Triac Dimmable Integrated Compact Fluorescent Lamp

Janczak, J.; Gradzki, P.M.; Wacyk, Ihor; Gavas, A.; Pardijs, D.; DeMol, E.; Serres, A.

doi:10.1080/00994480.1998.10748219

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus (13) The following instantaneous power-balance equation can also be derived: (14) If and are angles, at which the rate of change of equals zero, it can be shown that and (15) By using (12) and (13) to solve (14) (16) Hence, the peak-to-peak ripple voltage -at the dc-link can be approximated by if if (17) As -monotonically increases with -…”

Section: ) Design Of the Output Capacitor Cmentioning

confidence: 99%

“…The dimming operation is based on adjusting the switching frequency of the inverter so that the reactance of the series inductor can be varied and thus the lamp power can be controlled. Manuscript In order to simplify the overall circuitry and reduce the manufacturing cost, many passive PFC circuits and single-stage electronic ballasts with dimming features have recently been reported [7]- [14]. Some of them minimize the circuit structure by integrating the switch in the PFC into one of the switches in the inverter.…”

Section: Introductionmentioning

confidence: 99%

“…A TRIAC-based light dimmer itself cannot be used to perform the dimming operation for fluorescent lamps. Recently, ballasts that can provide a dimming feature using a TRIAC-based dimmer at the supply mains have been proposed in [13] and [14]. However, the dimmer has to be modified in [13] so that the actual firing angle is varied within few degrees only.…”

Section: Introductionmentioning

confidence: 99%

“…However, the dimmer has to be modified in [13] so that the actual firing angle is varied within few degrees only. In [14], an ordinary dimmer can be used to adjust the luminous level of a compact fluorescent lamp. The dc-link voltage is kept at a relatively constant value throughout the dimming range.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

TRIAC Dimmable Ballast With Power Equalization

Lee

Chung

Hui

2005

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

A two-stage, two-wire TRIAC dimmable electronic ballast for fluorescent lamps is presented in this paper. It is constructed by using a flyback converter as the input power factor corrector to supply a half-bridge series-resonant parallel-loaded inverter to ballast the lamp. The flyback converter is operated in discontinuous conduction mode so that the filtered input current profile is the same as the TRIAC-controlled voltage waveform. The switches in the inverter are switched at a constant frequency slightly higher than the resonant frequency of the resonant tank. Based on the constant average input current characteristics of the inverter, the dimming operation is simply achieved by pulsewidth modulation control of the magnitude of the flyback converter output voltage. No synchronization network is required between the input and output stages. In addition, a linear power equalization scheme is developed so that the dc-link voltage (and hence the lamp power) is in a linear relationship with the firing angle of the TRIAC. The average output voltage of the dimmer controls the equalized flyback converter output voltage. Modeling, analysis, and design of the ballast will be described. A prototype was implemented to verify the experimental measurements with the theoretical predictions.Index Terms-Electronic ballasts, fluorescent lamps.

show abstract

Section: ) Design Of the Output Capacitor Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

TRIAC Dimmable Ballast With Power Equalization

Lee

Chung

Hui

2005

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Several papers on dimmable CFL that are not compatible with triac dimmers have been published. In [1], a high voltage customized integrated control circuit (HVCICC) was used for dimmable CFL running at 120V, 60Hz AC system. A design of electronic ballast for dimmable CFL running at 220V, 50Hz AC system by using valley-filled charge pump power factor correction (PPFC) technique and switching frequency modulation was reported in [2].…”

Section: Introductionmentioning

confidence: 99%

An analysis and practical implementation of a dimmable compact fluorescent lamp ballast circuit without integrated circuit control

Tam

Hui

Chung

2006

2006 37th IEEE Power Electronics Specialists Conference

View full text Add to dashboard Cite

Traditional compact fluorescent lamps (CFL) cannot be dimmed by triac dimmer. In this paper, the technical issues behind the incompatibility between the triac dimmer and the internal ballast of the compact fluorescent lamp are addressed. Based on the charge-pump concept and voltage dimming control, a dimmable CFL design that is compatible with triac dimmers is analyzed and developed. A 16W CFL prototype has been built and tested. Experiments have confirmed that a wide and stable dimming range from 2.2W to 16W can be achieved.I.

show abstract

A novel dimmable electronic ballast for compact fluorescent lamps using phase-cut incandescent lamp dimmers with wide dimming range and low dimming level lamp ignition capability

Lam

Jain

2010

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

View full text Add to dashboard Cite

Triac Dimmable Integrated Compact Fluorescent Lamp

Cited by 5 publications

References 0 publications

TRIAC Dimmable Ballast With Power Equalization

TRIAC Dimmable Ballast With Power Equalization

An analysis and practical implementation of a dimmable compact fluorescent lamp ballast circuit without integrated circuit control

A novel dimmable electronic ballast for compact fluorescent lamps using phase-cut incandescent lamp dimmers with wide dimming range and low dimming level lamp ignition capability

Contact Info

Product

Resources

About