Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 152
nebridge, galvanometer, battery, and keys, is illustrated in Fig. 19.The rheostat of the bridge is made up of coils, 16 in number, ofdenominations 1, 2, 3, 4, 10, 20, 30, 40,100, 200, 300, 400,1,000, 131 30 ELECTKICAL MEASUREMENTS. 2,000, 3,0(»O, 4,000 olinis —11,110 ohms in :ill. Bridg*- coils… … <1) 0-r- It is, however, impossible to eonstruct a portable galvanometer ofsutiieient sensitiveness for these measurements, and the actuallimits are from .001 ohm to 300,000 or 400,000 ohms. The reversing kty, shown in Fig.20 consists of the blocks 31, JV, /-*,and Xand two plugs which must…
Electrical engineering
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