( extends the https://forum.allaboutcircuits.com/threads/opamp-virtual-relative-ground-proper-use.126736/ )
http://chpsndtch.blogspot.com/2017/02/op-amp-internal-ground.html
i have done yet NO ANY real tests confirming the feature nor do i know too much about this -- just that the Spice's mathematical op amp model hints such*** exists
... as i played around with the various Spice transistor models of the op amps it came out that some input stage topologies don't have (hypothetical or not) the "internal ground"
http://chpsndtch.blogspot.com/2017/02/op-amp-internal-ground.html
i have done yet NO ANY real tests confirming the feature nor do i know too much about this -- just that the Spice's mathematical op amp model hints such*** exists
... as i played around with the various Spice transistor models of the op amps it came out that some input stage topologies don't have (hypothetical or not) the "internal ground"
