A very simple two transistor amp circuit which can be use in any place where a little amplification of audio is required. This simple transistor amp is built around two BC108 transistors and few components. You can use any other substitute NPN transistors in the place of 

BC108. The ouput of this circuit can be heard in a low impedance headphones. Further transistor amplification stages are required to drive a speaker. The input power is 5 volt DC.



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