Failure detection for series of electrical loads

Details Failure detection for series of electrical loads Failure detection for series of electrical loads

2009-04-20

2011-10-25

Tang, Minh N (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C324S528000

Reexamination Certificate

active

08044667

ABSTRACT:
An apparatus for detecting failures in an illumination device includes at least two light emitting diodes connected in series. The apparatus includes a first, a second, and a third circuit node for interfacing the illumination device such that the voltage drop across at least two light emitting diodes is applied between the first and the second circuit node and a fraction of the voltage drop is applied between the second and the third circuit node. An evaluation unit is coupled to the first, the second, and the third circuit node and configured to assess whether the electric potential present at the third circuit node is within a pre-defined range of tolerance about a nominal value that is defined as a pre-defined fraction of the potential difference present between the first and the second circuit node.

REFERENCES:
patent: 4394647 (1983-07-01), Van Dine
patent: 5444390 (1995-08-01), Bartlett et al.
patent: 6888454 (2005-05-01), Kurose
patent: 2007/0159750 (2007-07-01), Peker et al.

Affiliated with

Also associated with

Rating

Failure detection for series of electrical loads does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Failure detection for series of electrical loads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Failure detection for series of electrical loads will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4297927