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An electrical transformer in which the primary and secondary coils have some or all windings in common.


(Electrical Engineering) a transformer in which part of the winding is common to both primary and secondary circuits


(ˌɔ toʊ trænsˈfɔr mər)

a transformer having a single coil that serves as both a primary coil and a secondary coil.
References in periodicals archive ?
A 200-megawatt autotransformer was installed, substations with voltage of 330kV, 220kV and 110kV were reconstructed.
The saw has an 1800 mm circular blade, which was driven by a 185 kW 6-pole motor started by an autotransformer, providing a soft start facility.
This paper presents the design and analysis of a double zigzag-connected autotransformer based 24-phase ac-dc converter which supplies direct torque controlled induction motor drives (DTCIMD's) in order to have better power quality conditions at the point of common coupling.
A company not far away made autotransformer controls and would lend a six-dimmer pack in the hope of a future sale.
A polygon autotransformer based 30-pulse ac-dc converter is introduced in [24] which has 5 inter-phase transformers in the dc link.
New chapters cover autotransformer design, common-mode inductor design, series saturable reactor design, self-saturating magnetic amplifier, and designing inductors for a given resistance.
ABB also supplied, delivered, installed and commissioned Green Point's main substation, and is responsible for the provision and commissioning of six substations in total: the main propulsion substation (MPS) and five autotransformer paralleling substations (APS).
The contract covered the building of a power supply system for a new high-speed railway link between London and the English Channel Tunnel, including three feeder substations and four autotransformer stations, ABB said.
We still are teaching autotransformer ratio, spinning top, valve tubes, developer and fixer that are totally useless in today's modern profession.
The P3 module affords greater EMI noise suppression with its added autotransformer to support termination of the unused twisted pair.