GB545679A - Resistance composition and method of making it - Google Patents

Resistance composition and method of making it

Info

Publication number
GB545679A
GB545679A GB349041A GB349041A GB545679A GB 545679 A GB545679 A GB 545679A GB 349041 A GB349041 A GB 349041A GB 349041 A GB349041 A GB 349041A GB 545679 A GB545679 A GB 545679A
Authority
GB
United Kingdom
Prior art keywords
manganese
copper
nickel
mixture
making
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
GB349041A
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 claimed from US280692A external-priority patent/US2274592A/en
Priority claimed from US336734A external-priority patent/US2282944A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB545679A publication Critical patent/GB545679A/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
    • 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
    • H01C7/042—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 mainly consisting of inorganic non-metallic substances
    • H01C7/043—Oxides or oxidic compounds

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Resistance Heating (AREA)
  • Conductive Materials (AREA)
  • Thermistors And Varistors (AREA)

Abstract

545,679. Electric resistances. STANDARD TELEPHONES & CABLES, Ltd. March 14, 1941, No. 3490. Convention date, May 23, 1940. Addition to 540,844. Drawings to Specifications. [Class 37] A resistance material having a negative temperature-resistance co-efficient comprises a heattreated mixture of oxides of manganese and copper or of manganese, nickel, and copper. In an example the copper content may be about 15 per cent and the atomic ratio of manganese to nickel between 2 and 4. The material may be made by adding a solution of a copper compound to a mixture of oxides of manganese and nickel, drying the mixture, and heating it. Heating may be effected at 800-1450‹ C.
GB349041A 1939-06-23 1941-03-14 Resistance composition and method of making it Expired GB545679A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US280692A US2274592A (en) 1939-06-23 1939-06-23 Resistance material and method of making the same
US336734A US2282944A (en) 1940-05-23 1940-05-23 Resistance composition and method of making it

Publications (1)

Publication Number Publication Date
GB545679A true GB545679A (en) 1942-06-08

Family

ID=31720241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB349041A Expired GB545679A (en) 1939-06-23 1941-03-14 Resistance composition and method of making it

Country Status (1)

Country Link
GB (1) GB545679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944818C (en) * 1952-07-30 1956-06-21 Philips Nv Temperature-dependent dwarf resistance element
US2863840A (en) * 1956-01-31 1958-12-09 Philips Corp Electrical resistor
EP0476657A1 (en) * 1990-09-21 1992-03-25 Siemens Aktiengesellschaft Thermistor with negative temperature coefficient produced by multilayer technology

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944818C (en) * 1952-07-30 1956-06-21 Philips Nv Temperature-dependent dwarf resistance element
US2863840A (en) * 1956-01-31 1958-12-09 Philips Corp Electrical resistor
EP0476657A1 (en) * 1990-09-21 1992-03-25 Siemens Aktiengesellschaft Thermistor with negative temperature coefficient produced by multilayer technology

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