APPARATUS FOR DISCHARGE LAMPS

摘要

The circuit for improving the illumination efficiency utilizing high speed switching of a switching transistor in an inverter includes comparators (COMP1,COMP2) for converting signals of a multivibrator to rectangular signals for supplying the power to a lamp by alternative turning on the switching transistors (TR1,TR2), a comparator (COMP3) generating low level signal which prevents the operation of the multivibrator (3) when a resistor (R1) detects the large loss-current and a comparator (COMP4) for preventing the overheat of an inverter (2).