E elsakka_mostafa New Member Jan 2, 2011 #1 1-why in voltage amplifier the output resistance tend to be zero? and in current amplifier the out put resistance tend to be infinity? 2-for velocity effect why the drain current will be linear with Vgs?
1-why in voltage amplifier the output resistance tend to be zero? and in current amplifier the out put resistance tend to be infinity? 2-for velocity effect why the drain current will be linear with Vgs?
MikeMl Well-Known Member Most Helpful Member Jan 2, 2011 #2 1. voltage amplifier (with feedback) acts like a voltage source with very low output impedance. A current-output amplifier acts like a current source, which has a very high output impedance. 2. I dont understand what you mean by "velocity effect"?
1. voltage amplifier (with feedback) acts like a voltage source with very low output impedance. A current-output amplifier acts like a current source, which has a very high output impedance. 2. I dont understand what you mean by "velocity effect"?
audioguru Well-Known Member Most Helpful Member Jan 2, 2011 #3 The "velocity effect" is used when you throw something at somebody who no speeky zee Engrish.
MikeMl Well-Known Member Most Helpful Member Jan 2, 2011 #4 audioguru said: The "velocity effect" is used when you throw something at somebody who no speeky zee Engrish. Click to expand... Another "**broken link removed**" Post by AudioGuru
audioguru said: The "velocity effect" is used when you throw something at somebody who no speeky zee Engrish. Click to expand... Another "**broken link removed**" Post by AudioGuru