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 385
s way the dot and dashcode is formed and im-printed on the tape. The above appliancesare the principal ones mak-ing up the ordinary wire-less telegraph systems, butthere are a number of otherand minor devices utilizedto render more accurate theworking of the instru-ments- One of these is… … Fig. 36. Choking Coil. 351 22 WIRELESS TELEGRAPHY qnoncy currents which may be set np by sparkinp;, cither in the coherer or between the relay contacts. Oscillatio)i Tidnrformers are used in many systems of recent desicrn; tliese are constructed for stepping up or down high-fre-quency and…
Electrical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
