Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 584
ngthe lower carbon. In a series arc lamp the shuntcoil is used to regulate the voltageover the arc. With constant po-tential arc lamps this shunt coilis not needed, owing to the factthat the voltage over the lampis practically constant. Fig. 94shows a diagram of an arc lampfor use on constant… … FIGURE 94. 166 ELECTRICITY FOR ENGINEERS then through the carbons and through the resistancecoil R to the other terminal of the lamp. The actionof the lamp is as follows: Current passing over thesolenoids M M is regulated by the resistance acrossthe arc. This current produces an electromagneticpull…
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-339-192.webp)
