Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 447
he difficulties to be met with inalternate current machines, and enable them to avoid making mistakesin their applications in the future. I will pass an alternate currentthrough one coil of the electro-magnet, and also through one incan-descent lamp. That lamp glows very feebly indeed. But as soon… … Fig. 19.—An alternate current passing throughone arm of an electro-magnet and an incandescentlamp. When the ends of the other coil are separ- * ated the lamp Is dull; when joined the lamp isbright. is exercising a large power in magnetizing and demagnetizing thatcore. That core exercises its…
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