Driver circuit that employs feedback to enable operation of...

Details Driver circuit that employs feedback to enable operation of... Driver circuit that employs feedback to enable operation of...

2004-08-10

2008-09-16

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

Reexamination Certificate

active

07425862

ABSTRACT:
Driver circuit that generates an output drive signal that can be used to drive a light source (e.g., a light emitting diode (LED)) is described. The driver circuit includes an output transistor that operates in either a saturation region or a triode region. The driver circuit employs feedback to generate an output drive signal (e.g., an output drive current) that is independent on the operating mode of the output transistor.

REFERENCES:
patent: 6686771 (2004-02-01), Erhart
patent: 6690229 (2004-02-01), Rudolph
patent: 6753724 (2004-06-01), Hanson
patent: 6894556 (2005-05-01), Kawasumi
patent: 7109785 (2006-09-01), Derksen
patent: 2004/0017249 (2004-01-01), Engl

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