This circuit use the IC AN7166 . On circuit have an advantage is very loud sound , although only 30W this circuit is like a 100 W transistor power amplifier. Its so good circuit with IC AN7166 . This circuit require minimum voltage 12 V and Maximum voltage 24 volt , I recomended voltage for this circuit is 18 volt. And use the battery supply current 5 Ampere. Maximum power output of one speaker 30 W with impedance 4 Ohm.
See this circuit schematic below :
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgeqrsQM3i5mnj4xUgUIxnFsYM2RpxRhpsMWYe-zv9SlTW-dP27xr8sDyRw6Sq0uCFWe8rljwogskqi3p40TloKEJo0EfGcQMmuSCvoueNXsRoU1M36FO6LcpZazQzV4oiirQ0rsF4IcW_n/s320-rw/Circuit+power+amplifier+with+IC+AN7166.jpg) |
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Capacitor thats connect legs IC 4 and 3 is 1 nF . And capacitor thats connect legs IC 9 and 3 is 1 nF. For the input capacitor at 1 uF ( L and R ) for output capacitor at 1000uF with voltage 50 V or higher.
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