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… Read more »
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… Read more »
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.