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"See, I have provided a feedback circuit to co-ordinate the pick-up signal with the three-phase RF output. The control must be precise. Can't have it skipping around or we don't get a good alignment." There was a gurgling churkle from the innocent-looking maze as the "borrowed" aerator pump from the FARM supplies began returning the condensate back to the boiler.

To go back to the question of alternating currents, the work done in connection with the two-phase and three-phase currents and the perfection of the rotary transformer has resulted in introducing into central station practice a further means of economizing the cost of production by concentration of power.

There was a flash of searing flame and the reeking smoke of burning flesh those three arms had taken the terrific no-load voltage of the three-phase converter system, and the full power of the alternator had been shorted directly to ground through the comparatively small resistance of his body.

The magnetic field effect, Ishie had explained; but this three-phase RF generator that puzzled him for a while. Then he remembered some theory. Brute strength alone would not cause the protons to tip.

Solar energy would make an ideal replacement; but as yet the research was not complete, and solar energy had not yet been successfully harnessed for the high power requirements of the Lab. Inside this anchor tube ran the thick coaxial cable that fed three-phase electric power from the atomic pile to the ship.

The simple drawing on the ground led to the design of the first induction motor driven directly by A.C.electricity. Tesla emigrated to the U.S.A. in 1884. During the first year he filed no less than 30 patents mostly in relation to the generation and distribution of A.C. mains electricity. He designed and built his 'A.C. Polyphase System' which generated three-phase alternating current at 25 Hz.