Don Tillman
Palo Alto, California, USA
don at till.com
http://www.till.com