GB602699A - Improvements in or relating to electric dry rectifiers - Google Patents

Improvements in or relating to electric dry rectifiers

Info

Publication number
GB602699A
GB602699A GB2999545A GB2999545A GB602699A GB 602699 A GB602699 A GB 602699A GB 2999545 A GB2999545 A GB 2999545A GB 2999545 A GB2999545 A GB 2999545A GB 602699 A GB602699 A GB 602699A
Authority
GB
United Kingdom
Prior art keywords
mask
pin
source
forming
insulated
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
GB2999545A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE469517D priority Critical patent/BE469517A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2999545A priority patent/GB602699A/en
Priority to FR939409D priority patent/FR939409A/en
Publication of GB602699A publication Critical patent/GB602699A/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)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

602,699. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd., and SEARLE, A. M. Nov. 9, 1945, No. 29995. [Class 37] In a method of electro-forming an electric rectifier element, an external source of potential directly connected across the element causes electro-forming during the application of the counter-electrode. In the example a D.C. source 8 may be connected to the base plate 2 of the element and to a mushroom-headed pin 4 insulated from the base plate 2 and selenium layer 3 by an insulating lining 7. The counter electrode metal or alloy is applied through a spray gun nozzle 1, first on to the pin 4 and then gradually outwards so that a forming current passes through the layer 3, the whole element being completely formed as soon as the spraying is completed. The edges of the element are kept free from the spray by placing the element in an annular mask 5 insulated by a lining 6. If desired, the source 8 may be connected to the mask 5 instead of the pin 4, in which case the nozzle is initially directed at the mask.
GB2999545A 1945-11-09 1945-11-09 Improvements in or relating to electric dry rectifiers Expired GB602699A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE469517D BE469517A (en) 1945-11-09
GB2999545A GB602699A (en) 1945-11-09 1945-11-09 Improvements in or relating to electric dry rectifiers
FR939409D FR939409A (en) 1945-11-09 1946-11-07 Improvements to electric current rectifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2999545A GB602699A (en) 1945-11-09 1945-11-09 Improvements in or relating to electric dry rectifiers

Publications (1)

Publication Number Publication Date
GB602699A true GB602699A (en) 1948-06-01

Family

ID=10300541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2999545A Expired GB602699A (en) 1945-11-09 1945-11-09 Improvements in or relating to electric dry rectifiers

Country Status (3)

Country Link
BE (1) BE469517A (en)
FR (1) FR939409A (en)
GB (1) GB602699A (en)

Also Published As

Publication number Publication date
BE469517A (en)
FR939409A (en) 1948-11-15

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