This is a simple audio Pre-Amplifier with single transistor 2N3904.
This easy circuit provides good gain to weak audio signals such as electret microphone. Use it in front of an RF oscillator to make an RF transmitter that’s very sensitive to sound.
This is a simple audio Pre-Amplifier with single transistor 2N3904.
This easy circuit provides good gain to weak audio signals such as electret microphone. Use it in front of an RF oscillator to make an RF transmitter that’s very sensitive to sound.
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