Direct input photoelectric pulse initiator for meter telemetry a

Details Direct input photoelectric pulse initiator for meter telemetry a Direct input photoelectric pulse initiator for meter telemetry a

1974-09-26

1976-03-09

Caldwell, John W.

Communications: electrical

Systems

Call station

340201R, 346 14MR, 360 41, G08C 1916

Patent

active

039434982

ABSTRACT:
A completely solid state photoelectric pulse initiator for electric utility meter telemetry and recording systems includes a low power CMOS digital integrated circuit (I.C.) flip-flop output circuit for directly generating output pulses in response to the rate of rotation of a meter movement. A pulse rate dividing circuit is provided by a presettable divide-by-N CMOS digital I.C. in one preferred form for electronically varying the ratio of the output pulses relative to the input pulses. A simplified data magnetic recording receiver circuit is capable of being supplied recorder drive current directly from the Q and Q logic outputs of the output flip-flop to produce non-return-to-zero (NRZ) data pulse recording.

REFERENCES:
patent: 3083357 (1963-03-01), Chapin et al.
patent: 3646539 (1972-02-01), Becker
patent: 3686634 (1972-08-01), Malchman et al.
patent: 3742472 (1973-06-01), Bryant et al.

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