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 40
nmcliused in connection with telephones and electric bells, or where itis desired to use it for only a few minutes at a time. If used fora long- period, the current strength decreases, but quickly regainsits original j)ower when the current is interrupted. It is thereforewell adapted for…
Electrical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
