Relay controller for controlling an excitation current of a...

Details Relay controller for controlling an excitation current of a... Relay controller for controlling an excitation current of a...

2009-05-14

2011-10-18

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

C361S139000

Reexamination Certificate

active

08040654

ABSTRACT:
The invention relates to a relay controller (500) for controlling an excitation current of a relay (300), wherein the relay controller (500) is designed, upon the energization of the relay (300) by means of a switch (210, 211, 221), to control the excitation current through the excitation winding (310) of the relay (300) in such a way that through the excitation winding (310) there flows firstly a pull-in current and, after a pull-in time has elapsed, through the excitation winding there flows a holding current that is lower than the pull-in current, and wherein the relay controller (500) is designed, upon the switching-off of the relay by means of the switch (210, 211, 221), to feed a commutation current that flows through the excitation winding (310) to the commutation device (400) through the first terminal (501) and through the second terminal (502) of the relay controller (500).

REFERENCES:
patent: 6061224 (2000-05-01), Allen
patent: 2003/0209994 (2003-11-01), Kerenyi, Jr.
patent: 2004/0201945 (2004-10-01), Dovheim
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patent: 102004010914 (2005-09-01), None
patent: 69731438 (2005-11-01), None
patent: 1291256 (2006-09-01), None

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