Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 663
h is shown at the left in fig. 430. Theprinciple of this switch is simply to short circuit the armature,and cut off the current from the field magnets before the externalcircuit is broken. For this purpose the two metallic contacts,d dj are brought near enough so that the switch A may touchthem… … Fig. 430. THE REGULATOR. 643 THE REGULATOR. It is very desirable that the supply of current should remainconstant in an arc light circuit, and it is also desirable that thepower consumed should diminish when some lights are cut out
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-169-132.webp)
