Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 504
n the right proportions a the tungsten filament being arranged to act as ballast resistance, thus Mercury vapour lamp. 475 reducing the power usuallj^ lost in wliich are normally short-circuited,this way. A feature of the lamp is When the P.D. is applied to the lampthe new method of starting. A… … Iu;. :;. UDic^ Iii.stalhitiou i.f Ortliochrumatic Muicuiy LiiiDii.s. sion has been made to the inductive which gives the vessels a twist, thusdischarge method. There are Uvo sei^arating the electrodes and mo-mercury electrodes in vacuum vessels mentarily breaking a highly inductive 476 THE…
Lighting
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