Problem 1. The output of an nFET is used to drive the gate of another nFET as shown in the following figure. Assume that VDD = 5.0 V and VTn = 0.50 V. Find the output voltage Vout when the input voltages are at the following values ( 30 points). (a) Va = 5.0 V and Vb = 5.0 V; (b) Va = 0.4 V and Vb = 3.0 V; (c) Va = 2.0 V and Vb = 2.5 V; (d) Va = 5.0 V and Vb = 1.8 V;
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