Title:
【発明の名称】モータ速度制御回路
Document Type and Number:
Japanese Patent JPS6052673
Kind Code:
B2
Abstract:
A motor speed control circuit includes a resistor, a voltage reference circuit, a first voltage comparator, a current mirror circuit for deriving first and second output currents according to the output of the first voltage comparator, and a motor. A voltage consisting of the sum of a reference voltage and a voltage generated across the resistor by the first output current of the current mirror circuit is applied to the first input terminal of the first voltage comparator. The second output current of the current mirror circuit is fed to the motor and to the second input terminal of the first voltage comparator. A second comparator detects the voltage difference between the first and second input terminals of the first voltage comparator. The output of the second comparator is applied to the current mirror circuit to enhance the starting torque of the motor.
Inventors:
FUKAYA KOICHI
KISHI ATSUSHI
KISHI ATSUSHI
Application Number:
JP13889677A
Publication Date:
November 20, 1985
Filing Date:
November 21, 1977
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
H02P1/16; H02P1/18; H02P7/288; H02P29/00; (IPC1-7): H02P1/18; H02P7/288
Attorney, Agent or Firm:
Uchihara Shin
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