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Showing 1 to 8 of 8 for “"Electronic ballast"”.
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Piezoelectric Transformer Characterization and Application of Electronic Ballast
… are studied and developed for use in electronic ballasts. By replacing conventional L-C resonant tanks with piezoelectric transformers, inductor-less piezoelectric transformer electronic ballasts have been developed for use in fluorescent lamps. The piezoelectric transformer is a …
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An improved electronic ballast for the fluorescent lamps
The ''charge pump" electronic ballast circuit, which employs a charging capacitor and a high frequency ac source to implement the power factor correction (PFC), has become an attractive topology for ballasting the fluorescent lamps because it eliminates the use of a bulky boost inductor. But the …
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Three Dimensional Passive Integrated Electronic Ballast for Low Wattage HID Lamps
… avoided by the use of more efficient lamps and ballasts [1]. High intensity discharge (HID) lamps, one category of gas discharge lamp, have been widely used in both commercial and residential lighting applications due to their merits of high efficacy, long life, compact size and good color …
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Design of a Radial Mode Piezoelectric Transformer for a Charge Pump Electronic Ballast with High Power Factor and Zero Voltage Switching
In a conventional electronic ballast for a fluorescent lamp, inductor-capacitor-transformer tank circuit is used. A Piezoelectric Transformer (PT) can potentially be used to replace such a tank circuit to save space and cost. In the past, ballast design using a PT requires selecting a PT from …
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Advanced High-Frequency Electronic Ballasting Techniques for Gas Discharge Lamps
… output are the main advantages of high-frequency electronic ballasts for gas discharge lamps. However, power line quality and electromagnetic interference (EMI) issues arise when a simple peak rectifying circuit is used. To suppress harmonic currents and improve power factor, input-current-shaping …
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Advanced Single-Stage Power Factor Correction Techniques
… and their performance is evaluated. VS-CPPFC electronic ballasts with and without dimming function are also presented. The average lamp current control with duty ratio modulation is developed so that the lamp operates in constant power with a low crest factor over the line variation. The …
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Digital pulse interval modulation for indoor optical wireless communication systems
… a fluorescent lamp driven by a high-frequency electronic ballast, which is potentially the most degrading source of ambient light. It is found that such interference results in an average optical power requirement that is almost independent of the bit rate. The analysis then goes on to consider …
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Predicción del tiempo de vida de las lámparas fluorescentes. Aplicación a usos fotovoltáicos
… relating the lifetime of fluorescent lamps, with ballast to factor that contribute to electrode degradation, using different on and off times in the durability test. Further, the relationship between conventional and accelerated durability test characterized by different fluorescent lamp …