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Consumer Electronics by S. P. Bali

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20 W + 20 W INTEGRATED STEREO AMPLIFIER

This stereo is built around integrated circuits only and does not employ any discrete transistors. A 741 op-amp is used in the preamplifier and active tone control. The power amplifier is built around IC-TDA2020. The use of ICs, especially in the power amplifier stage, simplifies construction.

 

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Fig. 20.16 Small high-power amplifier incorporating IC-TDA2030.1

 

The TDA 2020 integrated circuit features internal protection. No damage occurs if the output circuit is shorted. Since it also incorporates thermal protection, there is no danger of thermal runaway if excess power is dissipated in relation to ...

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