Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JPH07163187
Kind Code:
A
Abstract:
PURPOSE: To provide a motor controller in which the controlled load current is increased by reducing power consumption in the power supply circuit of the controller while supplying the load current stably.
CONSTITUTION: The power supply circuit 5 for a motor 1 is connected with a commercial power supply through a power factor improving capacitor 2 and the load current is increased by reducing power consumption of a step-down circuit. A microcomputor 8 varies the input impedance of the power supply circuit 5 depending on the operating state of the motor 1 thus supplying a controlled load current stably from the power supply circuit 5.
Inventors:
TAYA HITOSHI
Application Number:
JP30401093A
Publication Date:
June 23, 1995
Filing Date:
December 03, 1993
Export Citation:
Assignee:
MATSUSHITA SEIKO KK
International Classes:
H02P25/04; H02P21/04; H02P21/36; H02P23/03; H02P23/07; H02P27/02; (IPC1-7): H02P7/622
Attorney, Agent or Firm:
Akira Kobiji (2 outside)