SYNCHRONOUS RECTIFIER 259
of collector rings and supply phases by phase splitting in the
synchronous-motor armature, leads to the synchronous con-
verter as the final development of the high-power polyphase
rectifier.
For " synchronous converter" see " Theoretical Elements of
Electrical Engineering/' Part II, C. For some special types of
synchronous converter see under "Regulating Pole Converter"
in the following Chapter XXI.