Rotation signal detection device of DC motor with brushes

Details Rotation signal detection device of DC motor with brushes Rotation signal detection device of DC motor with brushes

1981-09-09

1984-04-17

Weldon, Ulysses

Electricity: motive power systems

Automatic and/or with time-delay means

Speed or rate-of-movement

318264, 318272, 318277, G05B 500, H02H 708

Patent

active

044437455

ABSTRACT:
Disclosed is a rotation signal detection device for use with a circuit for driving a DC motor with brushes, the device comprises a differential amplifier for detecting a pulse signal component of a waveform of the current supplied to the motor, a circuit for shaping an output of the differential amplifier, thereby actuating a logic circuit for controlling rotation of the motor by a DC level signal obtained from said shaped waveform.

REFERENCES:
patent: 3346725 (1967-10-01), Allured et al.
patent: 3675126 (1972-07-01), Chilton
patent: 3732477 (1973-05-01), Cicatelli
West, L. E., IBM Technical Disclosure Bulletin, vol. 10, No. 1, Jun. 1967, pp. 88-89, (Motor Control Circuit).

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