Abstract
The method of fluorescent lamp lighting for interior of electric car on direct current source, instead of alternating current, is the simplest and the most convenient.
Especially, it is a gospel for electric car which has no motor generator itself, to find an efl'iicient lighting method with trolley as electric source.
The grid type fluoresecent lamp and its series operating circuit group, whicn were devised for these purposes, are in use for about 200 cars, and obtained very good results.
Described in this article, are various characteristics of this lamp, series operating system, and dark end effect which is peculiar to direct current operation, as according to our experimental esults.
