Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 58
ion. The coilsare in ten (10) groups of 100000 ohms each; these groups may be joined inseries or multiple, and in combination of series and multiple. Each groupis actually made up of four (4) individual coils of 25000 ohms each. Therubber supports are drilled out and do not touch the rods connected…
Electric apparatus and appliances · Equipment and supplies
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