clintrubber
Well-known member
I came across this (please skip if it's been discussed before):
which is an opamp. Inputs at the bases of Tr1 & Tr2, output from the collectors of Tr3,4.
Scroll down on this page, it's the third circuit
http://www.4qdtec.com/opamp.html
The author claims that "It is a circuit which is original to me and I have never seen its like used elsewhere! " and at least I myself haven't seen it like that before.
This opamp 'in use':
from http://www.4qdtec.com/preamp.html
From what I've read so far I understood the fun is in the low transistor count and the unusual topology - no performance advantages as it seems.
Regards,
Peter
which is an opamp. Inputs at the bases of Tr1 & Tr2, output from the collectors of Tr3,4.
Scroll down on this page, it's the third circuit
http://www.4qdtec.com/opamp.html
The author claims that "It is a circuit which is original to me and I have never seen its like used elsewhere! " and at least I myself haven't seen it like that before.
This opamp 'in use':
from http://www.4qdtec.com/preamp.html
From what I've read so far I understood the fun is in the low transistor count and the unusual topology - no performance advantages as it seems.
Regards,
Peter