Hi Folks,
Common source amplifier with resistive is explained with the help of a small signal model.
Voltage gain calculation is done for it!
1) Introduction: Start by introducing the concept of voltage gain and the need for practical amplifier models in electronic circuits. Introduce the applicable amplifier model and explain its essential characteristics.
2) Practical Amplifier Model: Explain the characteristics of a practical amplifier model, including finite voltage gain, finite input impedance, and non-zero output impedance. Discuss the advantages and limitations of using a practical amplifier model in circuit design.
3) Voltage Gain Calculation: Show how to calculate the practical amplifier model's voltage gain (Av) without drawing a small signal model, using the formula Av = Vo/Vi, where Vo is the output voltage and Vi is the input voltage. Emphasize the significance of voltage gain in amplifier design and how it affects the overall performance of the circuit.
4) Input and Output Impedance: Explain the input and output impedance of the practical amplifier model, and discuss how they affect the performance of the amplifier. Emphasize the importance of high input impedance to avoid loading effects and low output impedance to drive loads effectively. Also, discuss the effect of feedback on the input and output impedance of the amplifier.
5) Frequency Response: Discuss the frequency response of the practical amplifier model and how it can be analyzed without drawing a small signal model. Explain the importance of bandwidth and the trade-offs between gain, bandwidth, and stability in amplifier design. Also, explain the effect of various frequency-dependent components like capacitors and inductors on the frequency response of the amplifier.
6) Comparison with Ideal Amplifiers: Compare the performance of the practical amplifier model with that of an ideal amplifier model, highlighting the advantages and disadvantages of each amplifier and the factors that affect their performance.
7) Conclusion: Summarize the key points covered in the video and emphasize the importance of understanding the practical amplifier model and how it can be used to simplify circuit analysis and design. Encourage viewers to experiment with different amplifier models and analyze their behavior using the concepts covered in the video.
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