Timing discriminator using leading-edge extrapolation

Details Timing discriminator using leading-edge extrapolation Timing discriminator using leading-edge extrapolation

1981-07-30

1983-12-20

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307228, 307246, 307518, 328147, 328132, H03K 5153

Patent

active

044219954

ABSTRACT:
A discriminator circuit to recover timing information from slow-rising pulses by means of an output trailing edge, a fixed time after the starting corner of the input pulse, which is nearly independent of risetime and threshold setting. This apparatus comprises means for comparing pulses with a threshold voltage; a capacitor to be charged at a certain rate when the input signal is one-third threshold voltage, and at a lower rate when the input signal is two-thirds threshold voltage; current-generating means for charging the capacitor; means for comparing voltage capacitor with a bias voltage; a flip-flop to be set when the input pulse reaches threshold voltage and reset when capacitor voltage reaches the bias voltage; and a clamping means for discharging the capacitor when the input signal returns below one-third threshold voltage.

REFERENCES:
patent: 3519849 (1970-07-01), Tyler
patent: 3676783 (1972-07-01), Kinbara et al.
patent: 3862437 (1975-01-01), Rossell
patent: 3989958 (1976-11-01), Renirie et al.
patent: 3989959 (1976-11-01), Renirie et al.
patent: 4200843 (1980-04-01), Egami et al.
J. P. Fouan et al., "A Time Compensation Method for Coincidences Using Large Coaxial Ge(Ll) Detectors", Nuclear Instruments and Methods 62, 1968 pp. 327-329.
B. Gottschalk, "Timing Discriminator Uses Leading-Edge Extrapolation" (SLAC-Pub-2592) Aug. 1980.

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