Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 237
e variable field of force. Itbecomes then, rather difficult to plot exactly the real flow ofmagnetic stress along the corresponding positions of theplunger. It belongs to the class of intermittent mechanisms;and, like single-stroke devices, requires reactive forces torestore it to its original… … iaO° 13S ^a fS 0° ^S SO 73S /6ff Fig. 5. Fig. 6. Two-coil pulsating-current solenoid mechanism. Figs. J and ^ show the real curves of the distribution ofpotential, taken with voltmeter, as indicated, and with noother external circuit, from a small separately-excitedmotor, run as a dynamo, with…
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