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week1_lab.docx

· 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:

figure 1

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.

a. Use the Tektronix oscilloscope to measure fout and record it in the table

a. Take a screen shot of circuit showing the frequency measurement on the oscilloscope.

a. Repeat steps a) and c) for each input frequency in the table.

RESULTS

 

fin

fout

1

fr =

 

2

1500kHz

 

3

300kHz

 

4

546kHz

 

5

273kHz

 

6

873kHz

 

Discuss the results.

CONCLUSION

What is the function of this circuit?

What did you learn?

Please fill out and use the following Lab Report Template when submitting your lab work.

Please read and follow the guidelines given in the Solutions Template in submitting all of your lab work.