Theoretical and experimental investigation of induction machines (1900)
Schulz, William Frederick, Marble, Harry Curtiss · leaf 52
et coils. By this arran:2ement the bell would ring by the action of the opposing spring, wheneverthe circuit was broken simultaneously on both contact wheels.This method of using a closed circuit electric bell with thetwo contact breakers in parallel was adopted after trying manyother devices* When…
Electric machinery, Induction · Theses
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