|Title||Effect of Filament Power Removal on a Fluorescent Lamp System|
|Publication Type||Conference Paper|
|Year of Publication||1985|
|Authors||Rudolph R Verderber, Oliver C Morse, Francis M Rubinstein|
|Conference Name||Annual IEEE-IAS Conference|
|Conference Location||Toronto, Canada|
Two techniques are used to measure the effect of removing the filament power from a two-lamp, F-40, rapid-start fluorescent lamp system. The changes are measured for a standard CBM core-coil ballast and for a solid-state ballast operating the lamp at high frequency. There is a 4 to 6% increase in system efficacy when the filament power is removed. Removal of filament power also decreases filament temperature from 1000 °C below 700 °C in lamps operated at 60 Hz, and from above 600 °C to 300 °C in lamps operated at high frequency. The study shows that the arc current and anode fall also determine filament temperature.
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