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GB555563A - Electric resistor devices - Google Patents

Electric resistor devices

Info

Publication number
GB555563A
GB555563A GB12136/42A GB1213642A GB555563A GB 555563 A GB555563 A GB 555563A GB 12136/42 A GB12136/42 A GB 12136/42A GB 1213642 A GB1213642 A GB 1213642A GB 555563 A GB555563 A GB 555563A
Authority
GB
United Kingdom
Prior art keywords
platinum
alloys
gold
thermistor
iridium
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
GB12136/42A
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
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB555563A publication Critical patent/GB555563A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

555,563. Platinum alloys; coatine with metals, STANDARD TELEPHONES & CABLES, Ltd., Aug. 28, 1942, No. 12136. Convention date, Aug. 30, 1941. Drawings to Specification. [Classes 82 (i) and 82 (ii)] [Also in Group XXXVI] To reduce conduction losses through the leads of a thermistor they are made of an alloy having an abnormally low Wiedsmann-Franz ratio. which is defined as KP/T, where K is the thermal conductivity in watt-centimetre-‹C units, P is resistivity, and T the absolute temperature. Suitable alloys are those containing combinations of platinum, palladium, iridium, ruthenium, rhodium and osmium, for example, 20-30 per cent. iridium, or 2 per cent. of copper or iron may be added to platinum, these alloys having higher resistivity, but lower thermal conductivity, than pure metals. The outer layer of the thermistor may be of platinum, gold or silver applied, for example, by chemical deposition. Thus a "bright" solution, such as gold bright comprising gold chloride and oils of rosemary and lavender, may be applied, the device being heated to 800‹C. to change the material to the metallic state.
GB12136/42A 1941-08-30 1942-08-28 Electric resistor devices Expired GB555563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US408914A US2332596A (en) 1941-08-30 1941-08-30 Resistor device

Publications (1)

Publication Number Publication Date
GB555563A true GB555563A (en) 1943-08-27

Family

ID=23618292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12136/42A Expired GB555563A (en) 1941-08-30 1942-08-28 Electric resistor devices

Country Status (2)

Country Link
US (1) US2332596A (en)
GB (1) GB555563A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505066A (en) * 1947-09-17 1950-04-25 Bell Telephone Labor Inc Method of making assemblies of resistor bodies
US2651699A (en) * 1951-01-30 1953-09-08 Int Standard Electric Corp Thermosensitive resistance element

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714054A (en) * 1952-02-15 1955-07-26 Houdry Process Corp Method of treating chromic oxide
US3025706A (en) * 1957-11-20 1962-03-20 Victory Engineering Corp Temperature sensing device
US3110875A (en) * 1961-05-18 1963-11-12 Victory Engineering Corp Bead type thermistor and method
US3197725A (en) * 1961-09-05 1965-07-27 Victory Engineering Corp Bead type thermistors
US3237139A (en) * 1962-09-05 1966-02-22 Rosemount Eng Co Ltd Hollow temperature sensor
US3387115A (en) * 1965-10-14 1968-06-04 Owens Coring Fiberglas Corp Programming apparatus
GB1141644A (en) * 1965-11-10 1969-01-29 Standard Telephones Cables Ltd Electrical switching and memory devices
US3381253A (en) * 1966-03-04 1968-04-30 Victory Engineering Corp High speed wide range surface sensor thermistor
JPS5262644A (en) * 1975-11-19 1977-05-24 Tokai Rika Co Ltd Overcurrent preventive limiting element
DE3832379A1 (en) * 1988-09-23 1990-03-29 Knorr Elektronik Flow sensor
JP2002531246A (en) 1998-12-02 2002-09-24 マサチューセッツ・インスティチュート・オブ・テクノロジー Integrated palladium-based micromembrane for hydrogen separation and hydrogenation / dehydrogenation reactions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505066A (en) * 1947-09-17 1950-04-25 Bell Telephone Labor Inc Method of making assemblies of resistor bodies
US2651699A (en) * 1951-01-30 1953-09-08 Int Standard Electric Corp Thermosensitive resistance element

Also Published As

Publication number Publication date
US2332596A (en) 1943-10-26

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