Engineers at the Ganz factory, namely Károly Zipernowsky, Miksa Déri and Ottó Bláthy invented the modern electric transformer which could be produced on an industrial scale, and which also did not need any manual voltage regulation. A depolarized device was created, where the electric flux was closed into a vacuumed iron core, in a way that its magnetic scattering was negligible.

Two types of transformers existed: the core transformer and the shell transformer. Shortly after having the opened iron core transformer patented, along came its closed partner. In its patent description, for the first time in history, we can find it referred to as “transformer”.

In 1885 the Ganz factory showcased their new transformer and power distributer at the Hungarian National General Fair. With their deep theoretical and applied knowledge, not only did Zipernowsky and his partners invent this new distributer, but they also created and installed its required equipment.

After observing this distributing system, university professor Galileo Ferraris raised the Hungarian electrical industry into the world’s elite. He played a major part in letting Ganz establish his first alternating current system in Italy.