Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 303
e emission of heat; hence the increase inefficiency shown in Fig. 2. Were it not for the rapid disintegrationof the ordinary carbon filament at high temperature, an efficiencyhigher than 3.1 watts could be obtained. By a special treatment ofthe carbon filaments, the nature of the carbon is so… … 92 94 96 98 100 102 104 106 108 110 Fig. 3. Curves of EflSciency and Life of Carbon Filament Lamp filament lamps, or merely as gem lamps, and they will be describedmore fully later. Relation of Life to Efficiency. By the useful life of a lamp ismeant the length of time a lamp will burn before its…
Electrical engineering
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