The circuit was made in a modular design to provide a sequential illumination of LEDs or lamps as it forms a ring structure which make the circuit limitless to the number of modules desired. BC337 – a ...

[Dr. Cockroach] has delighted us again with another of his circuits on cardboard. He calls it steampunk inspired, and while we guess we can see what he’s getting at, it’s more like a sweet example of ...

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Dedicated model rail enthusiasts using sophisticated train and points controllers often have the problem that as their layouts get bigger and more complex, the transformer supplying power to the ...