Recent content by Renshai

That is a very good way of putting that information. I appreciate that very much. I will be able to see the MOSFET a little more clearly now. As far as the negative gm, you said that the signal is just inverted. I guess my question is why? If I do a very basic design of the common gate I...

Anyone have any ideas? I could really use the help. Thanks.

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...

I absolutely get it now. Thank you for your help.

Wow, ok. Good job. Now you should be able to get Vout/Vin = (-gm* Rd)/(1+gm*Rs) Thanks for the Kudos, but this is where I get into trouble. I really do not understand how that circuit is getting the (1+gm*Rs) part. I have played with it and this is where my KCL and KVL is really...

Thank you for your post and help. Here is the changed circuit. All I did was add a small signal voltage to the input. I hope that is right.

Homework Statement We are going over gain, Gm, Ro, and Rin for MOSFETS. We are told to know and memorize certain equations and how to get these equations. In this particular problem we are told to find voltage gain by analyzing small signal. My professor gave this as the answer: (-gm*...