Facsimile drive with dynamic brake

Details Facsimile drive with dynamic brake Facsimile drive with dynamic brake

1977-12-23

1979-04-10

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

318375, 358277, H04N 136

Patent

active

041491939

ABSTRACT:
In a facsimile transceiver, the scanning drum is driven by a DC motor which is coupled to a source of drive pulses having a duty cycle which controls the speed of the DC motor. Dynamic braking pulses are applied to the motor between the drive pulses. The braking current pulses are generated as a result of armature counter EMF and flow through a low impedance path around the DC motor.

REFERENCES:
patent: 2629844 (1953-02-01), Eserkaln
patent: 3218529 (1965-11-01), Evans
patent: 3335351 (1967-08-01), Morris

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