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 318
s i O J w ^^ i O o h| ^^w wo H1-5O> ELECTRIC LIGHTING 19 The advantages claimed for the Nernst lamp were: high effici-ency; a good color of light; a good distribution of light without theuse of reflectors; a long life with low cost of maintenance; and acomplete series of units, thus allowing its… … Fig. 12. Horizontal Distribution Curve for Single-Loop Carbon Filament Nernst lamps were made for 110- and 220-volt service and insizes from 66 to 528 watts, giving a mean candle-power below thehorizontal of from 50 to 500 and an efficiency of from 1.38 to 1.09watts per mean hemispherical…
Electrical engineering
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