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 412
Fig. 78. Center Span Strain Insulator Suspension FixtureCourtesy of General Electric Company Special fixtures for the large lighting units, such as the various typesof arc lights, are now available. Fig. 80 shows an enclosed arc lampfitted with a shade and a concentric diffuser. The effect of this… … -WITHOUT REFLECTORyONIC^L OR IMPROVED STREET REFLECTOR-R/HDIFIL REFLECTORFig. 79. Distribution Curves for Tungsten Lamp with DifferentTypes of Reflector.. combination is best shown in Fig. 8L Fig. 82 shows the change inthe illumination curve produced by such shading. Inverted arcshave some…
Electrical engineering
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