- #1
Renshai
- 7
- 0
Why is the voltage gain of a common source MOSFET negative?
I have a schematic below and I get the voltage gain to be -gm(ro||Rd). I say that is what I get, but the truth is that is what my professor said we should get. I do not understand why the Gain (Av) is negative. It will go a long way (I think) in also helping me understanding the current path for finding Gm, Rin, and Rout.
Sorry about making the schematic a thumbnail attachment. I know it would be much easier to put it in this workspace, but I do not know how to embed the schematic into this workspace.
I have a schematic below and I get the voltage gain to be -gm(ro||Rd). I say that is what I get, but the truth is that is what my professor said we should get. I do not understand why the Gain (Av) is negative. It will go a long way (I think) in also helping me understanding the current path for finding Gm, Rin, and Rout.
Sorry about making the schematic a thumbnail attachment. I know it would be much easier to put it in this workspace, but I do not know how to embed the schematic into this workspace.