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ECET210
Laboratory 7
Voltage Rectifier and Voltage Regulation Circuits
I. OBJECTIVES
1. To analyze the characteristics of rectifying diode using theoretical, simulation, and physical construction of the circuit.
2. To analyze the characteristics of voltage regulation (zener diode and voltage regulator) using theoretical, simulation, and physical construction of the circuit.
II. PARTS / Equipment List:
Equipment:
IBM PC or compatible
Function Generator
DMM (digital multimeter)
Oscilloscope
Parts:
Qty.
Component
Tolerance Band
Wattage Rating, W
1
1N4004
1
1 kΩ Resistor
±5%
¼
1
10 kΩ Resistor
gold
¼
1
27 kΩ Resistor
gold
¼
1
30 kΩ Resistor
gold
¼
Other resistors as needed for the design of op-amp circuits
gold
¼
1
Proto Board
3
BNC to split-ends cable
Hook-up wires of different colors
Software:
MultiSim 11
III. PROCEDURE
A.
Theoretical analysis of the rectifier diode
1. Given the circuit in Figure 1, the resistor R1 has a resistance of 1.0 kΩ. Sketch the theoretical waveforms for the input (CH-1) signal and the output (CH-2) signal when a 10 VPP 1.0 kHz sine wave is applied to the circuit, Record the positive and negative peak voltages and average voltage for both the input and output signals. Enter the results in Table 1.
Figure 1 – Rectifier circuit
B. MultiSim simulation of the rectifier diode circuit
1. Enter the circuit shown in Figure 1 in Multisim.
2. Connect the Agilent oscilloscope to the circuit. Channel 1 across the function generator and Channel 2 across the resistor R1. The resistor R1 has a resistance of 1.0 kΩ. Capture the waveforms for the input (CH-1) signal and the output (CH-2) signal when a 10 VPP 1.0 kHz sine wave is applied to the circuit, Record the positive and negative peak voltages and average voltage for both the input and output signals. Enter the results in Table 1.
C. Construction of the rectifier diode circuit
1. Construct the circuit in Figure 1. (For on-line students: Take a picture of your circuit and place it on the worksheet.)
2. Record the input and output signal waveforms (either sketch the signals or capture the scope image). Obtain the positive and negative peak voltages and average voltage for the input and output signals. Enter the results in Table 1.
3. Compare the theoretical, simulation, and hardware circuit results, and enter your comments on the worksheet.
D. Theoretical analysis of the filtered rectified circuit
1. Given the circuit in Figure 2, the resistor R1 has a resistance of 1.0 kΩ and the capacitor has a capacitance of 10 µF. Sketch the theoretical waveforms for the input (CH-1) signal and the output (CH-2) signal when a 10 VPP 1.0 kHz sine wave is applied to the circuit, Record the positive and negative peak voltages and average voltage for both the input and output signals. Enter the results in Table 2.
Figure 2 – Filtered rectified circuit
E. MultiSim Simulation of the filtered rectified circuit
1. Enter the circuit shown in Figure 2 in MultiSim.
2. Connect the Agilent oscilloscope to the circuit. Channel 1 across the function generator and Channel 2 across the resistor R1. The resistance of R1 is 1.0 kΩ and the capacitance of C1 is 10 µF. Capture the waveforms for the input (CH-1) signal and the output (CH-2) signal when a 10 VPP 1.0 kHz sine wave is applied to the circuit, Record the positive and negative peak voltages and average voltage for both the input and output signals. Enter the results in Table 2.
F. Construction of the filtered rectified circuit
1. Construct the circuit in Figure 2. (For on-line students: Take a picture of your circuit and place it on the worksheet.)
2. Record the input and output signal waveforms (either sketch the signals or capture the scope image). Obtain the positive and negative peak voltages and average voltage for the input and output signals. Enter the results in Table 2.
3. Compare the theoretical, simulation, and hardware circuit results, and enter your comments on the worksheet.
G. Voltage Regulation using the zener diode
1. Construct the circuit shown in Figure 3 on MultiSim. .
2. Connect the Agilent oscilloscope to the circuit. Channel 1 across the function generator and Channel 2 across the resistor R1. The resistance of R1 is 1.0 kΩ, the resistance of R2 is 100 Ω and the capacitance of C1 is 10 µF. Capture the waveforms for the input (CH-1) signal and the output (CH-2) signal when a 20 VPP 1.0 kHz sine wave is applied to the circuit, Record the positive and negative peak voltages and average voltage for both the input and output signals.
Figure 3 – Zener diode regulation circuit
H. Voltage Regulation using the voltage regulator
1. Construct the circuit shown in Figure 4 on MultiSim. .
2. Connect the Agilent oscilloscope to the circuit. Channel 1 across the function generator and Channel 2 across the resistor R1. The resistance of R1 is 1.0 kΩ, the capacitance of C1 is 10 µF, and the capacitance of C2 and C3 is 0.1 µF. Capture the waveforms for the input (CH-1) signal and the output (CH-2) signal when a 20 VPP 1.0 kHz sine wave is applied to the circuit, Record the positive and negative peak voltages and average voltage for both the input and output signals.
3. Comment on the observations made using the zener diode and the voltage regulator for voltage regulation.
Figure 4 – Voltage Regulator circuit
IV. QUESTIONS:
Answer the following questions on the worksheet.
1. What would be different about the signal waveforms if the diode D1 is reversed?
2. Why would an individual desire to use a capacitor after the diode rectifier? What impact does the value of the capacitor have on the filter rectified circuit?
3. For negative voltages, what voltage regulator(s) would you suggest to use?
4. If an individual needs a positive voltage other than 5 V, what voltage regulator would you recommend? What must be the regulator input voltage for this voltage regulator to operate properly?
ECET-210 Lab 7 Instructions DeVry University Page 1 of 5
CH-2
CH-1
e
s
R1
D1
1N4004
1
2
GND
CH-2
CH-1
e
s
R1
D1
1N4004
12
GND
CH-1
e
s
CH-2
D1
1N4004
1
2
R1
C
1
CH-1
e
s
CH-2
D1
1N4004
12
R1
C1
R2
CH-1
CH-2
C
1
D2
1N4733
D1
1N4004
1
2
e
s
R1
R2
CH-1
CH-2
C1
D2
1N4733
D1
1N4004
12
e
s
R1
CH-2
D1
1N4004
1
2
C1
U1
LM7805
1
3
2
VIN
GND
VOUT
C3
CH-1
R1
C2
e
s
CH-2
D1
1N4004
12
C1
U1
LM7805
1
3
2
VIN
GND
VOUT
C3
CH-1
R1
C2
e
s
Laboratory Report Cover/Worksheet
DeVry University
College of Engineering and Information Sciences
Course Number: ECET210
Professor:
Laboratory Number: 7
Laboratory Title: Voltage Rectifier and Voltage Regulation Circuits
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. 1. A. Theoretical analysis of the rectifier diode:
Sketch the input and output signal waveforms. Record the positive and negative peak voltages and average voltage for the input and output signals. Enter the data in Table 1 under the Theoretical column.
CH-1
CH-2
Voltage (V)
Theoretical
Simulation
Experimental
CH-1
Positive Peak
Voltage
Negative Peak
Voltage
Average
Voltage
CH-2
Positive Peak
Voltage
Negative Peak
Voltage
Average
Voltage
Table 1 – Rectifier data
III. B. 2. Multisim simulation of the rectifier circuit:
Insert the Multisim capture of the input CH-1 and output CH-2 waveforms here. Record the positive and negative peak voltages and average voltage for the input and output signals. Enter the data in Table 1 under the Simulation column.
III. C. 1. Online: Place a digital photo of your circuit below:
III. C. 2. Hardware circuit of the Rectifier circuit:
Measure and record the positive and negative peak voltages and average voltage for the input and output signals. Enter the data in Table 1 under the Experimental column.
Either sketch the scope CH-1 and CH-2 waveforms here or insert the picture captured of the scope CH-1 and CH-2 waveforms here.
III. C. 3. Compare and comment on any differences and similarity between the Theoretical, Simulation and Experimental results.
Comments:
III. D. 1. Theoretical analysis of the filtered rectified circuit:
Sketch the input and output signal waveforms. Record the positive and negative peak voltages and average voltage for the input and output signals. Enter the data in Table 2 under the Theoretical column.
CH-1
CH-2
Voltage (V)
Theoretical
Simulation
Experimental
CH-1
Positive Peak
Voltage
Negative Peak
Voltage
Average
Voltage
CH-2
Positive Peak
Voltage
Negative Peak
Voltage
Average
Voltage
Table 2 – Filtered Rectifier data
III. E. 2. Multisim simulation of the filtered rectifier circuit:
Insert the Multisim capture of the input CH-1 and output CH-2 waveforms here. Record the positive and negative peak voltages and average voltage for the input and output signals. Enter the data in Table 2 under the Simulation column.
III. F. 1. Online: Place a digital photo of your circuit below:
III. F. 2. Hardware circuit of the Filtered Rectifier circuit:
Measure and record the positive and negative peak voltages and average voltage for the input and output signals. Enter the data in Table 2 under the Experimental column.
Either sketch the scope CH-1 and CH-2 waveforms here or insert the picture captured of the scope CH-1 and CH-2 waveforms here.
III. F. 3. Compare and comment on any differences and similarity between the Theoretical, Simulation and Experimental results.
Comments:
III. G. 2. Copy and paste the Multisim oscilloscope display of input and output signals below:
III. H. 2. Copy and paste the Multisim oscilloscope display of input and output signals below:
III. H. 3. Comment on the zener diode and voltage regulator regulation circuits:
Comments:
IV. Answer the following questions on the worksheet:
1. What would be different about the signal waveforms if the diode D1 is reversed?
2. Why would an individual desire to use a capacitor after the diode rectifier? What impact does the value of the capacitor have on the filter rectified circuit?
3. For negative voltages, what voltage regulator(s) would you suggest to use?
4. If an individual needs a positive voltage other than 5 V, what voltage regulator would you recommend? What must be the regulator input voltage for this voltage regulator to operate properly?
Deliverable
Points Available
Points Achieved
Laboratory Cover page
5
Working Circuit(s)/Simulation
8
Observations/Measurements
10
Questions
7
Total Points
30
Comments:
ECET-210 Lab 7 Worksheet DeVry University Page 1 of 6
