For the emitter-follower (common- collector) amplifier circuit shown in Fig. 1, determine: (a) Voltage gain, A, = V./V;, (b) Current gain, A; =I/I; (c) Inputimpedance, Z;, and (d) Output impedance, Z,. Assume that: B =hp.=100, r.=30Q, and hie = f.r.=3kQ. Hint: Solve the homework and draw the ac equivalent circuit by using r. or h model.
Extracted text: For the emitter-follower (common- +Vcc collector) amplifier circuit shown in Fig. 1, determine: R120k2 (a) Voltage gain, A, = Vo/Vi, (b) Current gain, A, = IJI; (c) Input impedance, Z, and (d) Output impedance, Zo. Assume that: R, 30k2 RE 2.2kN v. B = hje = 100, re= 30 2, and hje = B.r. = 3 kQ. Hint: Solve the homework and draw Fig. 1 the ac equivalent circuit by using re or h model.