The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 62
n from thecaustic soda (NaHO), and metallic copper is deposited onthe perforated cylinder. The E.M.F. of the cell is low,being only about 84 volts, but this is compensated for by itsconstancy, freedom from local action, and by its low internalresistance. The outer containing vessel of the No. 3… … Fig. 22.—Scale % 4o PRACTICAL TELEPHONE HANDBOOK The cell is really a form of the cell invented by Lalande,of which there have been numerous modifications brought outby different inventors, among others that invented by Edison,and known as the Edison-Lalande cell, a view of which isshown in Fig.…
Telephone
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