Transformers are electrical devices consisting of two or more coils of wire used to transfer electrical energy by means of a changing magnetic field.A varying current in one coil of the transformer produces a varying magnetic flux, which, in turn, induces a varying electromotive force across a second coil wound around the same core./wikipedia
source/image(PrtSc): Learn Engineering
This video gives a detailed animated illustration on the working of electrical Transformers. Here the basic working principle and construction of transformer, step-up transformer, step-down transformer, transformer winding and core construction are well illustrated.Watch the video from Learn Engineering for more info:
Transformers are used for increasing or decreasing the alternating voltages in electric power applications, and for coupling the stages of signal processing circuits.
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Electrical energy can be transferred between the two coils, without a metallic connection between the two circuits.Faraday’s law of induction discovered in 1831 described the induced voltage effect in any coil due to changing magnetic flux encircled by the coil.
