Autotransformer

Autotransformer

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. An autotransformer is an electrical transformer with only one winding. The auto prefix refers to the single coil acting on itself rather than any automatic mechanism. In an autotransformer portions of the same winding act as both the primary and secondary. The winding has at least three taps where electrical connections are made. An autotransformer can be smaller, lighter and cheaper than a standard dual-winding transformer however the autotransformer does not provide electrical isolation. Autotransformers are often used to step up or down between voltages in the 110-117-120 volt range and voltages in the 220-230-240 volt range, e.g., to output either 110 or 120V from 230V input, allowing equipment from a 100 or 120V region to be used in a 230V region. An autotransformer has a single winding with two end terminals, and one or more terminals at intermediate tap points. The primary voltage is applied across two of the terminals, and the secondary voltage taken from two terminals, almost always having one terminal in common with the primary voltage. The primary and secondary circuits therefore have a number of windings turns in common.show more

Product details

  • Paperback | 112 pages
  • 152 x 229 x 7mm | 177g
  • Aud Publishing
  • United States
  • English
  • 6135933906
  • 9786135933901