Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 115
bells B and B will ring from pushP. Bells, if connected in this manner, should have as nearly aspossible the same resistance, otherwise the bell of lower resistancewill take so much current that there will not be a sufficient amountleft for the other. Also, the batteries must be of greater… … SIMPLE COMBINATION GAS AND ELECTRIC FIXTURE IN A DINING ROOM
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
