midterm_sol

# midterm_sol - ECE 1374 2. Midterm Exam (Continued) January...

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ECE 1374 2. The circuit shown diodes. Remember Midterm Exam (Continued) January 26,2010 Question 2: 25points in figure 2 is an example of an arithmetic computation circuit using the current through diode can be approximated by Iaa I"exp# Figure 2: Circuit for Question 2 (a) (15 points) What should the values of R1,R2,R3 and -Ra be if the output of the circuit computes the square of the input? fi.sf ffnd v, . * : rd : Is eh1') # = "#t/' tt,=^f in (i?) A*tni fio,{ Vu I }.ro*+,g t?p unf : 'lra*'-\$fr,, => y".:* fftrffi) ,r,,, {.# }*,;t' I fa t - S+ = }, .t?u' v,.{ - Js fl &,16 #. tr/"(-k1 )) J ->> -r,,(r (.''ffi)(€ ; -> Vnup = -r, Rry f v'' 1(tfil Vrr{ ryno{s ft," ipuare *f fl,u aayaf h,ft en f+ : Q g =.1-, K, ,.nl f1 J "rf qJ{ q {,n"r,- Sca{ar f* far" a,t{y.f 4'' ! r Page 5 of 15

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ECtr 137A Midterm Exam (Continued) (b) (10 points) What should the values of R1,R2,R3 and circuit computes the square root of the input instead? January 26,2010
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## This note was uploaded on 02/02/2011 for the course ECE 137a taught by Professor Staff during the Spring '08 term at UCSB.

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midterm_sol - ECE 1374 2. Midterm Exam (Continued) January...

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