"Roentgen" induction coils and other X-ray apparatus (1903)
James G. Biddle Company · Philadelphia : James G. Biddle · leaf 24
um as well as the current consumed from the service mains. The economy of maintenance accompanying the use of a motor-generator over that obtained with storage batteries should be seriouslyconsidered when the mechanical interrupter is installed. Direct Current Motor=Generators, With secondary… … HOLTZER-CABOT ELFXTRIC CO. ROSTON, MASS, hIGURE 12. Alternating Current Motor=Generators. nU SATISFACTORY and reliable Alternating Current Motor-Gen-Iri erator is necessary when the alternating current is to be used ^— in conjunction with a mechanical or other direct current in-terrupter. We…
X-rays · Induction coils · Radiography
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