GB756506A - Improvements in or relating to methods of manufacturing crystal diodes and transistors - Google Patents

Improvements in or relating to methods of manufacturing crystal diodes and transistors

Info

Publication number
GB756506A
GB756506A GB18139/54A GB1813954A GB756506A GB 756506 A GB756506 A GB 756506A GB 18139/54 A GB18139/54 A GB 18139/54A GB 1813954 A GB1813954 A GB 1813954A GB 756506 A GB756506 A GB 756506A
Authority
GB
United Kingdom
Prior art keywords
transistors
relating
methods
crystal diodes
june
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
GB18139/54A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB756506A publication Critical patent/GB756506A/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
    • H01L21/18—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 elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials

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)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)

Abstract

756,506. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 21, 1954 [June 22, 1953], No. 18139/54. Class 37. A crystal diode 1 or a transistor is connected alternately, by means of relay 6, to a controlled current source 4 which provides an electroforming treatment to modify some characteristic of the diode or transistor, and a device 5 which measures the characteristic. The switching takes place at a frequency sufficient for device 5 to supply a continuous indication.
GB18139/54A 1953-06-22 1954-06-21 Improvements in or relating to methods of manufacturing crystal diodes and transistors Expired GB756506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL756506X 1953-06-22

Publications (1)

Publication Number Publication Date
GB756506A true GB756506A (en) 1956-09-05

Family

ID=19825286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18139/54A Expired GB756506A (en) 1953-06-22 1954-06-21 Improvements in or relating to methods of manufacturing crystal diodes and transistors

Country Status (4)

Country Link
DE (1) DE976063C (en)
FR (1) FR1102769A (en)
GB (1) GB756506A (en)
NL (2) NL84000C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961531A (en) * 1956-07-06 1960-11-22 Sylvania Electric Prod Microwave crystal mixer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR956778A (en) * 1946-07-08 1950-02-07
DE879270C (en) * 1951-10-28 1953-06-11 Licentia Gmbh Method for determining the tip contacts of electrically asymmetrically conductive systems

Also Published As

Publication number Publication date
NL179311B (en)
NL84000C (en)
FR1102769A (en) 1955-10-25
DE976063C (en) 1963-02-07

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