Circuit arrangement of an electromotor comprising two terminals

Details Circuit arrangement of an electromotor comprising two terminals Circuit arrangement of an electromotor comprising two terminals

2005-01-04

2005-01-04

Ip, Paul (Department: 2837)

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

C318S280000, C318S286000, C318S445000, C049S026000, C049S028000

Reexamination Certificate

active

06838845

ABSTRACT:
An electromotor can be selectively actuated for operation in both rotational directions. In the condition of the electromotor not energized with current, respectively one rotational direction of the electromotor is blocked and one rotational direction remains movable in a free-running manner. The circuit includes first and second diodes forward-connected from ground to first and second motor terminals, a respective change-over switch connecting each motor terminal selectively to power or ground, and a free-run blocking switch interposed preferably between one of the motor terminals and its associated change-over switch.

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