The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 606
t rec-tified in a verysimple, silent, andhighly efficientmanner. Thestorage battery isshown at j joinedto the tube at b. The connection at c is for the purpose ofstarting the arc, the tube being tilted so as to flow asmall quantity of mercury over connections B and c andthen tilted back. The arc is… … Mercury-Arc Rectifier 578 APPENDIX The efficiency of the apparatus ranges from about 76 % atone quarter of full load and upwards. For further particulars the reader is referred to an articleby Mr J. E. Milnes in The National Telephone Journal for March1908. New Pattern Instrument Plug and…
Telephone
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