The silicon diode shown in Figure P9.22 is described by:





where at T = 300 K







vS = VS + vs = 4.2 V + 110 cos(?t)mV



? = 377 rad/s R = 7 k?



The DC operating (quiescent) point Q and the AC small-signal equivalent resistance at Q are:



IDQ = 0.548mA VDQ = 0.365V rd = 47.45?



Determine the AC voltage across the diode and the AC current through it.




Analysis:

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