A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 28
It moved through the field of a permanentmagnet. The instrument was furnished with anumber of coils of insulated wire, which couldbe connected either in series or in mu/tip/e-arc bymeans of a commutator, thus permitting the scalereading to be verified or calibrated by the use of asingle voltaic… … Fig. T2. Ayrton and Ferry A7n?neter. Fig. 12 represents an ampere-meter devised byAyrton and Perry. A device called a commutatorfor connecting the coils either in series or parallelis shown at C. Binding posts are provided atP, PS, and S. The dynamo terminals are con-nected at the posts P, PS, and…
Electricity · Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
