my final design uses leds to make the lamp light up but i am thinking about using a Cold Cathode Fluorescent Lamp (CCFL). this is a thin glass tube with a small amount of mercury vapor. the inner side of the glass is lined with phosphors with added impurities. this is designed to make a white light and not an ultraviolet light which is harmful to the skin and eyes. unlike hot cathode fluroescent lamps that uses heat to ignite the mercury, cold cathode lights uses a discharge to ignite the mercury and make a plasma. these lights require a ballast to regulate the voltage and to start the light up. i am going to use this light inside my final design. i have a 6v ballast, a 6v lead-acid battery and a 6v 20w solar panel. i am using this light instead of a white led as it is alot brighter.this light is more suited to a lead-acid battery. it does not generate much heat and it has an alround light output unlike a led. this more on CCFL here.
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