Title:
CONTROL CIRCUIT FOR ELECTRIC MOTOR WHICH IS FREE FROM COLLECTOR
Document Type and Number:
Japanese Patent JPH03183393
Kind Code:
A
Abstract:
PURPOSE: To obtain a rectification signal regardless of the shape of a current to be supplied to a motor by connecting the basic coils of a winding together in series and providing a comparator means for generating a detection signal in each supply state. CONSTITUTION: A control circuit includes a rotor and a stator where a bi-phase or a multiple-phase coil winding including several basic coils of the same impedance is provided. For example, there are provided with three basic coils A1 -C1 that are connected in triangular shape between terminals 31-33 in the case of a three-phase motor. Also, the control circuit includes the comparators 21-23, each first input is connected to the terminals 31-33 of the coil windings A1 -C1 , and the second input is connected to the common middle point of a voltage divider that is expressed by two resistors 24 and 25 being connected in series between the + and - terminals of a current supply source, thus connecting the basic coils A1 -C1 in series and supplying power in each supply state of all motors.
Inventors:
RUCHIAANO ANTONIINI
Application Number:
JP30592990A
Publication Date:
August 09, 1991
Filing Date:
November 09, 1990
Export Citation:
Assignee:
PORTESCAP
International Classes:
H02P6/182; (IPC1-7): H02P6/02
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)