Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-01-30
2007-01-30
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
Reexamination Certificate
active
10809941
ABSTRACT:
The invention relates to a control device for operating a load circuit provided with an inductive load, comprising a control stage producing a pulse-width modulated control signal with measuring disconnection intervals provided in between said control signal, a power stage feeding the load circuit and comprising an electronic switch controlled by the pulse-width modulated control signal and a freewheeling element which is connected in parallel to said load circuit. In order to improve upon said device so that it is possible to determine in a simple manner the amount of current flowing into the load circuit, a current detection unit for determining the amount of current flowing into the load circuit prior to the measuring disconnection interval detects the duration of freewheeling time and calculates the value of said current therefrom.
REFERENCES:
patent: 5420532 (1995-05-01), Teggatz et al.
patent: 5977743 (1999-11-01), Flock
patent: 6181171 (2001-01-01), Graf et al.
patent: 6222356 (2001-04-01), Taghizadeh-Kaschani
patent: 6621309 (2003-09-01), Roder et al.
patent: 7049832 (2006-05-01), Novak et al.
patent: 7095639 (2006-08-01), Cho et al.
patent: 197 43 346 (1999-04-01), None
patent: 198 14 681 (1999-10-01), None
patent: 199 41 488 (2001-03-01), None
patent: 0 855 799 (1998-01-01), None
Alcoa Fujikura Gesellschaft mit beschraenkter Haftung
Berhane Adolf
Lipsitz & McAllister LLC
LandOfFree
Control 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 Control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3753297