1. Joseph Chandler December 11, 2013
Introduction
The project introduces the effects of a common emitter amplifier. It is composed of a BJT
transistor and other circuit components.
Procedures
The project uses Pspice software to analyze the BJT transistor and how it effects the common-
emitter amplifier.
Solutions
Figure 1 BJT Transistor Characteristics

2. Joseph Chandler December 11, 2013
Figure 2. 5uA
Figure 3. 10 uA
Figure 4. 15 uA

3. Joseph Chandler December 11, 2013
Figure 5. 20 uA
Figure 6. 30 uA
Figure 7. 40uA

4. Joseph Chandler December 11, 2013
Figure 8. 50uA
Figure 9. 0-50 uA
Figure 10. BJT common emitter amplifier

5. Joseph Chandler December 11, 2013
Figure 11. Input swing and output swing
Figure 12. BJT common emitter amplifier
Figure 13. Gain vs Frequency

6. Joseph Chandler December 11, 2013
Conclusion
The CommonEmitterAmplifierhasaresistorinthe collectorcircuitthat allowscurrentthroughand
producesthe voltage outputof the amplifier.The resistorischoseninaccordance tothe transistor's
loadlines.The base hasa steadyvoltage forstabilitywhichiscausedbya reductioninthe varyingof
beta.It isa greattool for amplifyingvoltage andcurrent.