6.1 (a) Determine the small-signal parameters gms", and ro of a transistor with 180 and VA = 150 V for bias currents of (i) Ico = 0.5 mA 2 mA. (b) Repeat part (a) for ẞ= 80 and VA 100 V when parameters and (ii) Ico biased at (i) Ico 0.25 mA and (ii) IcQ = 80 μA.

Fig: 1