Control means and method of controlling a current through a...

Details Control means and method of controlling a current through a... Control means and method of controlling a current through a...

2007-02-27

2007-02-27

Barnes, Crystal J. (Department: 2121)

Inductor devices

Coils with temperature compensating means

C700S021000, C700S079000, C700S293000, C700S299000, C324S104000, C324S106000, C361S093800, C361S103000, C361S140000, C374S183000

Reexamination Certificate

active

10519050

ABSTRACT:
An electronic circuit comprising means (CMNS) for controlling a current (IL) through a coil (L) for the generation of a magnetic field (H). The means (CMNS) comprise means (DMNS) for the determination of a parameter which is a measure for the value of the resistance (RL) of the coil (L). During operation the maximum absolute value of the current (IL) is decreased when the parameter exceeds a certain limit.

REFERENCES:
patent: 6111379 (2000-08-01), Feldtkeller
patent: 6128174 (2000-10-01), Ritter et al.
patent: 6229663 (2001-05-01), Yoneda et al.
patent: 6380861 (2002-04-01), Estelle et al.
patent: 10057375 (2000-11-01), None
patent: 02273354 (1991-01-01), None

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