USA: +1(669)289-8683 
Sign in
Laboratory Report Cover Sheet
DeVry University
College of Engineering and Information Sciences
Course Number: ECET210
Professor:
Laboratory Number: 1
Laboratory Title: AC Fundamentals, Sinusoidal and Other Waveform Characteristics
Submittal Date: Click here to enter a date.
Objectives:
Results:
Conclusions:
Team:
Name
Program
Signature
Name
Program
Signature
Name
Program
Signature
Observations/Measurements
:
III. A. 7. Sine Wave Measurements:
|
Frequency (kHz) |
Peak Value (VP, in V) |
Peak to Peak Voltage, VPP |
RMS Value, VRMS |
Voltage as per DMM |
Time period (msec) |
III. A.
8
. Sine Wave Calculated Period:
T =
III. A. 9. Measured Versus Calculated Period:
Match? Yes _____ No ______
III A. 10. Various Sine Wave Frequencies:
|
Frequency, (kHz) |
Time Period |
RMS Value |
|
|
Measured |
Calculated |
||
|
2.0 |
|||
|
3.0 |
|||
|
4.0 |
|||
|
5.0 |
III. A. 11. Different Waveform Measurement:
|
Type of Waveform |
Measured Frequency |
RMS Value from Internet |
Value per DMM |
|
|
Square Wave |
||||
|
Triangle Wave |
III. B. 3, MultiSim Waveform Measurements:
|
Measured RMS Results (Tables 2 & 3) |
MultiSim Simulation Results |
|
Sawtooth Wave |
Questions
:
1. Refer to the oscilloscope trigger setting. What could happen to the waveform display if the Negative Slope were to be chosen? Explain the consequence in your own words and also sketch the waveform you would see on the oscilloscope display.
Grade:
|
Deliverable |
Points Available |
Points Achieved |
|
|
Laboratory Cover Sheet |
8 | ||
|
Working Circuit(s)/Program(s) |
|||
| Observations/Measurements |
6 |
||
| Questions | |||
|
Total Points |
30 |
||
|
Comments: |
Laboratory Procedures
DeVry University
College of Engineering and Information Sciences
I. OBJECTIVES
1. Use a function generator to produce different periodic waveforms.
2. Use an oscilloscope to observe periodic waveforms.
3. Use the oscilloscope to measure the waveform properties, including:
a. Frequency, f and Time period, T
b. Amplitude or Peak Value, VP , and Peak to Peak Value, VPP
c. RMS Value, VRMS
4. Repeat the measurements using MultiSim
II. PARTS LIST
Function generator
Dual channel oscilloscope
BNC to BNC cable (50 Ω)
BNC cable with split ends on one side, or banana plugs
DMM (digital multimeter)
IBM PC or compatible with MultiSim software
III. PROCEDURE
A. Observing Waveforms on the Oscilloscope
1. Connect the function generator output to Channel 1 of the oscilloscope with a BNC-BNC cable as shown in Figure 1 below and turn on both instruments.
Figure 1: Function Generator to Oscilloscope Connection
2. Select the Sine wave button of the function generator. Set the frequency to 1 kHz.
3. Select the Amplitude button on the function generator to set the output voltage. Adjust the voltage to 2 V peak to peak.
4. On the oscilloscope, set the Volts/Div knob to 500 mV/Div. Adjust the time base control to 500 µs/Div.
5. On the oscilloscope, select the AC coupling, select the EDGE button in the trigger area, and select positive. Make sure that Source 1 is selected.
6. The output waveform as seen on the oscilloscope is shown in Figure 2 below:
Figure 2: Sine Waves Displayed on Oscilloscope Screen
7. Using the oscilloscope, including the cursors and built-in functions, and the DMM (where indicated), record the required measurement into Table 1.
Frequency
(kHz)
Peak Value
(VP, in V)
Peak to Peak Voltage, VPP
RMS Value, VRMS
Voltage as per DMM
Time period (msec)
Table 1: Sine Wave Measurements
8. Calculate the time period of the sine wave.
T = ________________________
9. Compare with the measurement done on the oscilloscope. Verify whether both numbers agree or not.
YES_____ NO______
10. Change the sine wave frequency only on the function generator as specified in Table 2. Measure the time period and the RMS values for each setting and compare the measurement with your calculations.
Frequency, (kHz)
Time Period
RMS Value
Measured
Calculated
Measured
Calculated
2.0
3.0
4.0
5.0
Table 2: Different Sine Wave Frequency Parameters
11. Change the wave form shape only on the function generator to different types as shown in Table 3 and take measurements of the corresponding RMS values in each case. You may choose any frequency from the above table of measurements. Explore the Internet to obtain the RMS value of different (standard) waveforms and record the values in the table below:
Type of Waveform
Measured Frequency
RMS Value from Internet
Value per DMM
Square Wave
Triangle Wave
Table 3: RMS Values for Different Waveforms
B. Computer Simulation of the Experiment.
1. Repeat the measurements using MultiSim. Use the simulation circuit shown below.
Figure 3: MultiSim Simulation Circuit
Notice that Function generator, XFG1 is a generic type and XSC1 is an Agilent oscilloscope.
2. Double click on the XFG1 to select the waveform type, the frequency, and the amplitude as shown in Figure 4.
Figure 4: MultiSim Function Generator Operation
3. Use the simulated circuit to repeat the measurement made in completing Tables 2 and 3. Record the results in Table 4.
Type of Waveform
Measured RMS Results (Tables 2 & 3)
MultiSim Simulation Results
Sine Wave
Square Wave
Triangle Wave
Table 4: MultiSim Measurement for Various Waveforms
IV. TROUBLESHOOTING
Describe any problems encountered and how those problems were solved.
Ch1Ch2
Function GeneratorDual Channel Oscilloscope
OUT
BNC -BNC Cable
Ch1
Ch2
Function Generator
Dual Channel Oscilloscope
OUT
BNC – BNC Cable
L
aboratory Procedures
De
V
ry University
College of Engineering and Information
S
ciences
I. OBJECTIVES
1. To analyze a series AC circuit containing an inductor (L) and a resistor (
R
) using Ohm’s Law and Kirchhoff’s Voltage Law.
2. To simulate the RL circuit and observe the voltage drops and currents at different frequencies.
3. To build a RL circuit and measure voltage drops and current at different frequencies.
4. To prove that the power delivered by the source is equal to the sum total of power dissipated by all of the resistors in the circuit.
II. PARTS LIST
Equipment:
IBM PC or Compatible
Function
Generator
DMM (Digital Multimeter)
Parts:
1 – 470 Ω Resistor 1 – 47 mH Inductor
Software;
MultiSim 11
III. PROCEDURE
A. Theoretical Analysis
1. Given the R & L series circuit in Figure 1, calculate the total equivalent impedance, ZT , of the circuit at frequencies, f = 1 kHz, 2kHz and 3 kHz, and list the values obtained in Table 1.
Figure 1: Series R L Circuit
Note: Notice that the self resistance, RL of the 47 mH inductor is shown in the schematic. This should be included in the analysis, as it is present with the inductor, since the inductor is a wire-wound component. Before starting the lab, measure the coil resistance with a DMM and include the value in the ensuing calculations.
Frequency (kHz)
Reactance, XL
(Ω)
Inductive Impedance ZL
Total Series Circuit Impedance ZT
Rectangular Form
RL
+
j XL
Rectangular Form
[R + RL] + jXL
Magnitude
Angle
1
2
3
Table 1 – RL Circuit-Calculated Impedance Values
2. Calculate and record the following quantities:
Frequency (kHz)
IS (
RMS
) = VS / ZT (A)
Power Factor
Rectangular Form
Magnitude
Angle
1
2
3
Table 2 – RL Circuit-Calculated Current Values
Frequency (kHz)
VL (RMS) – (Volts)
Rectangular Form
Magnitude
Angle
1
2
3
Table 3 – RL Circuit-Calculated Inductor Voltage Values
Frequency (kHz)
VR (RMS) – (Volts)
{VL + VR}(RMS) –
(Volts)
Rectangular Form
Magnitude
Angle
1
2
3
Table 4 – RL Circuit-Calculated Voltage Values
3. Does the sum of the 2 voltage drops in Table 4 equal 2.5 VRMS ?
(YES or NO)
Explain why your answer is what it is.
4. Calculate the power dissipated in the series resistor of this circuit and the power supplied by the source:
Frequency (kHz)
PR
(W)
PS
(W)
1
2
3
Table 5 – Source Power and Power Dissipation
B. MultiSim Simulation and Circuit Calculations
1. Launch MultiSim and build the circuits shown in Figure 2. Include the AC power source and connect the DMMs.
Figure 2 – MultiSim RL Circuit with Instrumentation
2. The MultiSim AC power source has the facility to choose RMS value for the voltage in addition to frequency and the phase. Type 2.5 in the voltage window of the power-source dialog box.
3. Choose any one frequency (1kHz, 2 kHz, or 3 kHz) for the source used in Section A. In Figure 2, a source frequency of 1 kHz is used.
4. Set both DMMs, XMM1 and XMM2, to read AC measurements and Voltage (V). Set the DMM, XMM3, to read AC RMS Current.
5. Expand the DMMs, activate the MultiSim simulation, and record the voltage and current readings in Table 5.
Frequency (kHz)
IS (RMS)
(Amps)
VL (RMS)
(Volts)
VR (RMS) (Volts)
Table 5 – MultiSim Simulation Results
6. Do the (simulated) voltage and the current values in Table 5 agree with those obtained in Tables, 2, 3, and 4 of Part A? (Circle your answer).
YES NO
7. Remove the DMMs from the circuit and enable the wattmeter from the instrument menu, as shown in Figure 3.
Figure 3 – AC Power Measurement with Wattmeter
8. Turn the simulator ON and note the Power in Watts and the Power Factor as displayed by the simulator wattmeter instrument.
Frequency
(kHz)
Source Power, PS
(Watts)
Power Factor
Table 6 – Power Measurement Readings
9. Do the numbers in Table 6 agree with those in Table 2?
YES NO
If there is any disagreement, investigate the source of error and report your findings below:
C. Construction of a Series R L Circuit and Measurement of Circuit Characteristics
1. Construct the circuit in Figure 1.
2. Set the function generator voltage to 2.5 V RMS. Set the frequency to the same value used in the simulator experiment.
3. Set DMM to measure AC current and make the appropriate connections. Switch the function generator power ON.
4. Record the current reading.
IS = _____________ (A)
5. Is this the same as the simulated and calculated value? ________ (YES or NO)
6. Switch OFF the AC input power. Remove the DMM and re-configure it to measure voltages. Reconnect the circuit and apply power. Measure the voltage across L and R, one at a time.
7. Record these voltages.
VL = ________ (V) VR = ________(V)
Are the voltage readings the same as your calculated and simulated values?
__________ (YES or NO)
8. If you answered NO, explain why you think they differ.
IV. TROUBLESHOOTING
Describe any problems encountered and how those problems were solved.
Course Number: ECET-210 Laboratory Number: 2 Page 2 of 6
L = 47 mH
R = 470 Ω
V
R
V
L
+
R
L
V
S
= 2.5 V
RMS
Measured resistance,
not reactance, of the
coil in Ohms
Function
Generator
AC
L = 47 mH
R = 470 Ω
VR
VL
+
Measured resistance, not reactance, of the coil in Ohms
VS = 2.5 VRMS
Function Generator
RL
Laboratory Report Cover Sheet
DeVry University
College of Engineering and Information Sciences
Course Number: ECET210
Professor:
Laboratory Number: 2
Laboratory Title: Analysis of AC Series RL Circuit Using Simulation and Construction
Submittal Date: Click here to enter a date.
Objectives:
Results:
Conclusions:
|
Team: |
||||||||
|
Name |
Program |
Signature |
||||||
Observations/Measurements:
III. A. 1. RL Circuit-Calculated Impedance Values:
Frequency (kHz)
Reactance, XL
(Ω)
Inductive Impedance, ZL
Total Series Circuit AC Impedance, ZT = [R + RL] + j XL
Complex Notation
RL + j XL
Complex Notation
Magnitude
Angle
1
2
3
III. A. 2 RL Circuit-Calculated Values:
Frequency (kHz)
IS (RMS) = VS / ZT (A)
Power Factor
Complex Form
Magnitude
Angle
1
2
3
Frequency (kHz)
VL (RMS) – (Volts)
Complex Form
Magnitude
Angle
1
2
3
Frequency (kHz)
VR (RMS) – (Volts)
{VL + VR}(RMS) –
(Volts)
Complex Form
Magnitude
Angle
1
2
3
III. A. 3. Voltage Drops Across R and L Equal VRMS:
Match? Yes _____ No ______
Explanation:
III A. 4. RL Circuit-Calculated Power Dissipation:
Frequency (kHz)
PR
(W)
PS
(W)
1
2
3
III. B. 5. RL Circuit Simulation Results:
Frequency (kHz)
IS (RMS)
(Amps)
VL (RMS)
(Volts)
VR (RMS) (Volts)
III. B. 6. Simulation Values Match Calculated Values:
Match? Yes _____ No ______
III. B. 8. RL Circuit-Simulated Power Measurement:
Frequency
(kHz)
Source Power, PS
(Watts)
Power Factor
III. B. 9. Simulation Values Match Calculated Values:
Match? Yes _____ No ______
Explain any mismatch:
III. C. 4. RL Circuit-Measured Current:
IS = _____________ (A)
III. C. 5. Value Matches Calculated and Simulated Values:
Match? Yes _____ No ______
III. C. 7. RL Circuit-Measured Voltages:
VL = ________ (V) VR = ________(V)
Match? Yes _____ No ______
Questions:
1. Is the power supplied by the source the same as that dissipated in the resistor?
2. What do you call the power lost in the inductor? What are the units?
3. What is meant by Power Factor Correction?
4. Construct a Phasor Diagram to represent the source voltage, source current, voltage drops, VR, and VL across the resistor and the inductor. The diagram does not need to be drawn to scale. However, the values of the items represented must be included in the diagram.
5. Can the phase information be obtained from an oscilloscope? Yes No
Grade:
Deliverable
Points Available
Points Achieved
Laboratory Cover Sheet
8
Working Circuit(s)/Program(s)
8
Observations/Measurements
6
Questions
8
Total Points
30
Comments:
Laboratory Procedures
DeVry University
College of Engineering and Information Sciences
I. OBJECTIVES
1. To analyze a series AC circuit containing a capacitor (C) and a resistor (R) using Ohm’s Law and Kirchhoff’s Voltage Law.
2. To simulate the RC circuit and observe the voltage drops and current at different frequencies.
3. To build an RC circuit and measure voltage drops and current at different frequencies.
4. To prove that the power delivered by the source is equal to the sum total of power dissipated by all the resistors in the circuit.
II. PARTS LIST
Equipment:
IBM PC or compatible
Function generator
DMM (digital multimeter)
Parts:
1 – 1 K Ω Resistor 1 – 100 nF Capacitor
Software:
MultiSim 11
III. PROCEDURE
A. Theoretical Analysis
1. Given the R & L series circuit in Figure 1, calculate the total equivalent impedance, ZT , of the circuit at frequencies, f = 1 kHz, 2kHz and 3 kHz and list the numbers obtained in Table 1.
Figure 1 – Series RC Circuit
Frequency (kHz)
Reactance XC
(Ω)
Total Circuit Impedance ZT
Rectangular Form
R + j XC
Magnitude
Angle
1
2
3
Table 1 – RC Circuit Calculated Impedance Values
2. Calculate and record the following quantities:
Frequency (kHz)
IS (RMS) – (A)
Power Factor
Rectangular Form
Magnitude
Angle
1
2
3
Table 2 – RC Circuit Calculated Current Values
Frequency (kHz)
VC (RMS) – (Volts)
Rectangular Form
Magnitude
Angle
1
2
3
Table 3 – RC Circuit Calculated Capacitor Voltage Values
Frequency (kHz)
VR (RMS) – (Volts)
{VC + VR}(RMS)
(Volts)
Rectangular Form
Magnitude
Angle
1
2
3
Table 4 – RL Circuit Calculated Voltage Values
3. Does the sum of the two voltage drops in Table 4 above equal 1 VRMS ?
(YES or NO)
Explain your answer.
4. Calculate the power dissipated in the series resistor of this circuit and also the power supplied by the source:
Frequency (kHz)
PR
(W)
PS
(W)
1
2
3
Table 5 – Source Power and Power Dissipation
B. MultiSim Simulation and Circuit Calculations
1. Launch MultiSim; build the circuit schematic shown in Figure 2. Include the AC power source and the DMMs.
Figure 2 – MultiSim RC Circuit with Instrumentation
Note# 1: The Multisim AC Power Source has the facility to choose RMS value (2.5 V) for the voltage in addition to the frequency and the phase of your choice.
Note# 2: You could choose any one frequency (1kHz, 2 kHz or 3 kHz) for the source from section A. The figure below shows source frequency as 1 kHz, for example.
2. Set the RMS value to 2.5 V and select one of the frequencies (1 kHz, 2 kHz, or 3 kHz) used in Section A.
3. Activate the simulation and record the voltage and current reading in Table 5.
Frequency (kHz)
IS (RMS)
(Amps)
VC (RMS)
(Volts)
VR (RMS) (Volts)
Table 5 – MultiSim Simulation Results
4. Do the (simulated) voltage and the current values in Table 5 agree with those obtained in Tables, 2, 3 and 4 of Part A? (Circle your answer)
YES NO
5. Remove the DMMs from the circuit and attach the wattmeter as shown below:
Figure 3 – AC Power Measurement with Wattmeter
6. Turn the simulator ON and record the power measurements in Table 6.
Frequency
(kHz)
Source Power, PS
(Watts)
Power Factor
Table 6 – Power Measurement Readings
7. Do the numbers in Tables 6 and 2 agree?
If there is any disagreement, investigate the source of error and report your findings below:
C. Construction of a Series R C Circuit on a proto board and Measurement of Circuit Characteristics
1. Construct the circuit in Figure 1.
2. Set the function generator voltage to 2.5 V RMS. Set the frequency to the same value used in the simulator experiment.
3. Set DMM to measure AC current and make the appropriate connections. Switch the function generator power ON.
4. Record the current reading.
IS = _____________ (A)
5. Is this the same as the simulated value and the calculated value? ________ (YES or NO)
6. Switch OFF the AC input power. Remove the DMM and reconfigure it to measure voltages. Reconnect the circuit and apply power. Measure the voltage across C and R one at a time.
7. Record these voltages.
VC = ________ (V) VR = ________(V)
Are the voltage readings the same as your calculated and simulated values?
__________ (YES or NO)
8. If you answered NO, explain why you think they differ.
IV. TROUBLESHOOTING
Describe any problems encountered and how those problems were solved.
Course Number: ECET-210 Laboratory Number: 3 Page 6 of 6
Function
Generator
C = 100 nFR = 1 kΩ
V
R
V
C
+
V
S
= 2.5 V
RMS
AC
C = 100 nF
R = 1 kΩ
VR
VC
+
Function Generator
VS = 2.5 VRMS
Laboratory Report Cover Sheet
DeVry University
College of Engineering and Information Sciences
Course Number: ECET210
Professor:
Laboratory Number: 3
Laboratory Title: Analysis of AC Series RC Circuit using Simulation and Construction
Submittal Date: Click here to enter a date.
Objectives:
Results:
Conclusions:
|
Team: |
||||||||
|
Name |
Program |
Signature |
||||||
Observations/Measurements:
III. A. 1. RC Circuit Calculated Impedance Values:
Frequency (kHz)
Reactance, XC
(Ω)
Total Circuit AC Impedance, ZT
Complex Notation
Magnitude
Angle
1
2
3
III. A. 2. RC Circuit Calculated Values:
Frequency (kHz)
IS (RMS) – (A)
Power Factor
Complex Form
Magnitude
Angle
1
2
3
Frequency (kHz)
VC (RMS) – (Volts)
Complex Form
Magnitude
Angle
1
2
3
Frequency (kHz)
VR (RMS) – (Volts)
{VC + VR}(RMS) –
(Volts)
Complex Form
Magnitude
Angle
1
2
3
III. A. 3. Voltage Drops Across R and C Equal VRMS:
Match? Yes _____ No ______
Explanation:
III A. 4. RL Circuit Calculated Power Dissipation:
Frequency (kHz)
PR
(W)
PS
(W)
1
2
3
III. B. 5. RL Circuit Simulation Results:
Frequency (kHz)
IS (RMS)
(Amps)
VC (RMS)
(Volts)
VR (RMS) (Volts)
III. B. 6. Simulation Values Match Calculated Values:
Match? Yes _____ No ______
III. B. 8. RL Circuit Simulated Power Measurement:
Frequency
(kHz)
Source Power, PS
(Watts)
Power Factor
III. B. 9. Simulation Values Match Calculated Values:
Match? Yes _____ No ______
Explain any mismatch:
III. C. 4. RL Circuit Measured Current:
IS = _____________ (A)
III. C. 5. Value Matches Calculated and Simulated Values:
Match? Yes _____ No ______
III. C. 7. RL Circuit Measured Voltages:
VC = ________ (V) VR = ________(V)
Match? Yes _____ No ______
Questions:
1. Is the power supplied by the source the same as that dissipated in the resistor?
2. Define the dissipation factor or the loss angle (a.k.a. tan(δ) ) of a capacitor.
3. What term is used to describe the power lost in the capacitor? What units are used?
4. Construct a Phasor Diagram to represent the source voltage, source current, voltage drops, VR and VC across the resistor and the capacitor. The diagram need not be drawn to scale. The values of the items represented, however, must be included in the diagram.
5. Can the phase information be obtained from an oscilloscope? Yes No
Grade:
Deliverable
Points Available
Points Achieved
Laboratory Cover Sheet
8
Working Circuit(s)/Program(s)
8
Observations/Measurements
6
Questions
8
Total Points
30
Comments:
Laboratory Procedures
DeVry University
College of Engineering and Information Sciences
I. OBJECTIVES
1.
To analyze a parallel AC circuit containing a resistor (R), an inductor (L), and a capacitor (C).
2. To simulate the RLC circuit and observe the circuit responses.
3. To build the RLC circuit and measure the circuit responses.
II.
PARTS LIST
Equipment:
IBM PC or Compatible
Function Generator
DMM (Digital Multimeter)
Parts:
1 – 470 Ω Resistor 1 – 1 µF Capacitor
1 – 47 mH Inductor
Software:
MultiSim 11
III. PROCEDURE
A. Theoretical Analysis
1. Given the R, L, & C parallel circuit in Figure 1, calculate the total equivalent admittance, YT, and the impedance, ZT, of the circuit at f = 550 Hz and 1 kHz. List the calculated values in Table 1.
Figure 1: Parallel R, C, L Circuit
Frequency Hz
L & C Admittances in Rectangular Form
Inductor
GL – jBL
Capacitor
GC + jBC
550
1000
Frequency Hz
Total Circuit Admittance YT
Rectangular Form
GT + jBT
Magnitude
Angle
550
1000
Frequency Hz
Total Circuit Impedance ZT
Rectangular Form
RT + jXT
Magnitude
Angle
550
1000
Table 1 – Calculated RLC Admittance and Impedance Values
2. Calculate and record the following quantities:
Frequency Hz
IR (RMS). A
IC (RMS), A
IL (RMS). A
Magnitude
Angle
Magnitude
Angle
Magnitude
Angle
550
1000
Frequency Hz
{IR + IC + IL }= IS (RMS), A
IS = V * YT
Rectangular Form
Magnitude
Angle
Magnitude
Angle
550
1000
Table 2 – Calculated RLC Component Current Values
Does the sum of the magnitudes of the three currents IR, IC, and IL, in the table above, equal the current, IS, calculated directly in the last column?
(YES or NO)
Explain why your answer is what it is.
3. Calculate the power dissipated by the parallel resistor and the power supplied by the source:
Frequency Hz
PR, W
PS, W
550
1000
Table 3 – Calculated RLC Resistor Power Dissipation
B. Multisim Simulation and Circuit Calculations
1. Launch MultiSim and build the circuit schematic shown in Figure 2. Include the AC Power source and the DMMs.
2. Set both DMMs, XMM1 thru’ XMM4, to read AC measurements and Current, I. See fig. 2 below.
Figure 2: MultiSim RLC Parallel Circuit with Instrumentation
3. Activate the simulation and record the current readings for both frequencies:
Frequency Hz
IS (RMS), A
IR (RMS), A
IC (RMS), A
IL (RMS), A
550
1000
Table 4 – Current Measurements Simulation Results
4. Do the current values in Table 4 agree with those obtained in Tables, 2, 3, & 4 of Part A? (Circle your answer)
YES NO
5. Remove the DMMs and attach the wattmeter as shown below:
Figure 3 – AC Power Measurement
6. Record the measurement from the wattmeter.
Frequency
Hz
Source Power, PS
(Watts)
Power Factor
550
1000
Table 5 – Power Measurement Readings
7. Do values in the Tables 6 and 2 agree?
(Circle your answer)
YES NO
If there is any disagreement investigate the source of error and report your findings below:
C. Construction of a Parallel R, L, C Circuit and Measurement of Circuit Characteristics
1. Construct the circuit in Figure 1.
2. Set the function generator voltage to 2.5 V RMS and the frequency value to 550 Hz.
3. Turn the circuit on.
4. Record the current reading.
IS = _____________ (A)
5. Is this the same as the simulated and calculated value? ________ (YES or NO)
6. Measure and record the branch currents:
IR = ________ (A) IC = ________(A) IL = ________(A)
Are the current readings the same as your calculated and simulated values?
(Circle your answer)
YES NO
If you answered NO, explain why you think they differ.
7. Repeat Steps 2 through 6 with the frequency generator set to output at 1000 Hz.
IS = ______________(A)
IR = ________ (A) IC = ________(A) IL = ________(A)
Are the current readings the same as your calculated and simulated values?
(Circle your answer)
YES NO
If you answered NO, explain why you think they differ.
IV. TROUBLESHOOTING
Describe any problems encountered and how those problems were solved.
Function
Generator
V
S
= 2.5 V
RMS
C
=
1
µ
F
R
=
4
7
0
Ω
I
R
I
C
+
I
S
f = 550 Hz
I
L
L
=
4
7
m
H
R
L
AC
C = 1 µF
R = 470 Ω
IS
f = 550 Hz
IL
IR
IC
+
Function Generator
RL
L = 47 mH
VS = 2.5 VRMS
Laboratory Report Cover Sheet
DeVry University
College of Engineering and Information Sciences
Course Number: ECET210
Professor:
Laboratory Number: 4
Laboratory Title: Analysis of AC Parallel RLC Circuit using Simulation and Construction
Submittal Date: Click here to enter a date.
Objectives:
Results:
Conclusions:
|
Team: |
||||||||
|
Name |
Program |
Signature |
||||||
Observations/Measurements:
III. A. 1. RLC Circuit Calculated Impedance and Admittance Values:
Frequency Hz
Susceptance, Siemens
Inductive, BL
Capacitive, BC
550
1000
Frequency Hz
Total Circuit AC Admittance, YT
Complex Notation
Magnitude
Angle
550
1000
Frequency Hz
Total Circuit AC Impedance, ZT
Complex Notation
Magnitude
Angle
550
1000
III. A. 2. RLC Circuit Calculated Current Values:
Frequency Hz
IR (RMS). A
IC (RMS), A
IL (RMS). A
Magnitude
Angle
Magnitude
Angle
Magnitude
Angle
550
1000
Frequency Hz
{IR + IC + IL }= IS (RMS), A
IS = V * YT
Complex Form
Magnitude
Angle
Magnitude
Angle
550
1000
Match? Yes _____ No ______
Explanation:
III A. 3. RLC Circuit Calculated Power Dissipation:
Frequency Hz
PR, W
PS, W
550
1000
III. B. 3. RLC Circuit Simulation Results:
Frequency Hz
IS (RMS), A
IR (RMS), A
IC (RMS), A
IL (RMS), A
550
1000
III. B. 4. Simulation Values Match Calculated Values:
Match? Yes _____ No ______
III. B. 6. RLC Circuit Simulated Power Measurement:
Frequency
Hz
Source Power, PS
(Watts)
Power Factor
550
1000
III. B. 7. Simulation Values Match Calculated Values:
Match? Yes _____ No ______
Explain any mismatch:
III. C. 4. RLC Circuit Measured Current at 550 Hz:
IS = _____________ (A)
III. C. 5. Value Matches Calculated and Simulated Values:
Match? Yes _____ No ______
III. C. 6. RL Circuit Measured Currents:
IR = ________(A) IC = ________(A) IL = ________(A)
Match? Yes _____ No ______
Explain any mismatch:
III. C. 7. RLC Circuit Measured Current at 1000 Hz:
IS = _____________ (A)
IR = ________(A) IC = ________(A) IL = ________(A)
Match? Yes _____ No ______
Explain any mismatch:
Questions:
1. Construct a Phasor Diagram to represent the source current and the branch currents, IR, IC, and IL through the resistor, capacitor, and the inductor. The diagram does not need to be drawn to scale. However, the values of the items represented must be included in the diagram.
2. Did you notice any interesting feature in the lab exercise with regard to the two different frequencies chosen for the experiment?
3. In the Multisim simulation, change the frequency of the source to be between 725Hz to 735 Hz (in increments of 2 Hz) and record the inductor and the capacitor currents.
Frequency, Hz
IR, mA
IC, mA
IL, mA
725
727
729
731
733
735
What do you notice from the readings?
Grade:
Deliverable
Points Available
Points Achieved
Laboratory Cover Sheet
8
Working Circuit(s)/Program(s)
8
Observations/Measurements
6
Questions
8
Total Points
30
Comments:
