Control circuit for a D.C. motor

Details Control circuit for a D.C. motor Control circuit for a D.C. motor

1978-10-31

1981-05-12

Smith, Jr., David

Electricity: motive power systems

Braking

Dynamic braking

318258, 318379, 318139, H02P 314

Patent

active

042674921

ABSTRACT:
A direct current motor control circuit in which the armature is arranged for reversible connection in a main path for current to flow from a first supply terminal to a second supply terminal through the armature and a current chopper. A pair of switches between which the armature is connected are controllable to effect this reversible connection in the drive mode and to connect the armature across a bridge to permit return current to flow from the second terminal, in either direction through the armature toward the chopper in a regenerative mode, one or more diodes being provided for completing a return path for the return current to flow to the first terminal.

REFERENCES:
patent: 3504257 (1970-03-01), Smith
patent: 3566227 (1971-02-01), Edhlund
patent: 3924168 (1975-12-01), Woodward
patent: 3944898 (1976-03-01), Wright
patent: 4074175 (1978-02-01), Born et al.
patent: 4084119 (1978-04-01), Kato et al.
patent: 4145640 (1979-03-01), Kipp et al.

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