43. Limitation of CE and CS Amplifiers in Cascading - Part A
The chapter discusses the limitations of Common Emitter (CE) and Common Source (CS) amplifiers when cascading them. It explores how cascading can affect gain and frequency response, leading to a need for buffers to mitigate these effects. Key concepts include the computation of overall gain and upper cutoff frequency changes due to loading effects between cascaded stages.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Cascading CE and CS amplifiers can introduce attenuation in gain and changes in frequency response.
- Buffers can help maintain desired characteristics by isolating stages and minimizing loading effects.
- It is essential to consider both resistance and capacitance effects when analyzing cascaded amplifier configurations.
Key Concepts
- -- Common Emitter Amplifier
- A type of amplifier configuration known for its high gain, commonly used in analog electronics.
- -- Common Source Amplifier
- A counterpart to the CE amplifier, used in MOSFET technologies, characterized by its ability to provide significant gain.
- -- Cascading
- The process of connecting multiple amplifier stages in series to achieve higher overall gain.
- -- Buffer
- An intermediary circuit that helps prevent loading effects when cascading amplifiers.
- -- Loading Effect
- The change in circuit behavior due to the current drawn by one stage affecting the operating point of another stage.
- -- Upper Cutoff Frequency
- The frequency at which the gain of an amplifier begins to severely attenuate, which can be affected by cascading effects.
Additional Learning Materials
Supplementary resources to enhance your learning experience.