GB633418A - Improvements in or relating to electrical resistances - Google Patents

Improvements in or relating to electrical resistances

Info

Publication number
GB633418A
GB633418A GB3334546A GB3334546A GB633418A GB 633418 A GB633418 A GB 633418A GB 3334546 A GB3334546 A GB 3334546A GB 3334546 A GB3334546 A GB 3334546A GB 633418 A GB633418 A GB 633418A
Authority
GB
United Kingdom
Prior art keywords
electrodes
resistance
rod
carbon
conducting
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
GB3334546A
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
Priority to GB3334546A priority Critical patent/GB633418A/en
Publication of GB633418A publication Critical patent/GB633418A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
    • H01C17/24—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
    • 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
    • H01C7/22—Elongated resistive element being bent or curved, e.g. sinusoidal, helical

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Non-Insulated Conductors (AREA)
  • Details Of Resistors (AREA)

Abstract

633,418. Resistance coatings and deposits. STANDARD TELEPHONES & CABLES, Ltd., and FELDHUSEN, I. V. Nov. 9, 1946, No. 33345. [Class 37] A resistance consists of a non-conducting, e.g. a ceramic rod coated with a carbon layer 2 and with end electrodes 3, 5 which are deposited as a metal paste subsequently dried by baking, the electrodes having interlacing fingers 4, 6 separated by a conducting carbon path 7, wide in relation to its length. The resistance value is adjustable by varying the dimensions of the fingers, grinding away the carbon film, or depositing a thin metal film over the carbon layer by sputtering or evaporation. The cross section of the rod may be other than circular, the resistance film and electrodes may be deposited inside and or outside a tube, or the electrodes may comprise metal inserts moulded into the rod. The Provisional Specification refers to electrodes applied as two narrow parallel helical strips. Specification 569,388, [Group II], is referred to.
GB3334546A 1946-11-09 1946-11-09 Improvements in or relating to electrical resistances Expired GB633418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3334546A GB633418A (en) 1946-11-09 1946-11-09 Improvements in or relating to electrical resistances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3334546A GB633418A (en) 1946-11-09 1946-11-09 Improvements in or relating to electrical resistances

Publications (1)

Publication Number Publication Date
GB633418A true GB633418A (en) 1949-12-19

Family

ID=10351752

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3334546A Expired GB633418A (en) 1946-11-09 1946-11-09 Improvements in or relating to electrical resistances

Country Status (1)

Country Link
GB (1) GB633418A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2655582A (en) * 1952-02-01 1953-10-13 Mepco Inc Noninductive electrical resistor
US3858147A (en) * 1972-12-14 1974-12-31 R Caddock Non-inductive film-type cylindrical resistor
DE2700946A1 (en) * 1977-01-12 1978-07-13 Draloric Electronic Adjustable layer resistor formed by printing - consists of two meandering lines connected by adjacent turning points, and adjusted by cutting at opposite turning points

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2655582A (en) * 1952-02-01 1953-10-13 Mepco Inc Noninductive electrical resistor
US3858147A (en) * 1972-12-14 1974-12-31 R Caddock Non-inductive film-type cylindrical resistor
DE2700946A1 (en) * 1977-01-12 1978-07-13 Draloric Electronic Adjustable layer resistor formed by printing - consists of two meandering lines connected by adjacent turning points, and adjusted by cutting at opposite turning points

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