New developments; facts affecting selection and use of lamps; characteristics; standardization; typical mortality or "burnout" curve for railway light-signal lamps, based on laboratory tests; extreme sensitiveness of lamp life to operating voltage indicated by this volt-light curve; effect of applied voltage double-filament lamps; etc. (See also Ry Signaling v 26 n 6 June 1933 p 164-6 and 172)
Electric lamps for railway signals
Int Ry Congress Assn -- Bul
1933
6 pages
Article (Journal)
English
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