Any NPN transistor will do the power amplifier circuit with any power source you have. In this video I will guide you to make a simple but high power amplifier circuit. You have a transistor you need to check the datasheet on google to see if the pinout and NPN model are ok. You need a rheostat or two, a 100µF capacitor. How? You should follow step by step in the video. and then enjoy your fruits. with the PNP transistor you also do the same but you should review the video you made with the PNP transistor B688, and replace the resistor with a rheostat.
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