Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1976-10-04
1977-05-10
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307280, 330 30D, H03K 3286
Patent
active
RE0292176
ABSTRACT:
A digital circuit is formed by transistors operable in an unsaturated state. A pair of first transistors are connected in a differential relationship with their emitters commonly connected. A pair of second transistors are also connected in a differential relationship and have their emitters connected in common and their collectors connected respectively to the bases of the first transistors. At least one of the first transistors is connected to the bases of the second transistors to form a feedback loop. First and second current sources are connected to the emitters of the first and second transistors respectively. The state of the circuit is switched by a control signal applied to the bases of one pair of transistors.
REFERENCES:
patent: 3268738 (1966-08-01), Deavenport
patent: 3425000 (1969-01-01), Dann
patent: 3514633 (1970-05-01), Schroeder
patent: 3577015 (1971-05-01), Niemann
patent: 3639785 (1972-02-01), Moriyasu
Heyman John S.
Nippon Electric Company Limited
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