Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1978-06-30
1980-07-01
Edlow, Martin H.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307306, 365162, H01L 3922
Patent
active
042109213
ABSTRACT:
A polarity switch which utilizes Josephson interferometers and low drive currents is disclosed. Single ended and double ended polarity switches which are electrically the same include a pair of circuits interconnected so that the application of a pair of signals to the circuits applies a current of one polarity or the other to a utilization circuit connected to the pair of circuits. Each of the pair of circuits includes a Josephson device which carries gate current; a current path shunting the device having a transformer secondary disposed serially in the path and another Josephson device serially disposed in the same current path. The transformer secondary is coupled to a primary through which a current is passed at the outset of the memory cycle. A current is induced in the current path of one of the pair of circuits which is in opposition to the gate current flowing in the Josephson device carrying that current. The induced current and the gate current effectively cancel one another resulting in a total current of zero flowing in the Josephson device. Then, a decoder output control line which is disposed in electromagnetically coupled relationship with both of the Josephson devices of the other of the pair of circuit switches them to the voltage state causing current to be diverted into an interconnection line which is connected to the utilization circuit.
REFERENCES:
patent: 3758795 (1973-09-01), Anacher
patent: 3913120 (1975-10-01), Lohiri
patent: 3978351 (1976-08-01), Zappe
patent: 4151605 (1979-04-01), Faria
Kotyczka et al., I.B.M. Tech. Discl. Bull., vol. 18, No. 12, May 1976, p. 4166.
Zappe, I.B.M. Tech. Discl. Bull., vol. 19, No. 11, Apr. 1977, p. 4467.
Edlow Martin H.
International Business Machines - Corporation
Kilgannon, Jr. Thomas J.
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