GB633275A - High voltage selenium rectifiers and manufacturing process - Google Patents
High voltage selenium rectifiers and manufacturing processInfo
- Publication number
- GB633275A GB633275A GB4264/48A GB426448A GB633275A GB 633275 A GB633275 A GB 633275A GB 4264/48 A GB4264/48 A GB 4264/48A GB 426448 A GB426448 A GB 426448A GB 633275 A GB633275 A GB 633275A
- Authority
- GB
- United Kingdom
- Prior art keywords
- selenium
- rectifiers
- high voltage
- manufacturing process
- formol
- 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
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052711 selenium Inorganic materials 0.000 title abstract 3
- 239000011669 selenium Substances 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 2
- 150000001299 aldehydes Chemical class 0.000 abstract 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 abstract 2
- 229960004279 formaldehyde Drugs 0.000 abstract 2
- 235000019256 formaldehyde Nutrition 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 abstract 1
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
- H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
- H01L21/108—Provision of discrete insulating layers, i.e. non-genetic barrier layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
- H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
- H01L21/105—Treatment of the surface of the selenium or tellurium layer after having been made conductive
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Biotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
633,275. Dry and contact rectifiers. STANDARD TELEPHONES & CABLES, Ltd. Feb. 13, 1948, No. 4264. Convention date, Feb. 15, 1947. [Class 37] In a process for manufacturing selenium rectifiers the surface of the selenium is exposed to the vapour of an aldehyde after heat treatment, and before application of the counter electrode. For example, a solution of formol at 30 per cent, heated to 40 C. may be employed, a treatment of about 1 to 10 seconds being satisfactory. It is stated that rectifier elements made according to the process will withstand an A.C. up to 30 volts r.m.s. without overheating. The following aldehydes may be used : formol, acetaldehyde, benzaldehyde, furfurol, cinnamic either polymerized or not.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR56725T | 1947-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB633275A true GB633275A (en) | 1949-12-12 |
Family
ID=8690884
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4264/48A Expired GB633275A (en) | 1947-02-28 | 1948-02-13 | High voltage selenium rectifiers and manufacturing process |
| GB5010/48A Expired GB646852A (en) | 1947-02-28 | 1948-02-20 | High voltage selenium rectifiers and manufacturing process |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5010/48A Expired GB646852A (en) | 1947-02-28 | 1948-02-20 | High voltage selenium rectifiers and manufacturing process |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2476989A (en) |
| BE (1) | BE480308A (en) |
| CH (1) | CH279753A (en) |
| FR (2) | FR941801A (en) |
| GB (2) | GB633275A (en) |
| NL (2) | NL138545B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2686279A (en) * | 1949-09-28 | 1954-08-10 | Rca Corp | Semiconductor device |
| US2711005A (en) * | 1949-09-30 | 1955-06-21 | Vickers Inc | Power transmission |
| US2873414A (en) * | 1955-06-16 | 1959-02-10 | Sarkes Tarzian | Selenium rectifier |
| US2974262A (en) * | 1957-06-11 | 1961-03-07 | Abraham George | Solid state device and method of making same |
-
0
- NL NL75136D patent/NL75136C/xx active
- NL NL138545D patent/NL138545B/xx unknown
- BE BE480308D patent/BE480308A/xx unknown
-
1947
- 1947-02-15 FR FR941801D patent/FR941801A/en not_active Expired
- 1947-02-28 FR FR56725D patent/FR56725E/en not_active Expired
-
1948
- 1948-02-12 CH CH279753D patent/CH279753A/en unknown
- 1948-02-12 US US8019A patent/US2476989A/en not_active Expired - Lifetime
- 1948-02-13 GB GB4264/48A patent/GB633275A/en not_active Expired
- 1948-02-20 GB GB5010/48A patent/GB646852A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB646852A (en) | 1950-11-29 |
| FR941801A (en) | 1949-01-21 |
| CH279753A (en) | 1951-12-15 |
| BE480308A (en) | |
| NL138545B (en) | |
| NL75136C (en) | |
| FR56725E (en) | 1952-10-03 |
| US2476989A (en) | 1949-07-26 |
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