Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 239
(9 X *S ^<J 2r{? 3/J 36V Fig. 7. Fig. 8. Three-coil pulsating- and alternating-current solenoid. The Three-coil Pulsating- and alternating-current Solenoid,with two rotating brushes, is shown in Fig. 7. Anotherbut similar diagram,f was explained at the close of theformer paper. At the same time…
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