Question

The field-effect transistor (FET). Answer the following. (a) Sketch the NMOSFET’s [that is, the n-channel FET’s] schematic symbol. Show the three terminals. Label terminals, voltages and currents. Especially, show where the drain current ID enters the transistor and where it leaves the transistor. [Hint: no current enters or leaves a FET’s gate.] (b) Let K = 0.500 mA/V 2 and Vth = 1.00 v. If VS = 0, VG = 1.50 v. and VD = 0.20 v., then compute ID. Is the FET operating in triode or saturation? (c) Increase VD to 0.40 v. Repeat part b. (d) Increase VD to 0.60 v. Repeat part b. (e) Increase VD to 0.80 v. Repeat part b. [Hint: your answers to parts d and e should be the same.] Your answers to parts c, d and e can be very brief.

Answer 1

1. 2.