Which class of amplifier has maximum distortion?
Which class of amplifier has maximum distortion?
Right Answer is:
Class C
SOLUTION
- In class C amplifiers, the transistor conducts for less than one-half cycle of the input signal (i.e. conduction angle is less than 180° around 80° to 120°).
- This reduced conduction angle improves the amplifier efficiency but creates a large amount of distortion.
| Class | Class-A | Class-B | Class-C | Class-AB |
| Operating cycle | 360° | 180° | Less than 180° | More than 180° and less than 360° |
| Position of Q | Centre | On X-axis | Below X-axis | Above X- axis |
| Efficiency | 25% or 50% | 78.5% | Highest (almost 100 %) | 50 % to 78.5 % |
| Distortion | Absent | Present more than class-A | Highest | Present less than class-B |