EEN1016 Electronics I - Faculty of Engineering - Multimedia University

EEN1016 Electronics I: Appendices
4.3 Clipping Circuits
Procedures
1. Construct the circuit as shown below.
signal
in
+
–
signal
ground
V I
1 : 1
+
–
V S
1kΩ
D
+
V O
–
oscilloscope oscillascope
2. Align the channel ground levels. Adjust and align the CH1 waveform as mentioned in
Procedure 2 of Experiment 4.1. Sketch V o waveform displayed on the oscilloscope on
Graph E4.3 (a) and label the waveform with V DC = 0 V. Record V o,max and V o,min in Table
E4.3 (a) under V DC = 0 V column.
3. Set the DC Power Supply to 0 V. Set the current scale switch to LO (if any). Set the
current adjustment knob to about ¼ turn from the min position. Make sure that the
negative terminal of the DC power supply is not connected to the ground.
4. Switch off the DC power supply and connect it to the circuit as shown below.
signal
in
+
–
signal
ground
V I
1 : 1
+
–
V S
1kΩ
V DC
D
+
–
DC
+
V O
–
oscilloscope oscillascope
5. Switch on the DC power supply. Set it to V DC = 2 V (measured by a multimeter accurate
to 0.1 V). Sketch V o waveform on Graph E4.3 (a). Record V o, max and V o,min in Table E4.3
(a). Repeat for V DC = 4 V and 6 V (accurate to 0.1 V). Label the waveforms.
6. Switch off the DC power supply. Construct the circuit as shown below.
signal
in
+
–
signal
ground
V I
1 : 1
+
–
V S
D
1kΩ
V DC
+
–
DC
+
V O
–
oscilloscope oscillascope
7. Switch on the DC power supply. Set it to V DC = 0 V (turn the voltage knob of the power
supply to the minimum position and then short the power supply output with a wire).
Sketch V o waveform on Graph E4.3 (b). Record V o, max and V o,min in Table E4.3 (b).
Repeat for V DC = 2, 4 and 6 V (accurate to 0.1 V). Label the waveforms.
8. Switch off the power supply and reconnect it to the circuit as shown below.
signal
in
+
–
signal
ground
V I
1 : 1
+
–
V S
D
V DC
1kΩ
–
+
DC
+
V O
–
oscilloscope oscillascope
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