A study on discharge lamp current waveforms in constant wattage ballast systems
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概要
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This paper is concerned with the experimental investigation of the effects of the performance characteristics of the choke type constant wattage ballast on the lamp current waveforms or the values of the lamp current crest factor.The re-ignition phenomenon of the discharge lamp under AC operation is represented by an incomplete switch which consistes of a switch and an effective resistances in both the abnormal glow and the arc discharge regions.The high peaky lamp current is attributed to the transient phenomenon of the lamp operating circuit when the discharge lamp re-ignites. The effects of several ballast circuit elements, such as the magnitudes of both the capacitance and the series linear reactor, the magnetic characteristic and the geometry of the saturable auto-transformer, on the lamp current crest factor are experimentally investigated.
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関連論文
- Study on characteristics for lead-peak type ballasts for discharge lamps : Part II Characteristics of lamp current waveforms under lamp operation
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- Design method and electrical characteristics of choke type constant wattage ballasts for discharge lamps
- A study on discharge lamp current waveforms in constant wattage ballast systems