You may find it worth looking into electrodeless lamps/tubes http://en.wikipedia.org/wiki/Electrodeless_lamp#Magnetic_induction_lamps Fluorescents can be activated by internal and external magnetic fields ....= ..... This means no electrodes to burn out. 99guspuppet --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .