Fluorescent lamp without ballast

Details Fluorescent lamp without ballast Fluorescent lamp without ballast

1983-10-03

1985-04-02

Dixon, Harold

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

313493, 313611, 315 73, 315180, 315181, H01J 744

Patent

active

045089930

ABSTRACT:
It is known that electrical discharges in capillary tubing shows a positive volt-ampere characteristic even for low pressure gas fills. In contrast, conventional fluorescent lamps exhibit a negative volt-ampere characteristic and, accordingly, require special ballast circuits for operation. In the present invention, a fluorescent lamp comprises a plurality of discharge tube sections which are connected by capillary tube sections to provide the necessary ballasting action to prevent lamp current runaway. In one embodiment of the present invention, the ballastless lamp is configured in a compact configuration which may include much simpler ballast components configured in a package similar to a conventional screw-in incandescent lamp.

REFERENCES:
patent: 1740030 (1929-12-01), Nagadka et al.
patent: 1759434 (1930-05-01), Case
patent: 1820027 (1931-08-01), McClintock
patent: 1826382 (1931-10-01), Claude
patent: 1930132 (1933-10-01), Reger
patent: 1946726 (1934-02-01), Barclay
patent: 2198513 (1940-04-01), Knoop
patent: 2298239 (1942-10-01), Stirnkorb
patent: 2367595 (1945-01-01), Marden

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