> A related question: Would it be possible to design a circuit > to use fluorescent bulbs with a broken filament? I have a couple > almost new bulbs with burned filaments. It is possible to start & run bulbs without filaments with suitable circuitry BUT this is additional expense if you already have fittings and AFAIK the tube life is significantly reduced. You need a high voltage to strike and some inverter circuits provide this. RM _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist