Audio Power Amplifier Design, 6th Edition

Chapter

9

The Output Stage

Classes and Devices

The Distortions of the Output

Harmonic Generation by Crossover Distortion

Comparing Output Stages

The Emitter-follower Output

Multiple Output Devices: EF Output

The CFP Output

Multiple Output Devices: CFP Output

Output Stages with Gain

Quasi-complementary Outputs

Triple-based Output Configurations

Triple EF Output Stages

Quadruple Output Stages

Series Output Stages

Selecting an Output Stage

Output Stage Conclusions

References

Classes and Devices

The almost universal choice in semiconductor power amplifiers is for a unity-gain output stage, and specifically a voltage-follower. Output stages with gain are not unknown – see Mann¹ for a design with ten times gain in the output section – but ...