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Birthday of the first transformer
Birthday of the first transformer
D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
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In order to create transformers it was necessary to study the properties of materials: non-metallic, metallic and magnetic.
Alexander Stoletov took the first steps in this direction. He discovered the hysteresis loop and the domain structure of ferromagnet (1880s).
Hopkinson brothers developed the theory of electromagnetic circuits.
In 1831, the English physicist Michael Faraday discovered the phenomenon of electromagnetic induction, which underlies the operation of an electrical transformer, during his fundamental research in the field of electricity.
A schematic representation of the future transformer first appeared in 1831 in the works of Faraday and Henry. However none of them noted in their device any change in voltages and currents, in other words alternating current transformation.
In 1848 Heinrich Daniel Ruhmkorff invented an induction coil of a special design. It was the transformer prototype.
On November 30, in 1876, Pavel Yablochkov received the world’s first patent for his electric candle – considered a first-ever application of the transformer. Yablochkov invented a lighting system based on a set of induction coils where the primary windings were connected to a source of alternating current. The secondary windings could be connected to several ‘electric candles’ (arc lamps) of his own design.
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