JPS5720031A - Or circuit using josephson element - Google Patents

Or circuit using josephson element

Info

Publication number
JPS5720031A
JPS5720031A JP9459380A JP9459380A JPS5720031A JP S5720031 A JPS5720031 A JP S5720031A JP 9459380 A JP9459380 A JP 9459380A JP 9459380 A JP9459380 A JP 9459380A JP S5720031 A JPS5720031 A JP S5720031A
Authority
JP
Japan
Prior art keywords
current
junction
flows
junctions
currents
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9459380A
Other languages
Japanese (ja)
Other versions
JPS6123B2 (en
Inventor
Hideo Suzuki
Shinya Hasuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9459380A priority Critical patent/JPS5720031A/en
Priority to EP81300724A priority patent/EP0035350B1/en
Priority to US06/236,579 priority patent/US4423430A/en
Priority to DE8181300724T priority patent/DE3161996D1/en
Publication of JPS5720031A publication Critical patent/JPS5720031A/en
Publication of JPS6123B2 publication Critical patent/JPS6123B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/195—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using superconductive devices
    • H03K19/1952—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using superconductive devices with electro-magnetic coupling of the control current

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To obtain a multi-input OR circuit which has equal input sensitivity among input terminals and outputs a large current, by forming Josephson junctions at more than one point and by performing OR operation at each junction. CONSTITUTION:Josephson junctions J1 and J2 are connected in series to resistances r1 and r2, and the series circuits are connected mutually in parallel and supplied with a bias current IB. If r1=r2, the bias currents IB1 and IB2 of the junctions are equal to each other and when input signal currents IH1 and IH2 are zero, those bias currents are set a little bit less than the critical current values of the Josephson joints, so that when the currents IH1 and IH2 are both zero, almost all of the current IB flows through the junctions J1 and J2. Then, flowing the current IH1 develops a voltage at the junction J1. Consequently, almost all of the bias current flowing through the junction J1 flows through the junction J2. As a result, a voltage is developed at the junction J2 as well. Therefore, almost all of the current IB flows out from an output terminal Out. When the current IH2 flows, and when IH1 and IH2 flow, the operation is the same, and thus this circuit performs OR operation.
JP9459380A 1980-02-20 1980-07-11 Or circuit using josephson element Granted JPS5720031A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP9459380A JPS5720031A (en) 1980-07-11 1980-07-11 Or circuit using josephson element
EP81300724A EP0035350B1 (en) 1980-02-20 1981-02-20 Superconductive logic device incorporating a josephson junction
US06/236,579 US4423430A (en) 1980-02-20 1981-02-20 Superconductive logic device
DE8181300724T DE3161996D1 (en) 1980-02-20 1981-02-20 Superconductive logic device incorporating a josephson junction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9459380A JPS5720031A (en) 1980-07-11 1980-07-11 Or circuit using josephson element

Publications (2)

Publication Number Publication Date
JPS5720031A true JPS5720031A (en) 1982-02-02
JPS6123B2 JPS6123B2 (en) 1986-01-06

Family

ID=14114570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9459380A Granted JPS5720031A (en) 1980-02-20 1980-07-11 Or circuit using josephson element

Country Status (1)

Country Link
JP (1) JPS5720031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233242A (en) * 1991-08-14 1993-08-03 Westinghouse Electric Corp. Superconducting push-pull flux quantum gate array cells

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233242A (en) * 1991-08-14 1993-08-03 Westinghouse Electric Corp. Superconducting push-pull flux quantum gate array cells

Also Published As

Publication number Publication date
JPS6123B2 (en) 1986-01-06

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