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1938 - adjusting the space between these two spheres may regulate as many as 750,000 volts

GIANT SPARK GAP

CD 2487094 E&MP15.013

Electric Circuits, Breakers

July 9, 1938

By adjusting the space between these two spheres, Westinghouse engineers are able to regulate as many as 750,000 volts from a transformer before they are applied to a circuit breaker under test at the East Pittsburgh works of the Westinghouse Electric & Manufacturing Company 


Original Caption by Science Service
Westinghouse



National Museum of American History

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