(Solved):
3 Based on the FET amplifier circuit shown in Figure Q3, (a) name the transistor and its configura ...
3 Based on the FET amplifier circuit shown in Figure Q3, (a) name the transistor and its configuration. (3 marks) (b) plot the transfer characteristics of the transistor. (6 marks) (c) determine \( V_{G S Q} \) and IDQ using the graphical approach. (Given the IDss \( =9 \mathrm{~mA} \), \( V_{p}=-4.5 \mathrm{~V}, \mathrm{rd}=\infty \) and \( \left.\mathrm{g}_{\mathrm{m}}=2.4 \mathrm{mS} .\right) \) (12 marks) (d) skecth the AC small-signal equivalent circuit of the FET amplifier circuit. (3 marks) (e) calculate the input impedance, \( Z_{i} \), output impedance, \( Z_{0} \) and voltage gain, \( A_{v} \). (6 marks) Figure Q3