autotransformer
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au·to·trans·form·er
(ô′tō-trăns-fôr′mər)n.
An electrical transformer in which the primary and secondary coils have some or all windings in common.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
autotransformer
(ˌɔːtəʊtrænsˈfɔːmə)n
(Electrical Engineering) a transformer in which part of the winding is common to both primary and secondary circuits
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
au•to•trans•form•er
(ˌɔ toʊ trænsˈfɔr mər)n.
a transformer having a single coil that serves as both a primary coil and a secondary coil.
[1890–95]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.