Midterm+Exam

Midterm+Exam - EECS 70B Spring 2011 Problem 1: Problem 2:...

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EECS 70B Spring 2011 Total Points: 105 pts Name: ____________________ Midterm Exam (8:30 to 9:50 am, 5/6/11) Problem 1: 10 pts Problem 2: 10 pts Problem 3: 10 pts Problem 4: 25 pts Problem 5: 20 pts Problem 6: 20 pts Problem 7: 10 pts 1. ( 10 pts ) Consider the following Op Amp amplifier. Use Op Amp rules to find Vo for Vi=3 Volts and 9 Volts, respectively. Estimate Vd, defined as d VVV for each case. The Op Amp and circuit parameters are: R1= 1k , R2 = 2k , Ri=10 6 , Ro=50 , A=10 6 . + - OUT U2 OPAMP Vo 0 2 Volts R1 Vi R2 R2 2. ( 10 pts ) Give concise definitions for (a) impedance, Z of an electrical element, and (b) Transfer Function, H( ) of a system. 3. ( 10 pts ) Find the RMS values for the following periodic waveforms: (i) (ii) 0.5 1.5 3.5 5.5 t s - 1. - 0.5 0.5 1. V Volts 0.5 1.5 3.5 5.5 t s - 1. - 0.5 0.5 1. V
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4. ( 25 pts ) Consider the following circuit. Use the ON/OFF model for the diode to solve (a) to (c). 10mA _ + Vout R2 R1 (a) Find Vo for R1 = 1k and R2 = 1k  V f = 0.7V for the diode where V f is the turn-on voltage of the diode. (hint: use source transformation) (b) Find the minimum value for R2 such that the diode will stay ON.
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Midterm+Exam - EECS 70B Spring 2011 Problem 1: Problem 2:...

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