Auto transformer

An autotransformer is a special variation of a transformer, in which primary and secondary windings have been combined, resigning from galvanic circuits separation. In the transformer, the power is transmitted from the primary to the secondary circuit via the magnetic field. The energy flow through the autotransformer is accompanied by transformation and conduction phenomena. The conduction results from the direct combination of the autotransformer’s primary and secondary circuit In order to describe the autotransformer operation properly, its transitive apparent power is presented in the following
ß Autotransformer electromagnetic power SWA transmitted to the secondary circuit by means of transformation only

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