Small Transistor Metronome

Metronome circuit is a much cheaper option compared to old mechanical metronome. With only few electronic components, we can build a low cost metronome. Here is the schematic diagram of the circuit: You can build it with veroboard, matrix board, or even with no board at all: just solder each component leads and cables directly. If you build without board, […]

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Single Chip Two-Tones Siren

Kids like the police or fire-brigade cars siren sound. This circuit can generate dual tone like Police or Fire-brigade cars siren sound. This circuit usually installed on battery powered cars, bicycles, and motorcycles. Not only that, but also can be installed in models and other games. Here is the schematic diagram of the circuit: Basically, this circuit utilize the IC1A […]

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