CHAPTER 8
Audio Signals and Circuits
Chapters 5 through 7 covered diodes, light-emitting diodes (LEDs), amplifying devices, and operational amplifiers. In particular, we saw on a top level how to use negative feedback with op amps. We will build on some of the circuits and integrate them into more complex circuits. For example, we will show another situation where a constant current source is used for setting the emitter current of a differential transistor amplifier.
A main objective of this chapter is to discuss different types of preamplifiers for microphones and phonograph (phono) cartridges. Note that this chapter will not cover audio power ...
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