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Scientific American, Vol. 94, No. 7 (February 1906) (1906)

leaf 3

An illustration from Scientific American, Vol. 94, No. 7 (February 1906), 1906, leaf 3
charging current is thrown on. The object of BY A. FREDERICK COLLINS. are brought out and are connected to a dial switch In garages it often becomes necessary to convert an mounted on the front of the panel. The purpose of the pilot lamp, which is connected in shunt across the alternating current… … OC £0© tion, and for charging electric vehicle batteries it is fits will operate on any frequency from 25 to 150 cycles almost ideal. very satisfactorily. They are, however, designed espe- Fig. 4.—CONNECTIONS OF MERCURY ARC RECTIFIER For a number of years the above company has con- cially for 60…

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