"Jim Thompson" wrote in
message ...
On Sun, 14 Jun 2009 16:08:47 +0100, "ian field"
wrote:

Does anyone know where I can find more info on the two transistor feedback
pair (I think some people call it a "shunt series pair")?

Having spent much of Saturday googling I only found coincidental mentions
of
the circuit in other articles - I had hoped to also find some info on the
history of the development of the circuit.

Can anyone help?

TIA.


I've known of it since I was a kid. For an advanced version see
MC1552/1553 on my website.


Thanks - I should have indicated that I was interested in audio
applications.