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Discussion: 1. For the circuits of item one and two, at any mode (depletion or enhancement) does the transistor operate? Explain why. And for each one of these two circuits, if we change the resistors values, can we change the operating mode?. 2. For the circuits of item one and three, Plot the AC equivalent circuits, find the values of input resistance and write the equations of the gain (with and without the capacitor C7). 3. What are the values of ID and VGs that represents the midpoint bias for a Depletion MOSFET?. 4. Why we cannot use self-bias for E-MOSFET amplifiers? Prove that with the needed equations. 5. Choose the correct answer: a) The reason of high input resistance of the MOSFET is: 1. The insulator layer. 2. The reverse biasing. 3. The forward biasing. b) Which transistor has no Ipss parameter?. 1. JFET. 2. E-MOSFET. 3. D-MOSFET. c) For an n-channel D-MOSFET transistor, at what condition can gm be greater than gmo?. 1. VGs is positive. 2. VGs is negative. 3. VGS =0. d) A certain amplifier has an Rp=1KQ. When a load resistance of 1KQ is capacitively coupled to the drain, the gain will reduce to the: 1. Half. 2. Quarter. 3. Not change.