Art
Active Member
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Nothink is complicated, in electronic there is just amplifier and oscilator. You can make an oscilator with 2 transistors, one resistance and one capacitor ( i call it minimal oscilator): +----capa/resistance> base of the transistor. The second transistor help to start the first transistor. The base of the second is not connected, the colletor is relied to the base. You can change frequency with the rc circuit, for exemple: 600k and 30 nanofarad produce audio wave. The only frequency limit is the frequency supported by transistor.