hwk_41_f10_03 - voltage that would be measured with a...

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ECE 3041 Homework Assignment No. 3 Fall 2010 Second Homework for Experiment No. 4 Due Week of September 20 1. An ac voltmeter is being used to measure the rms magnitude of the ac voltage across nodes AA’ in the circuit shown below. The source voltage is e ( t )=20 2cos( ωt )V . Use both Cadance and National Instruments SPICE to determine and plot the voltage that would be measured with this voltmeter as a function of the frequency of the sinusoidal source as the frequency of this source varies from 10 Hz to 100 kHz . The frequency is to be plotted on a log scale and the voltage on a linear scale. The voltmeter is an ideal voltmeter with an infinite input impedance. Verify the SPICE solutions with a hand calculation using complex phasors to analyze the ac circuit at the frequency f = 700 Hz . The component values are: R 1 = 300 , R 2 =3k , R 3 =68k , R = 120 k , L 1 =5H , L 2 =5H , C 1 = 150 nF ,and C 2 =1 . 5nF . Also plot (on the same sheet of paper) the
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Unformatted text preview: voltage that would be measured with a Simpson Meter Model 260-7 set to its 10 V range. 2. Use both Cadence and National Instruments SPICE to determine and plot the percentage error due to ac voltmeter loading in the measurement of the rms value of the ac voltage measured in Problem 1 when the voltmeter is a Simpson Model 260-7 set to its 10 V range. The frequency is to be plotted on a log scale and the percentage error on a linear scale. Verify the SPICE solutions with a hand calculation using complex phasors to analyze the ac circuit at the frequency f = 700 Hz . 1 V i 1 R 2 R 2 GEORGE P. BURDELL VI 1 0 DC 10 R1 1 2 10K R2 2 0 10K .END 1 i V R 2 C GEORGE P. BURDELL VI 1 0 AC 10 R 1 2 10K C 2 0 0.1U .AC DEC 30 10 10K .PROBE .END i V 1 R C 2 GEORGE P. BURDELL VI 1 0 PWL(0 10 3M 10) R 1 2 10K C 2 0 0.1U IC=0 .TRAN 10U 3M .PROBE .END...
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This note was uploaded on 09/14/2010 for the course ECE 3080 taught by Professor Staff during the Spring '08 term at Georgia Institute of Technology.

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hwk_41_f10_03 - voltage that would be measured with a...

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