Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 75
jar is placed a porous pot C containing a strip ofthin sheet copper D, and a saturated solution of sulphate ofcopper (also called blue stone and blue vitrol ). The zinc is preferably of the Leclanche form, which will be PRIMARY CELLS 55 found to be cleaner, more durable, and cheaper than a… … FlG. 52.—Simple Daniell cell for closed circuit work. To maintain a constant current for anindefinite time, it is only necessary to maintain the supply of copper crystals and zinc.The cell as shown in the figure is easily made by following the direction given in theaccompanying text. In mixing the…
Electrical engineering
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