Analog Electronic Circuits - Vol 1 | 25. Common Emitter Amplifier (Part B) by Abraham | Learn Smarter
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Knowledge
25. Common Emitter Amplifier (Part B)

The chapter provides an in-depth analysis of the Common Emitter (CE) amplifier, focusing on its small signal equivalent circuit and voltage gain characteristics. It highlights the importance of biasing for sensitivity to transistor beta and discusses associated problems like thermal runaway. The derivations for voltage gains and the implications of various configurations are explored thoroughly.

Sections

  • 25.1

    Analog Electronic Circuits

    This section focuses on the Common Emitter (CE) amplifier and its small signal equivalent circuit analysis.

    Learning Practice

  • 25.1.1

    Common Emitter Amplifier (Part B)

    This section focuses on the small signal equivalent circuit of the common emitter amplifier and its vital parameters, addressing voltage gain and the impact of biasing and temperature on circuit performance.

    Learning Practice

  • 25.2

    Small Signal Equivalent Circuit

    This section covers the small signal equivalent circuit of the common emitter amplifier, explaining how large signal analysis leads to simplifications in AC analysis.

    Learning Practice

  • 25.2.1

    Voltage Gain Expression

    The section discusses the voltage gain expression for a common emitter amplifier in small signal analysis, highlighting its significance and derivation.

    Learning Practice

  • 25.2.2

    Mapping Small Signal Model To Voltage Amplifier

    This section discusses the transformation of the large signal analysis of a Common Emitter (CE) amplifier into a small signal equivalent circuit, focusing on its mapping to a voltage amplifier.

    Learning Practice

  • 25.2.3

    Higher Frequency Effects On Bjt

    This section discusses the impact of higher frequency on the operation of Bipolar Junction Transistors (BJTs), focusing on small signal models and the associated parasitic capacitances.

    Learning Practice

  • 25.2.4

    Considering Early Voltage Effect

    This section discusses the Early Voltage Effect in common emitter amplifiers and its impact on circuit performance and biasing.

    Learning Practice

  • 25.3

    Sensitivity Of Operating Point

    This section discusses the sensitivity of the operating point of a Common Emitter (CE) amplifier to variations in transistor beta (β) and its implications for circuit performance.

    Learning Practice

  • 25.3.1

    Fixed Bias Sensitivity To Beta

    This section discusses the sensitivity of the operating point of the Common Emitter (CE) amplifier to the beta parameter of the transistor, particularly in fixed bias configurations.

    Learning Practice

  • 25.3.2

    Thermal Runaway Problem

    This section discusses the thermal runaway problem in common emitter amplifiers, particularly those using fixed biasing.

    Learning Practice

  • 25.3.3

    Solutions To Instability Problems

    This section discusses the solutions to instability issues in common emitter amplifiers, specifically focusing on the impact of transistor beta variations on the operating point.

    Learning Practice

  • 25.4

    Summary Of The Session

    This section covers the small signal equivalent circuit of a common emitter amplifier, focusing on its analysis and the impact of transistor beta on operating points.

    Learning Practice

References

Lecture 25.pdf

Class Notes

Memorization

What we have learnt

  • The CE amplifier's operatin...
  • The sensitivity of the CE a...
  • High-frequency behavior of ...

Final Test

Revision Tests