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Consumer Electronics by S. P. Bali

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CHAPTER 20

INTEGRATED AMPLIFIERS

Integrated circuits in the audio offer a number of special advantages. Not only where small size is the main consideration but also on grounds of cost, the use of integrated circuits is a particularly attractive alternative to discrete components.

The main advantage of employing integrated circuits lies in the use of less discrete components which require individual storage, handling and mounting.

The reduced dimensions of an integrated circuit make it of special appeal for microphone applications. With capacitor microphones, for example, the preamplifier may be mounted in the body of the microphone close to the sensitive element. Another clear example is that of the hearing aid amplifier which, by employing ...

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