POWER AMPLIFIERS AND FEEDBACK ANALYSIS
45 sections
·
We're sorry, but this course is currently unavailable. It may have expired, be pending
approval,
or still be processing your enrollment. Please check back later or contact your
instructor
or
support for assistance.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- The classification of power amplifiers is based on their conduction angles and efficiency characteristics.
- Negative feedback significantly improves amplifier performance by enhancing stability, reducing distortion, and increasing bandwidth.
- Class AB amplifiers are commonly preferred for audio applications due to their balance between efficiency and low distortion.
Key Concepts
- -- Power Amplifier Classifications
- Classes A, B, and AB amplifiers are defined based on their operating principles, efficiency, and conduction angles.
- -- Negative Feedback
- A technique used to improve amplifier performance by feeding a portion of the output back to the input, out of phase with the original signal.
- -- Crossover Distortion
- A type of distortion in Class B amplifiers occurring when the output transistors switch off and on as the input signal crosses zero.
- -- Efficiency Calculation
- The ratio of output power to input power, often expressed as a percentage, indicating how well an amplifier converts input power into output power.
Additional Learning Materials
Supplementary resources to enhance your learning experience.