Microprocessor-controlled multifunctioning light with...

Details Microprocessor-controlled multifunctioning light with... Microprocessor-controlled multifunctioning light with...

2007-12-31

2010-06-15

Tran, Thuy Vinh (Department: 2821)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C323S276000, C716S030000

Reexamination Certificate

active

07738229

ABSTRACT:
A method is provided for reducing the power rating of a current limiting resistor (R) in a branch circuit having at least one protected element and the current limiting resistor connected between first and second nodes. The method includes the steps of: determining a maximum fault current in the branch circuit; determining a total current limiting resistance to limit the current in the branch circuit having the short-circuited elements to the maximum fault current; inserting a fuse having an intrinsic resistance in the branch circuit; and dividing the determined total current limiting resistance between the resistor (R) and the intrinsic resistance of the fuse.

REFERENCES:
patent: 5914662 (1999-06-01), Burleigh
patent: 6288553 (2001-09-01), Hofstetter et al.
patent: 6992467 (2006-01-01), Fey
patent: 7216051 (2007-05-01), Bosco et al.
patent: 7557548 (2009-07-01), Fey

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