CHAPTER 10
Audio Circuits
We will explore two types of audio amplifiers—preamplifiers, commonly known as preamps, and power amplifiers.
The examples chosen will be from commercially manufactured designs. What’s different in this chapter is that in some cases, we will see associated circuits such as a power supply and a voltage regulator. Although integrated circuit (IC) amplifiers could have been chosen for this chapter, it would be good to know something more about amplifiers on the transistor level. This way you can use this knowledge to augment IC designs with discrete circuits.
NOTE: Audio signals are usually measured in RMS voltages. For ...
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