A power conversion circuit senses an output voltage to detect shorted lamp conditions in a backlight system. The power conversion circuit can drive at least one fluorescent lamp. A voltage sensing feedback circuit, such as a capacitive voltage divider or a resistive voltage divider, senses the output...http://www.google.fr/patents/US6870330?utm_source=gb-gplus-shareBrevet US6870330 - Shorted lamp detection in backlight system
