Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1995-04-04
1996-10-22
Fleming, Fritz
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361170, 307116, H01H 4704
Patent
active
055683495
ABSTRACT:
A relay device (103) having a coil (144) and a set of contacts (146, 147) employs an apparatus (100) and method (200) for drawing current through the coil (144) to close, and maintain closure of, the set of contacts (146, 147). A first terminal of the coil (144) is coupled to a power supply (101) and a second terminal of the coil is coupled to a holding circuit (108, 115, 126) that establishes a first current through the coil (144). The second terminal of the coil (144) is also coupled to a closing circuit (112) that establishes a second current through the coil (144), wherein the first current and the second current together are at least sufficient to close the set of contacts (146, 147) and the first current is sufficient to maintain closure of the closed set of contacts (146, 147). A control circuit (118, 128) is coupled to the closing circuit (112) and the holding circuit (108, 115, 126) to remove the second current after the set contacts (146, 147) are closed.
REFERENCES:
patent: 3852646 (1974-12-01), Mason
patent: 4336564 (1982-06-01), Wisniewski et al.
patent: 4345564 (1982-08-01), Kawamura et al.
patent: 4434450 (1984-02-01), Gareis
patent: 4516185 (1985-05-01), Culligan et al.
patent: 5018366 (1991-05-01), Tanaka et al.
patent: 5085574 (1992-02-01), Wilson
patent: 5146386 (1992-09-01), Learned
patent: 5210756 (1993-05-01), Kummer et al.
Crilly Daniel C.
Fleming Fritz
Motorola Inc.
Sonnentag Richard A.
LandOfFree
Apparatus and method for controlling a relay device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for controlling a relay device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for controlling a relay device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2364044