FIELD: electrical engineering. SUBSTANCE: high-pressure gaseous-discharge lamp has discharge tube enclosed in outer envelope with two main electrodes and starting electrode located on outer surface of discharge tube. The following relationship is realized to decrease initiation voltage of lamp: n= (0.7-2.3)
, where n is number of turns of starting electrode on discharge tube; l is distance between main electrode of discharge tube; d is outer diameter of discharge tube. EFFECT: decreased lamp initiation voltage. 1 dwg
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