GB778898A - Improvements in or relating to electrical resistors - Google Patents

Improvements in or relating to electrical resistors

Info

Publication number
GB778898A
GB778898A GB3252755A GB3252755A GB778898A GB 778898 A GB778898 A GB 778898A GB 3252755 A GB3252755 A GB 3252755A GB 3252755 A GB3252755 A GB 3252755A GB 778898 A GB778898 A GB 778898A
Authority
GB
United Kingdom
Prior art keywords
film
resistive
ceramic core
core
end leads
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
GB3252755A
Inventor
Desmond Gardner
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.)
Painton and Co Ltd
Original Assignee
Painton and Co 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 Painton and Co Ltd filed Critical Painton and Co Ltd
Priority to GB3252755A priority Critical patent/GB778898A/en
Publication of GB778898A publication Critical patent/GB778898A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/028—Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Details Of Resistors (AREA)
  • Non-Adjustable Resistors (AREA)

Abstract

778,898. Fixed resistors. PAINTON & CO., Ltd., and BENHAM, C. M. Nov. 14, 1955, No. 32527/55. Addition to 626,128. Class 37. A power-dissipating resistor comprises a film of conductive resistive material deposited on a ceramic core which has a high thermal conductivity (k) not less than 0.025 c.g.s. units. The ceramic core may be made of the material having the Registered Trade Mark " Sintox " and the resistive film may be of carbon or a metallic material or oxide such as tin oxide. Part of the film may be removed to adjust the value of the resistor to a desired value leaving for example a meandering or helical ribbon of resistive material between its end leads. This may be done by grinding or scribing or where a metallic film is used by a photo-etching process such as described in Specification 689,795. A considerable proportion of the heat generated in the resistive element is conducted via the ceramic core and dissipated via the end leads, cooling may be facilitated' by passing an air stream through the bore of the core.
GB3252755A 1955-11-14 1955-11-14 Improvements in or relating to electrical resistors Expired GB778898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3252755A GB778898A (en) 1955-11-14 1955-11-14 Improvements in or relating to electrical resistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3252755A GB778898A (en) 1955-11-14 1955-11-14 Improvements in or relating to electrical resistors

Publications (1)

Publication Number Publication Date
GB778898A true GB778898A (en) 1957-07-10

Family

ID=10339967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3252755A Expired GB778898A (en) 1955-11-14 1955-11-14 Improvements in or relating to electrical resistors

Country Status (1)

Country Link
GB (1) GB778898A (en)

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