E-LEARNING
1/ The common-source amplifier in the figure beside has VBE(ON) = 0.7
V, C1,2&3 → , RI = 5 k, R1 = 430 k, R2 = 560 k, RS = 13 k, RD
= 43 k, R3 = 240 k, IDQ = 0.2 mA, VDSQ = 5 V, VGS – Vtn = 0.7 V.
a/ What is the value of VDD?
b/ Draw the small signal equivalent circuits for this amplifier.
c/ Determine the gain AM = vo/vi .
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