A new heating concept for fluorescent lamp ballasts

Author

Klien, Dietmar

Author_Institution

Tridonic, Dornbirn, Austria

Volume

5

fYear

2000

fDate

2000

Firstpage

3428

Abstract

A filament-heating concept for dimmable and nondimmable electronic ballasts has been developed. The filaments are supplied by an additional heating transformer, which is connected to the half bridge and controlled by a bi-directional transistor-set. This makes it easy to save energy by cutting off the heating-current in the normal operation mode for nondimmable ballasts. It is possible to adjust the value of the filament voltage with the duty-cycle of the heating transistor-set. This feature is useful for “multi-lamp-ballasts” which supply lamps with different electrical characteristics

Keywords

electric heating; energy conservation; fluorescent lamps; lamp accessories; power transformers; power transistors; bi-directional transistor-set; dimmable electronic ballasts; electrical characteristics; energy savings; filament voltage; filament-heating concept; fluorescent lamp ballasts; half bridge; heating concept; heating transformer; heating transistor-set duty-cycle; multi-lamp-ballasts; nondimmable electronic ballasts; Bridge circuits; Electrical resistance measurement; Electronic ballasts; Fluorescent lamps; Heating; RLC circuits; Resonant frequency; Switches; Temperature; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2000. Conference Record of the 2000 IEEE

Conference_Location

Rome

ISSN

0197-2618

Print_ISBN

0-7803-6401-5

Type

conf

DOI

10.1109/IAS.2000.882659

Filename

882659