PREHEATING CHARACTERISTICS OF A FLUORESCENT LAMP CATHODE

摘要

1) As for the requirements, it is preferable that the preheating period is not exceed the time of around 3.0 s in the current-controlled preheating mode. 2) The reason why the heating energy, until the emission time is reached, by the lamp voltage monitoring method takes a minimum value~(2,3))' can be understood in terms of the limited thermal conductivity of the emissive material~(4)). 3) It may be desirable to apply the above-mentioned average resistance of a cathode to a new substitution resistor during the preheating test for electronic drivers.