Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 501
d 320 watts in the case of the 472 THE ILLUMINATING ENGINEER. able dimensions. Tliis regulation, how-ever, also depends on the surface ofradiation of the luminous portion. Fig. 5 represents the characteristiccurve of a burner. The curve becomesrapidly parallel to the ordinate in the The voltage… … FiG. 4.-Showing Metal Vanes for Conducting away the Heat and keeping the Temperatureof ihe Tube within limits. region of normal operation. As a justed for 50 volts at the tube terminals, matter of fact, the 110-volt lamp it will consume 342 ami»., and its operates vntli considerably less than…
Lighting
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