|Created||March 27, 2012|
|Last modified||May 20, 2012|
|Tags||amplifier audio bjt differential jfet|
Differential FET input, single supply, referenced to ground.
V6 or R13 sets bias point. Differential in. Differential out.
Note Q1, Q2 feed back through Q5E to improve CMRR and stabilize bias over temperature.
Useful for mikes/geophones at the end of 500' twisted-pair telephone cable.