With Inductive Control Means In The Line Circuit Patents (Class 363/90)
Saturable reactor (e.g., magnetic amplifier) (Class 363/91)
  • Chopper control device
    Patent number: 4032833
    Abstract: In a chopper control device in which a magnetic phase shifter is used for providing chopper turn-on and turn-off signals, an external magnetic field is applied to the core of the magnetic phase shifter so as to carry out the notching control of a motor by regulating the residual phase angle of the output of the magnetic phase shifter.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: June 28, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Ibamoto, Hisakatsu Kiwaki