MASSACHVSETTS INSTITVTE OF TECHNOLOGYDepartment of Electrical Engineering and Computer Science6.002 - Electronic CircuitsFall 2005Homework #8Issued 11/1/2005 - Due 11/9/2005Helpful Readings for this Homework: 10.3, 10.5, 10.6.2-10.6.4Exercise 8.1: Exercise 10.6 from Agarwal & Lang (page 570). The equations for parts (c) and (d) are:Problem 8.1: Consider the following circuit with an inductor driving the source follower that was seenearlier in the course. Assume that the switch has been in position 1 for a long time before t=0. TransistorM1 has VT = 1V.a) At t=0, the switch moves from position 1 to position 2. Sketch vG for t>0, assuming that R2>R1/2.Label the initial and final values in terms of R1 and R2.b) With R2=100Ω, what is the minimum value of R1 that ensures that M1 never enters the triode mode ofoperation?c) With the value of R1 chosen in part b, at what time t>0 does M1 enter the cutoff region?Problem 8.2: For all parts of this problem, C=10µF.a) What is vC1(t) for t>0 in the circuit below?)10(310tCev−=)10(63)10(tDei−−=5V12L=10mH1V+_M1RSR1R2R2vG_+b) What is vC2(t) for t>0 in the circuit below?c) In the circuit below, the initial voltage across the capacitor is 2V. At t=0, the switch closes. What isvC(t) for t>0? (Hint: You should not need to solve any differential equations here.)Problem 8.3: Problem 10.27 from Agarwal & Lang (page 591).8k8k
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