Pulse generator circuit triggerable by nuclear radiation

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307308, 307311, H03K 300

Patent

active

042257972

ABSTRACT:
A pulse generator circuit triggerable by a pulse of nuclear radiation. The pulse generator circuit includes a pair of transistors arranged, together with other electrical components, in the topology of a standard monostable multivibrator circuit. The circuit differs most significantly from a standard monostable multivibrator circuit in that the circuit is adapted to be triggered by a pulse of nuclear radiation rather than electrically and the transistors have substantially different sensitivities to radiation, due to different physical and electrical characteristics and parameters.
One of the transistors is employed principally as a radiation detector and is in a normally non-conducting state and the other transistor is normally in a conducting state. When the circuit is exposed to a pulse of nuclear radiation, currents are induced in the collector-base junctions of both transistors but, due to the different radiation sensitivities of the transistors, the current induced in the collector-base junction of the radiation-detecting transistor is substantially greater than that induced in the collector-base junction of the other transistor. The pulse of radiation causes the radiation-detecting transistor to operate in its conducting state, causing the other transistor to operate in its non-conducting state. As the radiation-detecting transistor operates in its conducting state, an output signal is produced at an output terminal connected to the radiation-detecting transistor indicating the presence of a predetermined intensity of nuclear radiation.

REFERENCES:
patent: 3349252 (1967-10-01), Briley
patent: 3479509 (1969-11-01), Grundy et al.
patent: 3602742 (1971-08-01), Husa
patent: 3715608 (1973-02-01), Glorioso
"Light Sensitive Oscillator" by Huang in IBM Tech. Discl. Bull., vol. 8, No. 4, Sep. 1965.

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