International Library of Technology · Scranton, International Textbook Co. · leaf 331
y an insulated handle with a terminal on the end.This terminal is connected, by means ofa flexible cable, to one terminal ofcoil B, and when tests are being made,the terminal is simply brought intocontact with the various lines. Thissimplifies matters considerably wherethere are several circuits to… … 33. Electi-ostatic Ground Detector.—Ground detect-ors operating on the electrostatic principle are used to quitea large extent. They have the advantage that they requireno current for their operation and may be left connected tothe circuit all the time, thus indicating a ground as soon asit occurs.…
Electrical engineering
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