GB862178A - Improvements in apparatus for controlling electric currents - Google Patents
Improvements in apparatus for controlling electric currentsInfo
- Publication number
- GB862178A GB862178A GB37471/57A GB3747157A GB862178A GB 862178 A GB862178 A GB 862178A GB 37471/57 A GB37471/57 A GB 37471/57A GB 3747157 A GB3747157 A GB 3747157A GB 862178 A GB862178 A GB 862178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- control
- magnetic field
- superconducting
- current
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 abstract 4
- 239000004020 conductor Substances 0.000 abstract 3
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000978 Pb alloy Inorganic materials 0.000 abstract 1
- 229910001128 Sn alloy Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 229910052734 helium Inorganic materials 0.000 abstract 1
- 239000001307 helium Substances 0.000 abstract 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000010955 niobium Substances 0.000 abstract 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000002887 superconductor Substances 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 0.000 abstract 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/44—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using super-conductive elements, e.g. cryotron
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/92—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of superconductive devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/30—Devices switchable between superconducting and normal states
- H10N60/35—Cryotrons
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/30—Devices switchable between superconducting and normal states
- H10N60/35—Cryotrons
- H10N60/355—Power cryotrons
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
862,178. Superconductive relays. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 2, 1957 [Nov. 30, 1956], No. 37471/57. Class 40 (9). [Also in Group XXXVI] Apparatus for controlling electric current comprises a super-conducting element through which the current is passed, means to apply a control magnetic field to the superconductor, and screening means to restrict the magnetic field. Fig. 2 shows a gating device in which the controlled current is passed between terminals 28 and 30 through a layer 26 of material such as tantalum (if desired with an addition of high resistance material), or an alloy of tin and lead which may be rendered superconducting. A control coil 32 of wire or a spirally cut coating of niobium, lead or other " hard " superconducting material (i.e. having a high value critical magnetic field) surrounds layer 26, the control current through this coil being variable to provide a magnetic field strength above and below the critical value of layer 26 to switch this layer between its normal and superconducting conditions. A layer of insulation 24 separates layer 26 from a layer 22 which is also of " hard " superconducting material and in its superconducting state acts as a screen to reduce the volume of the magnetic field. The whole is maintained between 2 and 5 K., for example by use of liquid helium. In operation, coil 32 and layer 22 remain in the superconducting state. Layer 22 may be self-supporting, or a hollow or solid core 20 of copper, tungsten or insulating material may be provided. Fig. 3 shows a modification in which a similar structure is in flat form instead of cylindrical, the control current being passed through strip 48 which is magnetically coupled to the switched conductor strip 44. In a further modification, the control strip 48 is formed so as to cross strip 44 at a plurality of points to increase the magnetic coupling. The switched conductor may be formed with longitudinal apertures to increase its normal resistance. The arrangement provides a device for control switching or storage purposes with a small time constant and providing current gain. A bi-stable circuit may be provided by interconnecting the control and switched conductor elements of two such devices.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US625512A US3339165A (en) | 1956-11-30 | 1956-11-30 | Magnetic switching device |
| US809815A US2966647A (en) | 1959-04-29 | 1959-04-29 | Shielded superconductor circuits |
| US824120A US3059196A (en) | 1959-06-30 | 1959-06-30 | Bifilar thin film superconductor circuits |
| US140119A US3086130A (en) | 1961-09-22 | 1961-09-22 | Cryogenic coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB862178A true GB862178A (en) | 1961-03-01 |
Family
ID=27495412
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37471/57A Expired GB862178A (en) | 1956-11-30 | 1957-12-02 | Improvements in apparatus for controlling electric currents |
| GB15183/60A Expired GB935208A (en) | 1956-11-30 | 1960-04-29 | Improvements in and relating to superconductive circuit elements |
| GB22389/60A Expired GB935209A (en) | 1956-11-30 | 1960-06-27 | Thin film superconductor circuits |
| GB40817/61A Expired GB995140A (en) | 1956-11-30 | 1961-11-15 | Cryotron |
| GB34720/62A Expired GB990297A (en) | 1956-11-30 | 1962-09-11 | A superconductive circuit component |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15183/60A Expired GB935208A (en) | 1956-11-30 | 1960-04-29 | Improvements in and relating to superconductive circuit elements |
| GB22389/60A Expired GB935209A (en) | 1956-11-30 | 1960-06-27 | Thin film superconductor circuits |
| GB40817/61A Expired GB995140A (en) | 1956-11-30 | 1961-11-15 | Cryotron |
| GB34720/62A Expired GB990297A (en) | 1956-11-30 | 1962-09-11 | A superconductive circuit component |
Country Status (4)
| Country | Link |
|---|---|
| DE (4) | DE1049960B (en) |
| FR (1) | FR1194454A (en) |
| GB (5) | GB862178A (en) |
| NL (1) | NL251185A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2339985A (en) * | 1998-07-17 | 2000-02-09 | Seiko Instr Inc | Radiation detecting device including a superconductor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL258325A (en) * | 1959-11-24 | 1964-04-27 | ||
| US3310767A (en) * | 1963-05-29 | 1967-03-21 | Gen Electric | Power cryotron |
| GB1053476A (en) * | 1963-10-09 |
-
0
- NL NL251185D patent/NL251185A/xx unknown
-
1957
- 1957-11-28 FR FR1194454D patent/FR1194454A/en not_active Expired
- 1957-11-30 DE DEI14047A patent/DE1049960B/en active Pending
- 1957-12-02 GB GB37471/57A patent/GB862178A/en not_active Expired
-
1960
- 1960-04-28 DE DEJ18036A patent/DE1120502B/en active Pending
- 1960-04-29 GB GB15183/60A patent/GB935208A/en not_active Expired
- 1960-06-27 GB GB22389/60A patent/GB935209A/en not_active Expired
- 1960-06-29 DE DEJ18369A patent/DE1144335B/en active Pending
-
1961
- 1961-11-15 GB GB40817/61A patent/GB995140A/en not_active Expired
-
1962
- 1962-09-11 GB GB34720/62A patent/GB990297A/en not_active Expired
- 1962-09-21 DE DEJ22413A patent/DE1162406B/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2339985A (en) * | 1998-07-17 | 2000-02-09 | Seiko Instr Inc | Radiation detecting device including a superconductor |
| US6281497B1 (en) | 1998-07-17 | 2001-08-28 | Seiko Instruments Inc. | Radioactive ray detecting device |
| GB2339985B (en) * | 1998-07-17 | 2002-01-16 | Seiko Instr Inc | Radiation detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1162406B (en) | 1964-02-06 |
| GB935209A (en) | 1963-08-28 |
| DE1144335B (en) | 1963-02-28 |
| FR1194454A (en) | 1959-11-10 |
| NL251185A (en) | |
| GB990297A (en) | 1965-04-28 |
| DE1120502B (en) | 1961-12-28 |
| GB935208A (en) | 1963-08-28 |
| GB995140A (en) | 1965-06-16 |
| DE1049960B (en) | 1959-02-05 |
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