Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 501
internalmechanism of the duplex lamp is substantially the same as thatof the single lamp, with the addition of certain devices for shift-ing the action of the regulator from one carbon-holder to theother, when necessary, and hence it will be more convenient todescribe this lamp in its duplex form… … Fig. 289. THE WESTON AEC LAMP. 481 Referring to the figures, D D represents the exterior of thecylindrical coils of the electro-magnet, which is mounted uponthe frame A in such a position that the centre of its upper pole,which, for convenient explanation, we will assume to be the
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-434-268.webp)
