An elementary manual of radiotelegraphy and radiotelephony for students and operators (1916)
Fleming, J. A. (John Ambrose), Sir, 1849-1945 · London, Longmans, Green & co. · leaf 366
is loosely coupled to another oscillation circuit con-sisting of a condenser, inductance, telephone, and crystal rectifier.The coupling or mutual inductance of the two circuits is veryweak, the primary and secondary helixes frequently being set aconsiderable distance apart, as shown in Fig, 12. The… … [neproducedfrom The Electrician by permission.Fia. 12.—Poulsen Eeceiving Apparatus for Radiotelephony. the rectifier permits the current to pass through the telephone onlyin one direction. 7. Present State and Achievements of Radiotelephony.—Thetransmission of articulate speech to a distance by…
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
