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Look @ #11! From Eo+ to relative GND on Eo- it is indeed 34Vpp without any clipping using a ±10V supply with a 17Vpp @ 200Hz input to Ei. I think that is a pretty neat trick!
Op Amp Balanced Output
- Thread starter SamR
- Start date
Hi,
As this, a DC coupled circuit consisting of two Inverting OPA in Series.
When I apply a +1V DC signal input on Ei, the differential output will be Eo+=-1Volt and Eo- = +1Volt.
This is a 2Volt differential output, so V(+eo,-eo) differential Output = 2* Ei
The original author's text should have specified the Ei input as Vpeak, so that the output Vppk = 4*Ei , in order to claim this result
E
As this, a DC coupled circuit consisting of two Inverting OPA in Series.
When I apply a +1V DC signal input on Ei, the differential output will be Eo+=-1Volt and Eo- = +1Volt.
This is a 2Volt differential output, so V(+eo,-eo) differential Output = 2* Ei
The original author's text should have specified the Ei input as Vpeak, so that the output Vppk = 4*Ei , in order to claim this result
E
Yes, when I reread it, it distinctly says 4Ei and Ei was initially 1Vpp. I only upped it later to show that it is possible to generate a voltage greater than the rails of a single OPA allows. Can only assume it was a typo or that the author was a bit unclear in his intentions.
