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Mini Audio Booster
This simple circuit (can be seen on figure.1) can be used as audio booster from FM tuner, or can be used as pre amplifier. The output can be connected to headset. the supply voltage can be varied from 3 - 9 volt experimentally, by adjusting the resistor value. This circuit just need one transistor and some other component.
Figure 1. Mini Audio Booster using 1 transistor.
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