Finding the input resistance


Response to the following problem:

For the circuit in Figure , the transistor parameters are β = 100 and VA = ∞. Design the circuit such that IC Q = 0.25 mA and VCEQ = 3 V. Find the small-signal voltage gain Av = vo/vs. Find the input resistance seen by the signal source vs.

1753_the circuit.jpg

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Electrical Engineering: Finding the input resistance
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