HW1S

# HW1S - University of Southern California Depa,r'tment...

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University of Southern California Depa,r'tment of Electrical Engineering - Electrophysics EE 348L, Fail 2006 Homework Set #1 Due at the beginning of class, 1 September Read: T & R: Class Notes: Chapter 1 (pp. 1 - 12), Chapter 5 Problem 1 The opamps are ideal. Determine node voltages uo and u6. />-t c'-- k 2-*r -4 +- .ft Zm.A , --+ c) fx t tc6 =<:* + lG /r? 7 \$ */u t( ''c\-J-,,-^e.^,\ <2 /6 ,/c' va rrr @ rk i N L 9 4 t - ' + - ;

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:_-> Problem 2 Use SPICE to plot uo and u6 for the circuit of Problem 1 when source?/c varies from -5 V to +5 V. Ignore power supply limits, Note: Failure to do this problem will decrease the remaining score by 50 %. Problem 3 The circuit drawn below is to function as a clock. Switch ,9 opens at noon, and the output voltage is the time in hours. At midnight, when uout : 12 Y , the clock resets '*'ith a brief closure of the switch. The clock resets again the following noon. (a) Complete the designif C: 1 mF. (b) Determine the maximum acceptable input offset voltage that limits the clock error to 1 s over 12 hours.
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