FLUORESCENT LAMP WITH CATHODE HEAT SWITCHES

摘要

FLUORESCENT LAMP WITH CATHODE HEAT SWITCHES A rapid start fluorescent lamp comprising a pair of cathode mounts each having a pair of lead-in wires for cathode heating current, and a thermal switch to turn off the heating current after sufficient cathode heating for the lamp to operate. A third lead-in wire in each mount bypasses the thermal switch and is used for heating the cathodes to activate them during manufacturing.