Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1975-11-24
1977-12-13
Schaefer, Robert K.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318314, 318341, H02P 500
Patent
active
040631389
ABSTRACT:
A drive circuit for pulse synchronized motor has a circuit for generating an output signal corresponding to the frequency of synchronizing pulse signals and a voltage setting circuit for automatically setting, according to the output of the output circuit, the voltage to be applied to the motor within a synchronizable voltage range of frequency of the synchronizing pulse signals for synchronizing the motor. The drive circuit is capable of automatically maintaining synchronized state over a wide frequency range.
REFERENCES:
patent: 3008075 (1961-11-01), Scott
patent: 3772580 (1973-11-01), Odone
patent: 3971974 (1976-07-01), Ichiyanagi
patent: 4002962 (1977-01-01), Miller
Indyk Eugene S.
Nippon Kogaku K.K.
Schaefer Robert K.
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