ET 304a Laboratory 10 Computer aided Ac Circuit Analysis Purpose To use a commercially available computer aided circuit analysis tool to solve for the voltages and currents in series parallel and series parallel ac circuits To lean the basic skills necessary to run a Pspice based circuit analysis program and get the desired output Objectives Enter sinusoidal sources into a circuit analysis program that reflect given phasor values Convert from inductive and capacitive reactance values to values of inductance and capacitances given an operating frequency for the circuit Run transient and operating point analysis to solve simple ac circuits Use the results display tools to view time plots and get rms and phase values for simple ac circuits Procedure 1 2 Review the Circuitmaker tutorial on Transient and Frequency analysis provided The laboratory instructor should also give a demonstration of program usage Using the schematic drawing tools in the Circuitmaker program construct the circuit shown below This circuit was solved in problem 7 of chapter 15 in the Boylestad text Assuming a source frequency of 10 Hz find the inductance of the 6 ohm inductor for use in the circuit simulator 8 ohm I f 10 Hz VR VL 6 ohm E 100 0 3 4 Convert the phasor source voltage E to a peak value with the appropriate phase shift for use in the simulator Use the simulation program to plot the time functions of i t VL t and VR t Compute the phasor values of I VL and VR from the time functions Compare the simulator values to theoretical calculations made in the homework solutions Fall 2004 exp1004a doc 5 Construct the circuit shown below using the schematic drawing tool This is problem 8 in chapter 15 of the lecture text For a source frequency of 10 kHz find the value of capacitance for use in the Circuitmaker simulator Convert the source voltage phasor E to a peak value with the appropriate phase shift for use in the simulator 30 ohm I 10 ohm f 10 kHz VR VC E 120 20 6 7 8 Use the simulation program to plot the time functions of i t VC t and VR t Compute the phasor values of I VC and VR from the time functions Compare the simulator values to theoretical calculations made in the homework solutions Using the schematic drawing tools in the Circuitmaker program construct the circuit shown below This circuit was solved in problem 11 of chapter 15 in the Boylestad text Compute the values of L and C in the circuit from the frequency of the given sine source e t 2k 3k 1k I VR VL VC e t 6sin 314t 60o 9 10 11 Use the simulation program to plot the time functions of i t VL t VC t and VR t Compute the phasor values of I VL VC and VR from the time functions Compare the simulator values to theoretical calculations made in the homework solutions Using the schematic drawing tools in the Circuitmaker program construct the circuit shown below This circuit was solved in problem 29 of chapter 15 in the Boylestad text Fall 2004 2 Exp1004a doc Find the inductance of the 10 ohm inductor assuming that the source frequency is 20 Hz Convert the source voltage phasor E to a peak value with the appropriate phase shift for use in the simulator Is IR IL 10 ohm E 60 0 12 13 12 ohm Use the simulation program to plot the time functions of is t iL t and iR t Compute the phasor values of Is IL and IR from the time functions Compare the simulator values to theoretical calculations made in the homework solutions Report 1 2 3 Use the standard report format for the document Put the homework and simulation results in tables Compute the percent error between the homework theoretical calculations and the simulation results Attach printouts of each circuit time functions from the Circuitmaker program Fall 2004 3 Exp1004a doc