Question
Download Solution PDFThe maximum theoretical efficiency of a Class A amplifier can be
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- For class A the angle of the excursion is 360° and the current flows through the active device for the whole of the input cycle.
- For class B the angle of the excursion is 180° and the current flows through the active device for half of the input cycle.
- For class AB the angle of the excursion is >180° and < 360° and current flows through the active device for more than half of the input cycle.
- For class C the angle of the excursion is less than 180° and the current flows through the active device for less than half of the input cycle.
The companion of different Amplifier is as shown:
|
|
Class A |
Class B |
Class C |
|
Conduction angle |
360° |
180° |
<180° |
|
Efficiency |
50% |
78.5% |
100° |
|
Linearity |
Highest among all |
Lower than class -A |
Poor Linearity |
|
Distortion |
Low |
Small to moderate |
Highest |
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