# HW7 - UC Berkeley EECS Department EECS 40 HW7 Sample...

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UC Berkeley, EECS Department B. E. Boser EECS 40 HW7: Sample Midterm 1 (optional) UID: 1. In the circuit below i D and R D model a photodiode in a ﬁberoptic receiver. Find R 1 and v os such that v o = R x i D + v b (1) Parameter: R D = k Ω , R x = k Ω , v b = mV. R 1 = opt. 0 v os = opt. 1 2. Find the values of I 1 and R 4 such that the power dissipated in R 2 is P R 2 = mW and v 5 = V. Note: When solving for I 1 , you get two correct answers. Report the positive result. Also, R 4 may be negative. Parameter: I 2 = mA, V 1 = V, R 1 = k Ω , R 2 = k Ω , R 3 = k Ω , R 5 = k Ω . I 1 = opt. 2 R 4 = opt. 3 3. Find component values such that all three circuits shown behave identically. Parameter: I 1 = mA, V 1 = V, R 1 = k Ω and R 2 = k Ω . V T = opt. 4 R T = opt. 5 I N = opt. 6 R N = opt. 7 1 September 18, 2010 HW7 v1140 http://ucbfeedback.com

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4. Precision opamps come particularly close to the speciﬁcations of “ideal” ampliﬁers, but usually cannot drive low resistance loads R L . In the circuit below, the “precision opamp” sets
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HW7 - UC Berkeley EECS Department EECS 40 HW7 Sample...

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