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H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K47/00—Dynamo-electric converters
H02K47/18—AC/AC converters
H02K47/22—Single-armature frequency converters with or without phase-number conversion
H02K47/26—Single-armature frequency converters with or without phase-number conversion operating as under- or over-synchronously running asynchronous induction machines, e.g. cascade arrangement of asynchronous and synchronous machines
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FR429510D1910-05-091911-05-08Transformateur de haute fréquence, destiné plus spécialement à la télégraphie et à la téléphonie sans fil
ExpiredFR429510A
(fr)