The essence of transistor operation is that a change in
Chapter 6, Problem 6.81(choose chapter or problem)
The essence of transistor operation is that a change in vBE, vBE, produces a change in iC, iC. By keeping vBE small, iC is approximately linearly related to vBE, iC = gmvBE, where gm is known as the transistor transconductance. By passing iC through RC, an output voltage signal vO is obtained. Use the expression for the small-signal voltage gain in Eq. (6.30) to derive an expression for gm. Find the value of gm for a transistor biased at IC = 1 mA.
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