Fluorescent lamp with cathode heat switches

Details Fluorescent lamp with cathode heat switches Fluorescent lamp with cathode heat switches

H - Electricity

01

J

315/34, 315/49

H01J 61/56 (2006.01) H01J 7/44 (2006.01) H01J 9/04 (2006.01) H01J 61/54 (2006.01)

Patent

CA 1218106

FLUORESCENT LAMP WITH CATHODE HEAT SWITCHES ABSTRACT OF THE DISCLOSURE 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. \

445707

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