For the emitter-follower (common- collector) amplifier circuit shown in Fig. 1, determine: (a) Voltage gain, A, =V,/Vi, (b) Current gain, A;=1,/I; (c) Inputimpedance, Z;, and (d) Output impedance, Z,. Assume that: B =hp=100, r.=30€Q, and h;, = f.r. =3 kQ. Hint: Solve the homework and draw the ac equivalent circuit by using r. or h model.
Extracted text: For the emitter-follower (common- collector) amplifier circuit shown in Fig. 1, determine: +Vcc R,120k2 Cs (a) Voltage gain, A, = V/Vi, (b) Current gain, A; = 1JI; (c) Input impedance, Z, and (d) Output impedance, Zo. Cc Assume that: R,30k2 + RE 2.2k2 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.