By means of new and patented selenium bridge, Radiovisor Parent Co., has succeeded in controlling electric circuits in efficient manner, and Company has applied scheme to operation of burglar alarms, lighting of electric street lamps. to automatic railway control, etc.
Light-controlled electrical circuits
Engineer
Engineer ; 146 , n 3801
1928
2 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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