Actuating circuit for D.C. motor

Details Actuating circuit for D.C. motor Actuating circuit for D.C. motor

1977-06-21

1979-07-31

Rubinson, Gene Z.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318332, H02P 500

Patent

active

041631820

ABSTRACT:
A D.C. motor control circuit including a wheatstone bridge type speed regulating circuit with a transistor arranged for detection of the counter-EMF developed across the motor armature to control operation of a drive control circuit. In one embodiment of the invention, an actuating circuit comprises a constant voltage source formed from a constant current circuit connected parallel to an electrical power supply source for the motor and a variable resistor connected in series to the constant current voltage source. A diode applies the output of the variable resistor to the base of the transistor to thereby effect conduction of this transistor.

REFERENCES:
patent: 3512068 (1970-05-01), Mori
patent: 3517291 (1970-06-01), Carruth
patent: 3560828 (1971-02-01), Kobayashi et al.
patent: 3710219 (1973-01-01), Takahashi et al.
patent: 3777244 (1972-07-01), Kosaka
John Markus, Sourcebook of Electronic Circuits, 6-10-69, p. 167, "Constant Current Regulator".

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