Op-Amp Circuit Collection

Feb 3rd, 2012
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Q1) For a simulated inductor application, to yield L = 50mH, R1 = 2kohm, and C1 = 100uF, determine required value of R2? Q2) For a constant current generator, with a saturation voltage = 15V and a current reference of 18mA, calculate RLmin? Q3) For a precision rectifier application, given EIRMS = 5V, determine EOpeak? Q4) For an AC to DC converter, given EIPeak = 6V, determine EI?

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Op-Amp Circuit CollectionQ1) For a simulated inductor application, to yield L = 50mH, R1 = 2kohm, and C1 = 100uF, determine required value of R2?Ans As L= (R2*C*(R1-R2))/(1+?2*C2*R22) ?=1/? (L*C) =447.21 So L= (R2*(100x10-6)*((2x103)-R2))/ (1+ (447.21)2*(100x10-6)2*R22) (50x10-3)+ (1x10-4 ) R22 =0.2R2 - R22(100X10-6) 0r 0.0002R22 - 0.2R2+0.05=0 Solving the above eq. we have R2=1K? and R2=0.25?Q2) For a constant current generator, with a

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