LAB Assignment
Power Amplifiers
INTRODUCTION
Discuss some of the basic differences between the operation of a class A, B and C amplifiers.
EQUIPMENT
- 1 power supply: 12V
- 1 transistor: 2N3904
- 2 resistors: 1kΩ, 50kΩ
- 3 capacitors: 0.1µF, 0.01µF, 560pF
- 1 inductor: 38.07µH
- Tektronix oscilloscope
- Waveform generator
PROCEDURE
Using Multisim construct the circuit shown below:
Calculate the resonant frequency fr - show your work and record the answer in row 1 of the table.
a. Use the Waveform generator to produce an input: 2.5Vpk and frequency set to the resonant frequency.
b. Use the Tektronix oscilloscope to measure fout and record it in the table
c. Take a screen shot of circuit showing the frequency measurement on the oscilloscope.
d. Repeat steps a) and c) for each input frequency in the table.
RESULTS
|
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fin
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fout
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1
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fr =
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2
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1500kHz
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|
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3
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300kHz
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4
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546kHz
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|
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5
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273kHz
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6
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873kHz
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Discuss the results.
CONCLUSION
What is the function of this circuit?
What did you learn?