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Unformatted text preview: : What would make the Problem 7 circuit a better constant current source than our usual one? . e V IN V OUT = 1 k 2 k 12 V 2 V S Problem 9 : Let V 1 = V 2 = 10 V, C 1 = C 2 = 145 pF, R coil = 20 k , R 1 = R 2 = 10 k . Coil holds the switch in place as long as it voltage exceeds 5 V. Suppose I hold the switch down long enough to fully charge C 2 and then flip the switch up (and let go) instantaneously at t = 0. Sketch V out (t), or state which time intervals V out (t) = 1 V and when V out (t) = 1 V. Problem 10 : For the circuit, graph, and tree shown above: a) Determine the fundamental cut set for each tree branch. b) Consider the two supernodes that each fundamental cut set creates. Write a KCL equation for each fundamental cut set. 2 20 10 20 4 5 10 V 2 A a b c d e f g h...
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 Spring '11
 Shah

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