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Sunday, 5 January 2014


Simple Audio amplifier contains three common NPN Transistors.
Contains 10K linear potentiometer.
BC547 is used for pre-amplification of low signals.
2* 2N3904 are used as a cascade amplifier.
Good for 8 Ohm (0.5W) small speakers.
It was made to fit in a drink glass. It was sold in 2004.

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