Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 64
Fig. 27. Fig. 28. Variations of e.m.f. across the terminals of 5will affect A, which is calibrated in amperes bycomparison with a standard or by calculation. The Weston Voltmeter. The principle of theWeston voltmeter or ammeter for direct currentis that of the DArsonval galvanometer. The mov-ing…
Electric testing · Electric apparatus and appliances
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
