SimonTHK
Member
In this video: YouTube - Lecture - 11 Instrumentation Amplifiers
In the first 5 min he talks about the instrumentation amplifier.
He says that V1 + V2 / 2 = Vci Where Vci is common mode voltage.
He says that V1 + V2 / 2 = Vco Where Vco is common mode voltage.
So gain is 1.
But quistion is then, what is common mode voltage? I guees its the averrage? What can we use it for?
He also says that the differential mode gain is 1.
I read alot, but it seems very confusing to me, also why i cant explain better what i dont understand. I hope someone can gief a better explanation of what this common mode voltage means and what difference it does?
In the first 5 min he talks about the instrumentation amplifier.
He says that V1 + V2 / 2 = Vci Where Vci is common mode voltage.
He says that V1 + V2 / 2 = Vco Where Vco is common mode voltage.
So gain is 1.
But quistion is then, what is common mode voltage? I guees its the averrage? What can we use it for?
He also says that the differential mode gain is 1.
I read alot, but it seems very confusing to me, also why i cant explain better what i dont understand. I hope someone can gief a better explanation of what this common mode voltage means and what difference it does?