FIELD: electric engineering, possible use in electric drives with broad engine speed alternation range, for example, by control signal.
SUBSTANCE: device for adjustment of electric engine rotation frequency contains adjuster of rotation frequency, rotor position indicator, two multiplexers, two adders, two impulse generators, frequency-phase discriminator, sine-cosine generator of support signal.
EFFECT: achievement of broad range of adjustment and smooth rotation of shaft of non-contact direct current engine in area of low and infra-low frequencies.
2 dwg
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