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Lab #12

# Lab #12 - JaclynAucoin Summer2003 Lab#12 SteveSmith 1 ,...

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Jaclyn Aucoin Summer 2003 Lab #12 Introduction to PSPICE and AC Voltage Dividers 6/9/2003 Steve Smith

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1) Connect the circuit in Fig 1, choosing values of the resistor and the capacitor so that the reactance of  the capacitor 1/2fC is equal to the resistance at a frequency of 4 to 5 kHz. R=1/(2fC) => f=1/(2 RC) We chose f=4.6kHz and C=.01  = 1/(2* *R*0.01 F)  => R = 3459 ,  3.3k  was chosen, and by Ω Ω   recalculating we found f = 4.8kHz. Readings Part 1 Frequency Vin (scope) Vin (meter) Vout (scope) Vout (meter) 2kHz 10V p-p sin 3.38V 8.79V p-p 2.76V
4kHz 10V p-p sin 3.3oV 7.40V p-p 2.34V 6kHz 10V p-p sin 3.28V 6.09V p-p 1.88V 8kHz 10V p-p sin 3.28V 5.05V p-p 1.53V 10kHz 10V p-p sin 3.27V 4.25V p-p 1.26V Part 2 Frequency Vin (scope) Vin (meter) Vout (scope) Vout (meter) 2kHz 10V p-p sin 3.39V 3.64V p-p 1.32V 4kHz 10V p-p sin 3.30V 5.97V p-p 2.25V 6kHz 10V p-p sin 3.29V 7.25V p-p 2.64V 8kHz 10V p-p sin 3.27V 8.14V p-p 2.84V 10kHz 10V p-p sin 3.27V 8.56V p-p 2.95V Part 3 Fig 1 Frequency Vin (scope) Vin (meter) Vout (scope) Vout (meter) 2kHz 10V p-p square 4.881V 10V p-p 4.096V 4kHz 10V p-p square 4.863V 9.29V p-p 3.31V 6kHz 10V p-p square 4.852V 8.21V p-p 2.65V 8kHz 10V p-p square 4.85V 7.09V p-p 2.18V 10kHz 10V p-p square 4.84V 5.98V p-p 1.82V

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