Download HALF WAVE AND FULL WAVE RECTIFIER CIRCUITS

LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
FAKULTI KEJURUTERAAN MEKANIKAL
UNIVERSITI TEKNOLOGI MALAYSIA
KAMPUS SKUDAI
JOHOR
SKMM 2921
ELECTRIC LABORATORY
EXPERIMENT-2
HALF WAVE AND FULL WAVE
RECTIFIER CIRCUITS
Prepared by:
1. Dr. Bambang Supriyo
Approved by: Head of Department
Name:
Signature and Stamp:
Signature and Stamp:
Date:
Date:
1
LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
I.
PRELIMINARY EXERCISE
Important Note: You are required to do this BEFORE the lab session
1. Search in the various literature sources, at least five (5) sources, (book, journal,
proceeding, conference paper or internet) and write short introduction, basic theory of
diode, half wave rectifier circuit and 4-diode full wave rectifier circuit.
2. Describe how half wave rectifier circuit and 4-diode full wave rectifier work.
3. Write down relationship between peak, root mean square (rms) and average (DC) values
of half wave and full wave rectified sinusoidal signal.
4. For load resistor and capacitor, write down average (DC) values of half wave and full
wave rectified sinusoidal signal output related to both output frequency and peak-to-peak
ripple voltage.
5. List down your literature sources and use as Reference in your Laboratory Short Report.
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LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
II. EXPERIMENT
Half Wave and Full Wave Rectifier Circuits
1. Aims:
a. To build a half wave and full wave rectifier circuits
b. To measure and record their voltages and output curves.
c. To investigate the influence of load resistor and capacitor on the output voltage.
2. Equipments
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Quantity
1
4
2
2
1
1
1
4
1
1
1
1
2
1
1
2
Item
Rastered socket panel
Bridging plug
Connecting lead, red, 25 cm
Connecting lead, blue, 25 cm
Connecting lead, red, 50 cm
Connecting lead, blue, 50 cm
Resistor 100 Ω
Diode BY255
Resistor 1 kΩ
Capacitor 100 uF / 40V
Capacitor 470 uF / 40V
Capacitor 1000 uF / 40V
Multimeter (Voltmeter)
AC Power Supply (12Vac, CT [0 V])
Dual Channel Oscilloscope
Cable probe oscilloscope
Code
576 74
501 48
500 411
500 412
500 421
500 422
3. Procedure
Precaution: Make sure the AC power supply switch is turned off before starting the
experiment.
Initial set up: please make sure that the oscilloscope has been correctly set for amplitude,
frequency and zero volt adjustments. Set the oscilloscope switches as follows:

MODE : - CH1 (Channel 1) for single channel; DUAL for two channels

VERTICAL

HORIZONTAL : TIME / DIV = 2 ms
: VOLTS/DIV = 5 V
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LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI

Input Coupling : AC for AC measurement, GND for 0 V and DC for DC
measurement.

TRIGGER MODE : AUTO; TRIGGER SOURCE : CH1
a. Half Wave Rectifier Circuit with Load Resistor
1. Set up the experimental circuit as shown in Figure 1.
AC POWER SUPPLY
DC VOLTMETER (VDC)
ON
Power Switch
OFF
CT
12 Vac
COM V
OSCILLOSCOPE
Diode
CH1
Resistor
Gnd
CH2
Gnd
Figure 1.
2. Select 12 Vac and Center Tap (CT= 0 Vac) from the AC power supply as the
input voltage.
3. Use Resistor 1 kΩ as a load resistor.
4. Check carefully to ensure that the circuit connection is correct.
5. Turn on the oscilloscope switch and the AC power supply switch.
6. Measure the output voltage across the output resistor using DC voltmeter (VDC),
and record in Table 1.
7. Draw the input and output voltage curves displayed on the Oscilloscope.
8. Record the input peak voltages (VPI) and output peak voltages (VPO) in Table 1.
9. Turn off the AC power supply switch and the oscilloscope switch.
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LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
b. Half Wave Rectifier Circuit with Load Resistor and Capacitor
1. Set up the experimental circuit as shown in Figure 2.
AC POWER SUPPLY
DC VOLTMETER (VDC)
ON
Power Switch
OFF
CT
12 Vac
COM V
OSCILLOSCOPE
Diode
CH1
Resistor
CH2
Capacitor
Gnd
Gnd
Figure 2.
2. Select 12 Vac and Center Tap (CT= 0 Vac) from the AC power supply as the
input voltage.
3. Use Resistor of 1 kΩ as a load resistor and Capacitor of 100 uF as a load
Capacitor. (Warning : beware of capacitor polarity. Make sure the positive pin is
connected to the positive voltage of load resistor and the negative pin is
connected to the lower voltage of load resistor [0 V])
4. Check carefully to ensure that the circuit connection is correct.
5. Turn on the oscilloscope switch and the AC power supply switch.
6. Measure the output voltage across the output resistor using DC voltmeter (VDC).
7. Draw output voltage curves displayed on the Oscilloscope.
8. Turn off the AC power supply switch
9. Repeat step (b.3) to (b.8) for Capacitor of 470 uF and 1000 uF, respectively,
record in Tables 2.
5
LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
10. Repeat step (b.3) to (b.8) for Resistor 100 Ω and Capacitor of 470 uF. Record in
Table 3.
11. Repeat step (b.3) to (b.8) for Resistor 10 kΩ and Capacitor of 470 uF. Record in
Table 3.
12. Turn off the oscilloscope switch
c. Full Wave Rectifier Circuit with Load Resistor
1. Set up the experimental circuit as shown in Figure 3.
AC POWER SUPPLY
DC VOLTMETER (VDC)
ON
Power Switch
OFF
CT
12 Vac
COM V
OSCILLOSCOPE
c
CH1
Resistor
a
CH2
Gnd
d
b
Diode
Figure 3.
2. Select 12 Vac and Center Tap (CT= 0 Vac) from the AC power supply as the
input voltage.
3. Use Resistor 1 kΩ as a load resistor.
4. Check carefully to ensure that the circuit connection is correct.
5. Turn on the oscilloscope switch and the AC power supply switch.
6
LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
6. Measure the output voltage across the output resistor using DC voltmeter (VDC),
and record in Table 4.
7. Connect the probe channel1 (CH1) to points a and b as shown in Figure 3, to
obtain the input voltage curve.
8. Connect the probe channel1 (CH1) to points c and d as shown in Figure 3, to
obtain the output voltage curve.
9. Draw the input and output voltage curves displayed on the Oscilloscope.
10. Record the input peak voltages (VPI) and output peak voltages (VPO) in Table 4.
11. Turn off the AC power supply switch and the oscilloscope switch
d. Full Wave Rectifier Circuit with Load Resistor and Capacitor
1. Set up the experimental circuit as shown in Figure 4.
AC POWER SUPPLY
DC VOLTMETER (VDC)
ON
Power Switch
OFF
CT
12 Vac
COM V
OSCILLOSCOPE
CH1
Capacitor
Resistor
Diode
Figure 4.
7
Gnd
CH2
LAB SHEET-Experiment-2
ELECTRIC LAB (SKMMV2921), FKM UTM SKUDAI
2. Select 12 Vac and Center Tap (CT= 0 Vac) from the AC power supply as the
input voltage.
3. Use Resistor of 1 kΩ as a load resistor and Capacitor of 100 uF as a load
Capacitor. (Warning : beware of capacitor polarity. Make sure the positive pin is
connected to the positive voltage of load resistor and the negative pin is
connected to the lower voltage of load resistor [0 V])
4. Check carefully to ensure that the circuit connection is correct.
5. Turn on the oscilloscope switch and the AC power supply switch.
6. Measure the output voltage across the output resistor using DC voltmeter (VDC),
7. Draw output voltage curves displayed on the Oscilloscope.
8. Turn off the AC power supply switch
9. Repeat step (d.3) to (d.8) for Capacitor of 470 uF and 1000 uF, respectively,
record in Table 5.
10. Repeat step (d.3) to (d.8) for Resistor 100 Ω and Capacitor of 470 uF, record in
Table 6.
11. Repeat step (d.3) to (d.8) for Resistor 10 kΩ and Capacitor of 470 uF, record in
Table 6.
12. Turn off the oscilloscope switch.
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