Laboratory Manual - King Fahd University of Petroleum and Minerals
Laboratory Manual - King Fahd University of Petroleum and Minerals
Laboratory Manual - King Fahd University of Petroleum and Minerals
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R1 3 0 1MEG<br />
C1 3 0 0.031uF<br />
GM2 0 7 3 0 10m<br />
R2 7 0 1K<br />
C2 7 0 39.8pF<br />
GM3 0 4 7 0 1m<br />
R0 4 0 1K<br />
DL1 4 5 DIODE<br />
DL2 6 4 DIODE<br />
VL1 5 0 DC 13V<br />
VL2 0 6 DC 13V<br />
.MODEL DIODE D<br />
.ENDS<br />
.END<br />
Figure 5: Example for SPICE file to simulate sinsoudal oscillators.<br />
4. Tabulate the results obtained from your h<strong>and</strong> calculations <strong>and</strong> from SPICE simulation<br />
in Table I.<br />
EXPERIMENTAL WORK<br />
1. Assemble the circuit shown in Figure 1 using your design values. Change the variable<br />
resistance until you get an output on the oscilloscope. This means that your circuit is<br />
oscillating. Record frequency <strong>of</strong> oscillation <strong>and</strong> the value <strong>of</strong> the resistance at which<br />
oscillation just starts to appear on the oscilloscope in Table I.<br />
2. Repeat step 1 for circuit shown in Figure 2 for two cases R 5 =R 8 =5kΩ <strong>and</strong><br />
R 5 =R 8 =5kΩ. Use R 6 =R 7 =1kΩ.<br />
3. Repeat step 1 for circuit shown in Figure 3.<br />
4. Repeat step 1 for circuit shown in Figure 4.<br />
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