There are two main types of electrical current that flow through your home: Alternating and direct. The vast majority of devices around you are powered by alternating current. By allowing electrons to ...
Patent model for Bell DC generator, 1876. Magnetized octagon steel bar 7.5" long with revolving wheel. Contact springs in center of bar. Two binding posts. See US Patent 181553, Generating Electrical ...
A hand-operated electrical generator, type GN-35, for a type SCR-131 radio. Rectangular metal case, olive drab color. Comes with two crank handles and a stand. Metal tag reads: "Signal Corps U.S. Army ...
IN the English Electric Co.'s Journal for October, a description is given of the high-pressure D.C. dynamos it constructs for use in electrostatic precipitation plant. The Whessoe Foundry and ...
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