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 348
<^ 1 1 * __1 oos/ … a transmitter in combination with the pole changer; at the Pitts-burg end it is between the pole changer and the split; at the FortWayne end between the battery and the pole changer. 819 THE ELECTRIC TELEGRAPH 87 We have seen that it is tlie function of the pole ehanrrer toalter the direction of…
Electrical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
