US2378513A - Alternating current rectifier of the selenium type - Google Patents
Alternating current rectifier of the selenium type Download PDFInfo
- Publication number
- US2378513A US2378513A US47173843A US2378513A US 2378513 A US2378513 A US 2378513A US 47173843 A US47173843 A US 47173843A US 2378513 A US2378513 A US 2378513A
- Authority
- US
- United States
- Prior art keywords
- alternating current
- selenium
- current rectifier
- selenium type
- rectifier
- 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 - Lifetime
Links
- 229910052711 selenium Inorganic materials 0.000 title description 9
- 239000011669 selenium Substances 0.000 title description 9
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910052787 antimony Inorganic materials 0.000 description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 description 2
- 125000003748 selenium group Chemical group *[Se]* 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- -1 halogen salt Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- This invention relates to the manufacture of alternating current rectiiiers of the selenium type comprising a base or support provided with adirection and the so-called "bottom bend" characteristic, that is to say, the applied voltage in the forward direction at which eflective rectification takes place, the eiliciency of the rectifier in eommercialservice being dependent upon these characteristics. all of which vary within considerable limits in accordance with the-particular composition of the selenium mixture employed,
- the resistance in the forward direction is favourably airected by the introduction oi relatively small quantities oi certain other substances into the selenium mixture and according to the present invention a relatively small amount of antimony is added to the selenium mixture described in United States Patent No. 2,307,474 for the purpose of reducing the iorward resistance of the rectifier.
- the amount of added antimony for this purpose is found to be somewhat critical and is preferably of the order of 0.04%.
- An alternating current rectifier comprising a base or support provided with a layer containing selenium, selenium dioxide. a halogen salt and approximately 0.04% of antimony.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Description
new June 19, 1945 v UNITED STATES PATENT orrics ALTERNATING CURRENT RECTIFIER 01" THE SELENIUM TYPE Leslie Ernest Thompson and Alexander Jenkins. London N. 1, England, assignors, by memo assignments, to f The Union Switch and Signal Company, Swissvale, Pa., a corporation of Pennsylvania No Drawing. Application January 8, 1048, Serial No. 471,738. In Great Britain January 21, I!
1 Claim. (Cl. 175-486) This invention relates to the manufacture of alternating current rectiiiers of the selenium type comprising a base or support provided with adirection and the so-called "bottom bend" characteristic, that is to say, the applied voltage in the forward direction at which eflective rectification takes place, the eiliciency of the rectifier in eommercialservice being dependent upon these characteristics. all of which vary within considerable limits in accordance with the-particular composition of the selenium mixture employed,
a the eventual resistance of the rectifier in thereverse direction being also determined by an electric forming process described for example in U. S. PatentNo. 2,270,187.
It is foimd-in practice that the resistance in the forward direction is favourably airected by the introduction oi relatively small quantities oi certain other substances into the selenium mixture and according to the present invention a relatively small amount of antimony is added to the selenium mixture described in United States Patent No. 2,307,474 for the purpose of reducing the iorward resistance of the rectifier.
The amount of added antimony for this purpose is found to be somewhat critical and is preferably of the order of 0.04%.
In a selenium composition prepared as de- 4 scribed for example in United BtatesjPatent No.
' proximately 22%.
2,307,474 the addition of 0.04% of antimony is round to reduce the forward resistance by ap- The improved process .of the invention is however not limited strictly to the valu'e given above by way of example which may be varied in accordance with the particular composition of the selenium mixture employed.
Having now described our inventiomfwhat we claim as new and desire to secure by Letters Patent is:
An alternating current rectifier comprising a base or support provided with a layer containing selenium, selenium dioxide. a halogen salt and approximately 0.04% of antimony.
LESLIE ERNEST THOMPSON. ALEXANDER JENKINS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB87242A GB554894A (en) | 1942-01-21 | 1942-01-21 | Improvements relating to the manufacture of alternating current rectifiers of the selenium type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2378513A true US2378513A (en) | 1945-06-19 |
Family
ID=9711963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US47173843 Expired - Lifetime US2378513A (en) | 1942-01-21 | 1943-01-08 | Alternating current rectifier of the selenium type |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2378513A (en) |
| FR (1) | FR932625A (en) |
| GB (1) | GB554894A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2568780A (en) * | 1947-03-01 | 1951-09-25 | Standard Telephones Cables Ltd | Rectifier manufacturing process and products obtained thereby |
| US2784358A (en) * | 1945-12-29 | 1957-03-05 | Bell Telephone Labor Inc | Rectifier and method of making it |
| US2858239A (en) * | 1956-03-13 | 1958-10-28 | Siemens Ag | Method for producing selenium rectifiers |
| US3303344A (en) * | 1963-07-16 | 1967-02-07 | Westinghouse Electric Corp | Photoconductive target electrode for a pickup tube and its method of fabrication |
-
1942
- 1942-01-21 GB GB87242A patent/GB554894A/en not_active Expired
-
1943
- 1943-01-08 US US47173843 patent/US2378513A/en not_active Expired - Lifetime
-
1946
- 1946-08-23 FR FR932625D patent/FR932625A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2784358A (en) * | 1945-12-29 | 1957-03-05 | Bell Telephone Labor Inc | Rectifier and method of making it |
| US2568780A (en) * | 1947-03-01 | 1951-09-25 | Standard Telephones Cables Ltd | Rectifier manufacturing process and products obtained thereby |
| US2858239A (en) * | 1956-03-13 | 1958-10-28 | Siemens Ag | Method for producing selenium rectifiers |
| US3303344A (en) * | 1963-07-16 | 1967-02-07 | Westinghouse Electric Corp | Photoconductive target electrode for a pickup tube and its method of fabrication |
Also Published As
| Publication number | Publication date |
|---|---|
| GB554894A (en) | 1943-07-23 |
| FR932625A (en) | 1948-03-26 |
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