GB1277920A - Improvements in and relating to electronic devices - Google Patents

Improvements in and relating to electronic devices

Info

Publication number
GB1277920A
GB1277920A GB4743169A GB4743169A GB1277920A GB 1277920 A GB1277920 A GB 1277920A GB 4743169 A GB4743169 A GB 4743169A GB 4743169 A GB4743169 A GB 4743169A GB 1277920 A GB1277920 A GB 1277920A
Authority
GB
United Kingdom
Prior art keywords
core
foil
layer
partially enveloping
oxide
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
GB4743169A
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 Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1277920A publication Critical patent/GB1277920A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • H01C7/041—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient formed as one or more layers or coatings

Abstract

1277920 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 Sept 1969 [30 Sept 1968] 47431/69 Heading H1K Grains 11 of an electronically active material are embedded in a foil 13 of insulating material such as a polyurethane in such a way that each grain projects from both surfaces of the foil, each grain consisting of a core 11 of lowresistivity material partly enveloped by a layer 12 of high resistivity material, both the core and partially enveloping layer projecting from the foil. The core may be of aluminium with a partially enveloping layer of aluminium oxide, electrodes 14, 15, 16 of copper being used to contact the oxide on one side and the core on the other side of the foil. Alternatively the core may be of iron oxide wherein some of the iron ions have been replaced by titanium ions, and the partially enveloping insulating layer is formed by oxidizing the core surface, copper again being used as the electrode and contact material. The grains may each include a PN junction, and the complete devices may be used as voltage dependent capacitors, NTC resistors or photoconductive devices.
GB4743169A 1968-09-30 1969-09-26 Improvements in and relating to electronic devices Expired GB1277920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6813992A NL6813992A (en) 1968-09-30 1968-09-30

Publications (1)

Publication Number Publication Date
GB1277920A true GB1277920A (en) 1972-06-14

Family

ID=19804798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4743169A Expired GB1277920A (en) 1968-09-30 1969-09-26 Improvements in and relating to electronic devices

Country Status (8)

Country Link
JP (1) JPS5435665B1 (en)
BE (1) BE739555A (en)
BR (1) BR6912831D0 (en)
CH (1) CH519772A (en)
ES (1) ES371972A1 (en)
FR (1) FR2019173A1 (en)
GB (1) GB1277920A (en)
NL (1) NL6813992A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10074466B2 (en) 2014-02-18 2018-09-11 Epcos Ag NTC component and method for the production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10074466B2 (en) 2014-02-18 2018-09-11 Epcos Ag NTC component and method for the production thereof

Also Published As

Publication number Publication date
BE739555A (en) 1970-03-31
DE1945084B2 (en) 1976-08-05
FR2019173A1 (en) 1970-06-26
DE1945084A1 (en) 1970-04-09
ES371972A1 (en) 1972-03-16
CH519772A (en) 1972-02-29
JPS5435665B1 (en) 1979-11-05
BR6912831D0 (en) 1973-01-11
NL6813992A (en) 1970-04-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee