Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With particular feedback
Reexamination Certificate
2006-04-25
2006-04-25
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With particular feedback
C327S544000, C315S308000
Reexamination Certificate
active
07034607
ABSTRACT:
A switching constant-current power device can stabilize current flowing to a load (e.g. a display device comprising an LED, or the like) even when the current is repeatedly interrupted. A voltage current detector is connected to the output side of a power converter and creates a voltage signal in accordance with the output voltage thereof; and a feedback circuit is provided between a controller for driving the power converter and a current detector, which generates a first feedback signal in accordance with the load current. The feedback circuit comprises a signal holding unit, which outputs a second feedback signal that was created by consulting the voltage signal at a given time, the feedback circuit supplying the first feedback signal, output by the current detector, to the controller when load current is flowing, and supplying the second feedback signal, output by the signal holding unit, to the controller when load current is not flowing.
REFERENCES:
patent: 4987348 (1991-01-01), Wong
patent: 6198198 (2001-03-01), Fujimura et al.
patent: 6509700 (2003-01-01), Nakatsuka et al.
patent: 6909249 (2005-06-01), Otake
patent: 2004/0183380 (2004-09-01), Otake
patent: 2005/0002134 (2005-01-01), Ohtake et al.
patent: 11-068161 (1999-03-01), None
patent: 2001-215913 (2001-08-01), None
patent: 2002-203988 (2002-07-01), None
Callahan Timothy P.
Englund Terry L.
Renner Kenner Greive Bobak Taylor & Weber
Toko Kabushiki Kaisha
LandOfFree
Switching constant-current power 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 Switching constant-current power device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching constant-current power device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3570809