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GB532961A - Improvements relating to the manufacture of alternating electric current dry rectifiers - Google Patents

Improvements relating to the manufacture of alternating electric current dry rectifiers

Info

Publication number
GB532961A
GB532961A GB22590/39A GB2259039A GB532961A GB 532961 A GB532961 A GB 532961A GB 22590/39 A GB22590/39 A GB 22590/39A GB 2259039 A GB2259039 A GB 2259039A GB 532961 A GB532961 A GB 532961A
Authority
GB
United Kingdom
Prior art keywords
manufacture
selenium
electric current
alternating electric
improvements relating
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
GB22590/39A
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Publication of GB532961A publication Critical patent/GB532961A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D48/00—Individual devices not covered by groups H10D1/00 - H10D44/00
    • H10D48/01—Manufacture or treatment
    • H10D48/04—Manufacture or treatment of devices having bodies comprising selenium or tellurium in uncombined form
    • H10D48/043—Preliminary treatment of the selenium or tellurium, its application to foundation plates or the subsequent treatment of the combination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/10—Shape or structure of solid propellant charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D48/00—Individual devices not covered by groups H10D1/00 - H10D44/00
    • H10D48/01—Manufacture or treatment
    • H10D48/04—Manufacture or treatment of devices having bodies comprising selenium or tellurium in uncombined form
    • H10D48/043—Preliminary treatment of the selenium or tellurium, its application to foundation plates or the subsequent treatment of the combination
    • H10D48/045—Treatment of the surface of the selenium or tellurium layer after having been made conductive

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

532,961. Asymmetrically-conducting resistances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Aug. 3, 1939, No. 22590 Convention date, Sept. 21, 1938. [Class 37] A selenium-coated element of a rectifier is subjected to a bath of an alkaline reaction, in the course of manufacture, to improve the characteristics. The selenium may have added selenium oxide, or small quantities of oxides or oxy-halogen compounds of sulphur or selenium.
GB22590/39A 1938-09-21 1939-08-03 Improvements relating to the manufacture of alternating electric current dry rectifiers Expired GB532961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR532961T 1938-09-21

Publications (1)

Publication Number Publication Date
GB532961A true GB532961A (en) 1941-02-04

Family

ID=8924756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22590/39A Expired GB532961A (en) 1938-09-21 1939-08-03 Improvements relating to the manufacture of alternating electric current dry rectifiers

Country Status (4)

Country Link
US (1) US2227827A (en)
DE (1) DE856664C (en)
FR (1) FR851651A (en)
GB (1) GB532961A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447630A (en) * 1943-11-10 1948-08-24 Westinghouse Electric Corp Method of making selenium rectifiers
NL70500C (en) * 1943-12-15 1900-01-01 Westinghouse Electric Corp
US2493241A (en) * 1944-11-11 1950-01-03 Fansteel Metallurgical Corp Dry plate selenium rectifier
US2422192A (en) * 1944-11-11 1947-06-17 Selenium rectifier disc
US2446467A (en) * 1944-11-11 1948-08-03 Fansteel Metallurgical Corp Dry plate rectifier
US2446237A (en) * 1944-11-11 1948-08-03 Fansteel Metallurgical Corp Selenium rectifier
US2450886A (en) * 1944-11-20 1948-10-12 Standard Telephones Cables Ltd Semiconductor
BE461942A (en) * 1944-11-20
BE476268A (en) * 1945-05-12
US2554237A (en) * 1945-10-29 1951-05-22 Westinghouse Electric Corp Rectifier
US2507782A (en) * 1946-02-23 1950-05-16 Radio Receptor Company Inc Rectifiers
US2766210A (en) * 1949-05-06 1956-10-09 Sylvania Electric Prod Manufacture of selenium elements
US2659846A (en) * 1951-05-15 1953-11-17 Int Rectifier Corp Selenium element and method of making it
NL93089C (en) * 1953-02-03
US3127545A (en) * 1960-12-23 1964-03-31 Gen Telephone & Elect Rectifier
US3226610A (en) * 1962-03-01 1965-12-28 Jr George G Harman Constant-current semiconductor device
KR20050042819A (en) * 2002-09-13 2005-05-10 오큘라 사이언시즈, 인크. Devices and methods for improving vision
WO2006020859A2 (en) * 2004-08-13 2006-02-23 Ottawa Health Research Institute Vision enhancing ophthalmic devices and related methods and compositions
US7802592B2 (en) 2006-04-18 2010-09-28 Fisher Controls International, Llc Fluid pressure reduction devices

Also Published As

Publication number Publication date
US2227827A (en) 1941-01-07
DE856664C (en) 1952-11-24
FR851651A (en) 1940-01-12

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