Constant percent break type dial pulse corrector

Details Constant percent break type dial pulse corrector Constant percent break type dial pulse corrector

1978-07-26

1980-06-10

Konick, Bernard

328164, H04Q 136

Patent

active

042074363

ABSTRACT:
The first monostable multivibrator of a series connected pair of monostable multivibrators is responsive to each break interval of input dial pulses for establishing a fixed time delay after which the second multivibrator initiates a corrected break interval and starts a first timing capacitor thereof charging at a rate set by a fixed time constant. Each input break interval also causes a capacitor of a second timing circuit to start discharging at a rate set by another fixed time constant, the time that the second capacitor starts discharging being a function of the pulse repetition frequency of input dial pulses. When the charge voltages on the two capacitors are the same values, the output of a comparator resets the second multivibrator to terminate an output break interval so as to cause corrected dial pulses in the output thereof to have a constant percent break.

REFERENCES:
patent: 3092691 (1963-06-01), Burns et al.
patent: 3312784 (1967-04-01), Draper, Jr.
patent: 3700821 (1972-10-01), Savage
patent: 3794775 (1974-02-01), Hicks et al.
patent: 4029907 (1977-06-01), Jorgensen et al.

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