Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 58
when only a few lampsare burning and as more lamps or motors are switchedon, the voltage will drop lower and lower. Modern trans-formers are constructed to give a practically constantvoltage irrespective of the load, and the regulating qual-ity of a constant potential transformer depends mainlyupon… … Fig. 20 Fig. 20 illustrates a transformer having considerablemagnetic leakage because the primary and secondary coilsare some distance apart and are mounted on separate legsof the iron core. When the line current passes throughthe primary coil it generates magnetism in the iron coreand the current…
Motion picture theaters · Electric lighting
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-353-198.webp)
