Ultraviolet fluorescent lamp with unique drive circuit

Details Ultraviolet fluorescent lamp with unique drive circuit Ultraviolet fluorescent lamp with unique drive circuit

2005-01-04

2005-01-04

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C362S546000

Reexamination Certificate

active

06838837

ABSTRACT:
A unique drive circuit for a fluorescent lamp, as well as a housing for such lamp and drive circuit, designed for mineral museum displays, are disclosed herein. The drive circuit comprises a ballast subcircuit, a separate filament transformer subcircuit for pre-heating the lamp cathodes, and a relay between the subcircuits. The separate filament transformer subcircuit obviates the need for a conventional starter circuit for the fluorescent lamp. This way of pre-heating the cathodes prolongs the useful life of the lamp by making it possible for the lamp to undergo thousands of “on-off” cycles without the heretofore usual deterioration of the cathodes. The relay prevents the high voltage of the ballast from “hitting” the lamp cathodes before the cathodes have been pre-heated by the transformer subcircuit. Also disclosed is a method for using such a lamp, drive circuit, and housing to irradiate fluorescent minerals in a display case.

REFERENCES:
patent: 5640069 (1997-06-01), Nilssen
patent: 5898277 (1999-04-01), Farnsworth et al.
patent: 5942727 (1999-08-01), Strange
patent: 6076943 (2000-06-01), Lassovsky
patent: 6087781 (2000-07-01), Leppelmeier
patent: 6114809 (2000-09-01), Winsor

Affiliated with

Also associated with

Rating

Ultraviolet fluorescent lamp with unique drive circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultraviolet fluorescent lamp with unique drive circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet fluorescent lamp with unique drive circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3434081