Superconductive sensing circuit for providing improved signal-to-noise
Patent
·
OSTI ID:5310784
A superconductive sensing circuit having improved signal-to-noise ratio is provided for use with logic circuits using logic switching devices. The sensing circuit includes a first and second branch in parallel wherein the first branch includes a Josephson switching device. The first branch also includes a first inductance and the second branch includes an inductance greater than or equal to the first inductance. The Josephson device in the first branch of the sensing circuit is biased to switch into its finite voltage state so that the gate current from the logic circuit is directed to the second sensing branch. The Josephson device in the first branch automatically resets to its no voltage state so that subsequent input current is divided between the two branches inversely proportional to the inductances therein. This subsequent current in the first branch of the sensing circuit is sensed and is indicative of the switching of one or more of the logic devices in the logic circuit.
- Assignee:
- International Business Machines Corp.
- Patent Number(s):
- US 3987309
- OSTI ID:
- 5310784
- Country of Publication:
- United States
- Language:
- English
Similar Records
Superconductive logic circuit utilizing Josephson tunnelling devices
Superconductive circuit level converter
Power converter using near-load output capacitance, direct inductor contact, and/or remote current sense
Patent
·
Tue Sep 09 00:00:00 EDT 1975
·
OSTI ID:5310667
Superconductive circuit level converter
Patent
·
Mon Mar 08 23:00:00 EST 1976
·
OSTI ID:5377382
Power converter using near-load output capacitance, direct inductor contact, and/or remote current sense
Patent
·
Mon Nov 27 23:00:00 EST 2017
·
OSTI ID:1410510