International Library of Technology · Scranton, International Textbook Co. · leaf 237
tiG. 1U21. made are those known as the Weston instruments,general form is shownin Fig. 1020. Theseinstruments are madeon the principle of theDArsonval galvanom-eter (Art. 2476),as shown in the sec-tional view, Fig.1021. Fig. 1022 shows themagnetic circuit ofthis form of instru-ment. The… … 1672 ELECTRICAL MEASUREMENTS. out to make a cylindrical opening. In the center of this open-ing is a stationary soft iron cylinder C, supported in placeby a screw J/passing through a lug on the brass plate B.This cylinder being of less diameter than the openingthrough the pole-pieces, there is left…
Electrical engineering
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