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Audio circuits design projects and schematics, various audio amplifiers circuits with diagram and schematic.
Using LM386 voice audio power amplifier circuit designed for use in low voltage consumer applications can be designed a very simple voice amplifier with variable gain and volume control.
Using TDA2003 audio amplifier integrated circuit can be designed a very simple 10 watts power audio amplifier on a 2 ohms load or 4 watts on a 4 ohms load .
using the LM3915 monolithic integrated circuit can be designed a very simple audio power level meter that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display.
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