Low voltage testing and illuminating device

Details Low voltage testing and illuminating device Low voltage testing and illuminating device

2005-09-06

2005-09-06

La, Anh V. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S635000, C340S660000, C324S556000, C324S133000, C324S428000

Reexamination Certificate

active

06940416

ABSTRACT:
This invention relates to a limited range low voltage testing, regulating, and indicating device comprising a detector and low voltage measurer of magnitude in a switch-regulated power supply circuit wherein indicator LEDs are operated directly from a power supply wherein continually increasing current draw provided by shunt switching operates to cause the first display LEDs to “fade” in an overlapping pattern of activation, in and out with slight voltage changes. Increased voltage causes a second LED to turn on. Further increased voltage causes the second LED to turn off and a third LED to turn on. Shunt and series connected voltage regulators selectively exert control over the LEDs.

REFERENCES:
patent: 3927399 (1975-12-01), Fuzzell
patent: 4027227 (1977-05-01), Engel
patent: 4028057 (1977-06-01), Nelson
patent: 4056765 (1977-11-01), Scheidler et al.
patent: 4470039 (1984-09-01), McBrian
patent: 4647831 (1987-03-01), O'Malley
patent: 4898229 (1990-02-01), Brown
patent: 4983955 (1991-01-01), Ham et al.
patent: 5063491 (1991-11-01), Shigeo
patent: 5309084 (1994-05-01), Jiang
patent: 5495147 (1996-02-01), Lanzisera
patent: 6075448 (2000-06-01), Verkhovskiy
patent: 6153980 (2000-11-01), Marshall

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