International Library of Technology · Scranton, International Textbook Co. · leaf 434
anism of,the con-stant-potential enclosed-arc lamp is,as a rule, very simple. The feedingis controlled by a magnet connectedin series and there is no need of acut-out. The lamp should, however,be connected to the circuit throughfuses, so that it will at once be dis-connected in case of a short… … 18 ELECTRIC LIGHTING. G7 76. Direct-Current Constant-Potential Enclosed-Arc Lamps.—Fig. 38 shows a lamp that is similar in manyrespects to the constant-current lamp previously described.The general features, such as the framework, clutch, methodof carrying current into the upper carbon, etc., are…
Electrical engineering
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