Reading time: 2 minute This vintage DIY electronic kit features a microphone preamplifier. The assembly ensures a uniform amplification in the 30Hz - 30kHz band of a signal received from a microphone. The scheme includes 2 BC 172B transistors, resistors and capacitors.
2,025 total views
Reading time: 2 minute The montage is addressed to those who are willing to learn or practice the Morse code. The vintage DIY electronic kit is an audio frequency generator consisting of two transistors, a resistor and a capacitor.
2,320 total views
Reading time: 2 minute The DIY electronic kit presented in this article, electronically generates an electrical signal which, transformed into sound by a speaker, resembles that generated by classic sirens. The diagram includes two stable circuits, a training circuit and a power amplifier.
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Reading time: 3 minute This DIY electronic kit synthesizes an electrical signal which, transformed into an acoustic signal by means of a loudspeaker, will have characteristics similar to dog barking, imitating it. The diagram includes three stable cells and a power amplifier.
2,725 total views
