Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP8707877ApriorityCriticalpatent/JPS5422644A/en
Publication of JPS5422644ApublicationCriticalpatent/JPS5422644A/en
PURPOSE: To improve the performance of speed control, by making the maximum output voltage of field-control recycle larger than the rated voltage of a field system, in a speed controller that controls armature current in one direction and controls field current in the positive and negative directions.
COPYRIGHT: (C)1979,JPO&Japio
JP8707877A1977-07-201977-07-20Speed controller of dc elevator
PendingJPS5422644A
(en)