The silicon diode shown in Figure P9.27 is described by:

where at T = 300 K



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

? = 377 rad/s R = 7 k?



Determine the current iD at the operating point Q:



a. Using the diode offset model.

b. By graphically solving the circuit characteristic (i.e., the DC load-line equation) and the device characteristic (i.e., the diode equation).




Analysis:



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