kl055
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Homework Statement
Why is R_E in parallel with 1/g_m1?
I drew the small signal model but it does not make sense to me
Understanding why R_E is in parallel with g_m in a BJT
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Why is R_E in parallel with 1/g_m1?
I drew the small signal model but it does not make sense to me
Discussion
kl055
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I get that V_A is given by a voltage divider, but why is R_E in parallel with 1/g_m1?
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Q3 is just a diode so gm3 can't play a role.
What is r23? What is VA? You need to define some of these parameters. I assume gm = β but am not sure ...
I analyzed the circuit assuming β → ∞. Why? Because any circuit that is β-dependent is not a good circuit.
So I got what looks like your expression if gm → ∞. I know that's not what you are trying to find out - sorry.
What is r23? What is VA? You need to define some of these parameters. I assume gm = β but am not sure ...
I analyzed the circuit assuming β → ∞. Why? Because any circuit that is β-dependent is not a good circuit.
So I got what looks like your expression if gm → ∞. I know that's not what you are trying to find out - sorry.