LOW VOLTAGE SODIUM DISCHARGE LAMP AND ITS OPERATING CIRCUIT

摘要

A low-pressure vapour electric discharge lamp (L) has a discharge tube filling consisting of neon alone and is connected to a circuit capable of supplying a high frequency current to the lamp. Using a high frequency current means that the lamp can be ignited, even though there is no argon in the discharge tube, contrary to convention. Thus the lamp can be operated a point closer to that of maximum efficacy.