15 Watt Amplifier

Posted on Jan 11, 2013

You can use this circuit with any walkman or CD player since it is designed to take a standard 500mv RMS signal. A 15 watt amplifier made using discrete components. Sergio designed this circuit for his Electronics Level II course. This amplifier uses a dual 20 Volt power supply and delivers 15 watts RMS into an 8 ohm load.

15 Watt Amplifier
Click here to download the full size of the above Circuit.

Q1 operates in common emitter, the input signal being passed to the bias chain consisting of Q8, Q9, D6, D13 and D14. Q8 and Q9 provide a constant current through the bias chain to minimize distortion, the output stage formed by a discrete darlington pair

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