JPS6453584A - Analog/digital converter - Google Patents
Analog/digital converterInfo
- Publication number
- JPS6453584A JPS6453584A JP62210708A JP21070887A JPS6453584A JP S6453584 A JPS6453584 A JP S6453584A JP 62210708 A JP62210708 A JP 62210708A JP 21070887 A JP21070887 A JP 21070887A JP S6453584 A JPS6453584 A JP S6453584A
- Authority
- JP
- Japan
- Prior art keywords
- current
- superconducting
- junction
- converting part
- conditions
- 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
Links
Landscapes
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To realize a very high speed operation with a simple construction by a method wherein a converting part composed of a plurality of superconducting current paths which are connected in series and whose respective critical current conditions are so predetermined as to be different from each other with a certain difference and a means to detect the cut-off of a superconducting current are provided and the change of the current which is applied to the converting part and to which an analog signal is superposed is outputted. CONSTITUTION:A converting part is composed of superconducting members S1, S2...Si...Sn+1 which are piled and whose sectional areas are varied step by step. Thin insulating layers are provided in junction parts between the respective superconducting members and Josephson junctions J1, J2...Jn whose respective critical currents are different from each other are formed. Terminals P2, P3...Pn for voltage detection are connected to the respective superconducting members S2, S3...Si...Sn. A predetermined current I0 which is smaller than the critical current of the Josephson junction J1 which has the minimum critical current condition is applied. When the input current is increased by the superposition of an analog signal the superconducting conditions of a certain junction Ji and of junctions which have lower critical current conditions than the junction Ji are broken and electric resistances are produced. Thus, a voltage corresponding to the change of an environmental magnetic field is inputted to an encoder to obtain a digital binary signal.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62210708A JPH0624259B2 (en) | 1987-08-25 | 1987-08-25 | Analog / digital converter |
| KR1019880010421A KR920003885B1 (en) | 1987-08-25 | 1988-08-17 | Analog to digital converter |
| EP19880113795 EP0304894A3 (en) | 1987-08-25 | 1988-08-24 | Analog-to-digital converter using superconducting material |
| US07/235,940 US4963871A (en) | 1987-08-25 | 1988-08-24 | Analog-to-digital converter using superconducting material |
| CA000575603A CA1336788C (en) | 1987-08-25 | 1988-08-24 | Analog-to-digital converter using superconducting material |
| AU21541/88A AU598695B2 (en) | 1987-08-25 | 1988-08-25 | Analog-to-digital converter using superconducting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62210708A JPH0624259B2 (en) | 1987-08-25 | 1987-08-25 | Analog / digital converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6453584A true JPS6453584A (en) | 1989-03-01 |
| JPH0624259B2 JPH0624259B2 (en) | 1994-03-30 |
Family
ID=16593786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62210708A Expired - Lifetime JPH0624259B2 (en) | 1987-08-25 | 1987-08-25 | Analog / digital converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624259B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5347143A (en) * | 1991-05-17 | 1994-09-13 | Dornier Luftfahrt Gmbh | Tunnelling barrier between two non-tunnelling superconductor-insulator-controlling superconductor-insulator-superconductor structures |
| KR100724098B1 (en) * | 2006-05-10 | 2007-06-04 | 한국표준과학연구원 | A analogue-digital converter using josephson dac and method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127668A (en) * | 1978-03-28 | 1979-10-03 | Fujitsu Ltd | Analog-digital converter using josephson element |
| JPS62165378A (en) * | 1986-01-14 | 1987-07-21 | Nec Corp | Josephson junction device composed of laminated junctions with different current densities |
| JPS63289973A (en) * | 1987-05-22 | 1988-11-28 | Sumitomo Metal Mining Co Ltd | Superconducting molded object of metal oxide |
-
1987
- 1987-08-25 JP JP62210708A patent/JPH0624259B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127668A (en) * | 1978-03-28 | 1979-10-03 | Fujitsu Ltd | Analog-digital converter using josephson element |
| JPS62165378A (en) * | 1986-01-14 | 1987-07-21 | Nec Corp | Josephson junction device composed of laminated junctions with different current densities |
| JPS63289973A (en) * | 1987-05-22 | 1988-11-28 | Sumitomo Metal Mining Co Ltd | Superconducting molded object of metal oxide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5347143A (en) * | 1991-05-17 | 1994-09-13 | Dornier Luftfahrt Gmbh | Tunnelling barrier between two non-tunnelling superconductor-insulator-controlling superconductor-insulator-superconductor structures |
| KR100724098B1 (en) * | 2006-05-10 | 2007-06-04 | 한국표준과학연구원 | A analogue-digital converter using josephson dac and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624259B2 (en) | 1994-03-30 |
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