The influence of programmed start ballast in T5 fluorescent lamp lifetime

Santos, Anderson Soares dos; Toss, Marcelo; Reis, Fernando B. dos; Tonkoski, Reinaldo

doi:10.1109/iecon.2005.1569012

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…Other researchers operating similar systems with accelerated cycles used 'off' times shorter than 15 minutes. [8][9][10]13,14 Figure 1 The racks holding the lighting systems…”

Section: Methodsmentioning

confidence: 99%

Influence of ballast starting method and operating cycle on the life of T5 fluorescent tubes and CFLs

Chondrakis

Topalis

2011

Lighting Research & Technology

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This paper presents the results of an experimental investigation of the life of T5 fluorescent tubes and compact fluorescent lamps with non-integrated ballasts. The lamps were operated on five different cycles with either instant start ballasts or electrode preheating ballasts. The influence of the operation time on the lamp life of every start was examined. During both the start and the operation of the lamps, measurements of particular electrical characteristics were carried out. The investigation focused on the effect of the starting and operating characteristics on the lamp lifetime. Lamps operating with ballasts providing preheat at the start up, showed a systematic change in certain electrical characteristics that can help to predict their failure.

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“…Other researchers operating similar systems with accelerated cycles used 'off' times shorter than 15 minutes. [8][9][10]13,14 Figure 1 The racks holding the lighting systems…”

Section: Methodsmentioning

confidence: 99%

Influence of ballast starting method and operating cycle on the life of T5 fluorescent tubes and CFLs

Chondrakis

Topalis

2011

Lighting Research & Technology

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“…Thus, the feedback of the LED power PL,f is obtained and compared to the reference LED power PL,r, then an appropriate switching duty cycle d is finally provided to a main switch S 1 . Four resistors R 1 (1.5 ) are inserted to each output node of the electronic ballast to pretend as filament resistances R f of fluorescent lamps, which results in normal turn-on operation at start-up in case of filament voltage sensing type electronic ballasts [16]- [19]. The self-power supply V cc constructed from the zener Z 1 and capacitor C 2 are used to provide the MCU with constant voltage.…”

Section: B the Configuration Of The Proposed Led Drivermentioning

confidence: 99%

A compact and high efficient LED driver compatible with electronic ballast by synchronous voltage doubler rectifier

Nguyen

Lee

Sonapreetha

et al. 2015

2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)

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A compact and high efficient LED driver compatible with various electronic ballasts commercially used in markets is newly proposed, which modulates the LED power by controlling a switching duty cycle of a main switch in synchronous voltage doubler rectifier. Thus, the fluorescent lamp can be replaced with the LED lamp without any change of fluorescent lamp fixture. The zero voltage switching (ZVS) is achieved for different switching frequency of electronic ballast, which leads to high efficiency. Furthermore, neither an inductor, a transformer, nor an electrolyte capacitor is used, which makes this LED driver compact size and long lifetime. A prototype of 16 W LED driver was implemented and experimentally verified for 32 W or 36 W electronic ballasts, where high efficiencies of 93.2%, 91.8%, and 92.3% for instant start, rapid start and programmed start ballasts, respectively, were achieved for a wide range of source voltage 180 V < V s < 260 V, adequately meeting high power factor (PF), low total harmonic distortion (THD).Index Terms--LED driver; electronic ballast; synchronous voltage doubler; zero voltage switching.

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“…The filaments were removed from the interior of broken T5 fluorescent linear lamps. This type of fluorescent lamp is recently replacing T8 or T12 types; hence it is of great interest to know their characteristics [8]. The breaking of the tubes was made smoothly by applying an incremental voltage to a wire of Nickel-Chromium alloy coiled around the tube.…”

Section: Test Devicementioning

confidence: 99%

Evaluation of heat transfer coefficient of tungsten filaments at low pressures and high temperatures

Chondrakis

Topalis

2011

Applied Thermal Engineering

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The influence of programmed start ballast in T5 fluorescent lamp lifetime

Cited by 9 publications

References 3 publications

Influence of ballast starting method and operating cycle on the life of T5 fluorescent tubes and CFLs

Influence of ballast starting method and operating cycle on the life of T5 fluorescent tubes and CFLs

A compact and high efficient LED driver compatible with electronic ballast by synchronous voltage doubler rectifier

Evaluation of heat transfer coefficient of tungsten filaments at low pressures and high temperatures

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