Nuclear reactor fail-safe unit having the function of control re

Details Nuclear reactor fail-safe unit having the function of control re Nuclear reactor fail-safe unit having the function of control re

1975-12-03

1977-10-18

Pendegrass, Verlin R.

176 19EC, 176 24, 328 71, 328148, G21C 700, H03K 1702, H03K 520

Patent

active

040544869

ABSTRACT:
An electronic unit for controlling the safety absorbers of a nuclear reactor comprises a self-supplied AND.sub.1 circuit for performing logical multiplication of input signals each capable of assuming one out of two values, series-connected modules each constituted by a dc/ac converter, the output of the last module being coupled to the first converter and to a regulator input at which is obtained a logical a.c. signal whose value corresponds to the result of multiplication of the different input signals, a static intensity regulator with negative current feedback for modulating the width of the square waves delivered by an isolation transformer, a rectifier for delivering a constant current to a load impedance.

REFERENCES:
patent: 3178635 (1965-04-01), Runyan
patent: 3191115 (1965-06-01), Lloyd
patent: 3425903 (1969-02-01), Bevilacqua
patent: 3657660 (1972-04-01), Pfersch
patent: 3888772 (1975-06-01), Neuner
patent: 3931522 (1976-01-01), Rusch
patent: 3940309 (1976-02-01), Imperiali
Su, "Logic Design & Its Recent Development", Computer Design, Sept. 1973, pp. 65-70.

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