Schematic Diagrams

Useful schematic and wiring diagrams. ✔ ✔ Enjoy electronic circuits, let your idea comes to hardware


Doorbell Cascade

Sometimes you have to do it the hard way, even if doing it the easy way is an option. That is the case here. The intention is to add a second doorbell in parallel with the existing bell. This does not, in principle, require any electronic components. You would simply connect the second bell to […]

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Three-Phase Transformers Circuits Diagram

In the 1880′s the development of transformers contributed essentially to the enforcement of alternating and three-phase current technology. Transformers enable the transmission of electrical energy using the voltage adapted to power and distance. A three-phase transformer is made of three sets of primary and secondary windings, each set wound around one leg of an iron […]

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Spark Firing Circuitry Using a Transformer

The figure below presents an example how a transformer is used to generate the 40kV that fires your car spark plugs. The transformer which is “coil” in the above circuit diagram, used to generate the spark voltage with a very high secondary-to-primary turns ratio.