Device for driving and electromagnet, particularly for...

Details Device for driving and electromagnet, particularly for... Device for driving and electromagnet, particularly for...

2005-07-20

2009-06-02

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

C361S160000

Reexamination Certificate

active

07542261

ABSTRACT:
A device for driving an electromagnet, for operating pumps, including a primary winding and a moving element, power switching electronic means, a control logic unit to control the power switching electronic means and to detect a value of an excitation current. A power supply of the control logic unit provided by a corresponding shunt (PP) of the primary winding, the control logic unit controlling the power switching electronic means depending on the detected value of the excitation current to make the electromagnet operate as an auto-transformer for providing the power supply to the control logic unit and maintaining the function of attracting the moving element substantially unchanged. Further disclosed are the corresponding driven electromagnet and the related method for driving the electromagnet.

REFERENCES:
patent: 5514942 (1996-05-01), Albach
patent: 6457944 (2002-10-01), Haberlander et al.
patent: 6898984 (2005-05-01), Schob
patent: 2006/0045755 (2006-03-01), McDonald et al.
patent: 2006/0073024 (2006-04-01), Ghoshal et al.
patent: 424547 (1935-02-01), None
patent: 2281666 (1995-03-01), None
patent: 1315957 (2000-12-01), None
patent: 95 01084 (1995-01-01), None

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