difference between transformer and auto transforme
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The autotransformer has only one winding. Thus, less conductor is required for winding as compared to the conventional transformer. The primary and secondary windings of the autotransformer are not electrically insulated whereas the windings of the conventional transformer are electrically insulated from each other.
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Normal transformer consists of three pairs of winding used to transform a set of three-phase voltages from one voltage level to another while auto-transformer consists of a single electric winding, which can be used as a step-down or step-up device.
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