Review of salient points of three systems; Metrovick system (Patent No 472192 -- Worrall); English-Electric system, first applied in Apr 1940 to existing English Electric a-c hoist; British-Thomson-Houston system.
Dynamic braking of alternating current electric
Colliery Guardian
Colliery Guardian ; 170 , n 4385
1945
10 pages
Aufsatz (Zeitschrift)
Englisch
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