Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 383
atinum tilament; this done, the ends of theloop are attached to the leading-in wires 2, 2 sealed in a glass biilbwhich is tinally enclosed in a silver case. The silver shell is shownat 3 and the glass globe at 4. A new form of barretter em-ploys a very small column of nitric acid and a minute… … Marcoui Polarized Kelay.Fig. 23. for their revsistance variations are too limited to permit the relayto be actuated; the filings coherer is the only type of detectorknown that can be employed in combination with a relay. Relays. Of relays there are several forms, but \\\ii polarizedrelay^ shown in…
Electrical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
