lostdoggy King Duffus  4,787 posts Joined Aug 2004 Location: Queens, NY More info | Oct 26, 2007 12:56 | #16 Newer high efficiency Fluorescent light fixtures or Compact Fluorescent lamps uses electronic ballast and older fluorescent light fixture uses magnetic ballasts. Electronic ballast is capable of converting line frequency to higher frequency. So high that it will appear to the lamp as two dc voltage(+/-). The color is a result of the Phospherous glowing from the plasma form inside of the glass tube.
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