FR862705A - Improvements relating to devices with asymmetric conductivity, of the selenium type - Google Patents

Improvements relating to devices with asymmetric conductivity, of the selenium type

Info

Publication number
FR862705A
FR862705A FR862705DA FR862705A FR 862705 A FR862705 A FR 862705A FR 862705D A FR862705D A FR 862705DA FR 862705 A FR862705 A FR 862705A
Authority
FR
France
Prior art keywords
devices
improvements relating
selenium type
asymmetric conductivity
asymmetric
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
Application number
Other languages
French (fr)
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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Application granted granted Critical
Publication of FR862705A publication Critical patent/FR862705A/en
Expired legal-status Critical Current

Links

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
    • H01L21/14—Treatment of the complete device, e.g. by electroforming to form a barrier

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)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
FR862705D 1939-01-11 1940-01-05 Improvements relating to devices with asymmetric conductivity, of the selenium type Expired FR862705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB954/39A GB523673A (en) 1939-01-11 1939-01-11 Improvements relating to alternating electric current rectififers of the selenium type

Publications (1)

Publication Number Publication Date
FR862705A true FR862705A (en) 1941-03-13

Family

ID=9713416

Family Applications (1)

Application Number Title Priority Date Filing Date
FR862705D Expired FR862705A (en) 1939-01-11 1940-01-05 Improvements relating to devices with asymmetric conductivity, of the selenium type

Country Status (4)

Country Link
US (1) US2279187A (en)
FR (1) FR862705A (en)
GB (1) GB523673A (en)
NL (1) NL96218C (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL204119A (en) * 1939-01-22
NL215047A (en) * 1941-05-07
US2484204A (en) * 1942-07-25 1949-10-11 Westinghouse Electric Corp Selenium rectifier
BE469234A (en) * 1943-02-15 1900-01-01
DE967323C (en) * 1943-08-06 1957-11-07 Siemens Ag Process for the production of selenium rectifiers, the top electrode of which is thallium added in small quantities
US2437995A (en) * 1943-11-10 1948-03-16 Westinghouse Electric Corp Selenium rectifiers
NL70500C (en) * 1943-12-15 1900-01-01 Westinghouse Electric Corp
BE468183A (en) * 1945-03-12 1900-01-01
US2457186A (en) * 1945-04-09 1948-12-28 Standard Telephones Cables Ltd Method of electroforming rectifier elements
US2481739A (en) * 1946-02-23 1949-09-13 Radio Receptor Company Inc Rectifiers
US2521687A (en) * 1947-07-23 1950-09-12 Standard Telephones Cables Ltd Electroforming apparatus
DE1114251B (en) * 1953-05-23 1961-09-28 Siemens Ag Process for the manufacture of selenium rectifiers
DE976389C (en) * 1954-07-29 1963-08-22 Siemens Ag Process for the electrical formation of dry rectifier plates, in particular selenium rectifier plates
GB769715A (en) * 1954-09-13 1957-03-13 Westinghouse Brake & Signal Improvements relating to the manufacture of dry rectifiers

Also Published As

Publication number Publication date
NL96218C (en)
GB523673A (en) 1940-07-19
US2279187A (en) 1942-04-07

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