es. The movable vane is per-manently connected to earth, and is inductively acted uponby each pair of fixed secondary vanes. The force of each 114 STATIC ELECTRICITY. pair being equal and opposite the pointer takes a medialposition. This instrument is thus hetrostatic in its oper-ation. If,… … Fig. 57. dency to lie under the other pair of fixed vanes. Thismay be made to indicate not only a ground, but on whichwire such ground is. Since there is no electrical connec-tion between the line wires and the instrument save to thetwo primary fixed vanes, and as these are imbedded inthe base of…
Electronics · Electricity
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