GB1469321A - Resistors - Google Patents

Resistors

Info

Publication number
GB1469321A
GB1469321A GB2286774A GB2286774A GB1469321A GB 1469321 A GB1469321 A GB 1469321A GB 2286774 A GB2286774 A GB 2286774A GB 2286774 A GB2286774 A GB 2286774A GB 1469321 A GB1469321 A GB 1469321A
Authority
GB
United Kingdom
Prior art keywords
adjusted
resistors
cutting
resistor
cermet
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
GB2286774A
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.)
Welwyn Electric Ltd
Original Assignee
Welwyn Electric 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 Welwyn Electric Ltd filed Critical Welwyn Electric Ltd
Priority to GB2286774A priority Critical patent/GB1469321A/en
Publication of GB1469321A publication Critical patent/GB1469321A/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
    • H01C7/003—Thick film resistors
    • 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
    • H01C17/23—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by opening or closing resistor geometric tracks of predetermined resistive values, e.g. snapistors

Landscapes

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

Abstract

1469321 Resistors WELWYN ELECTRIC Ltd 16 April 1975 [22 May 1974] 22867/74 Heading HIS A thick film cermet resistor comprises a first portion 4 formed as a grid one or more segments 11, 12 of which may be cut to increase the resistance in steps, a second portion 5 which can be adjusted, e.g. by cutting along lines 17, 18, to a value within the range of one step of the first portion, and a portion 6 which can be adjusted after the resistor is connected in circuit by its terminals 9, 20. Compensation for tolerances in other circuit components is thus possible. The cutting is preferably performed by a laser and in the case of portion 4 follows the arrow 13. As shown the portions are three distinct elements connected in series by conductive cermet strips.
GB2286774A 1975-04-16 1975-04-16 Resistors Expired GB1469321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2286774A GB1469321A (en) 1975-04-16 1975-04-16 Resistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2286774A GB1469321A (en) 1975-04-16 1975-04-16 Resistors

Publications (1)

Publication Number Publication Date
GB1469321A true GB1469321A (en) 1977-04-06

Family

ID=10186311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2286774A Expired GB1469321A (en) 1975-04-16 1975-04-16 Resistors

Country Status (1)

Country Link
GB (1) GB1469321A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0230761A2 (en) * 1985-12-19 1987-08-05 Marconi Electronic Devices Limited Resistive circuit arrangement
US4841275A (en) * 1986-12-02 1989-06-20 Kabushiki Kaisha Toshiba Thick-film integrated circuit device capable of being manufactured by means of easy-to-perform trimming operation
US6084502A (en) * 1996-03-11 2000-07-04 Matsushita Electric Industrial Co., Ltd. Resistor and method of making the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0230761A2 (en) * 1985-12-19 1987-08-05 Marconi Electronic Devices Limited Resistive circuit arrangement
EP0230761A3 (en) * 1985-12-19 1988-09-07 Marconi Electronic Devices Limited Resistive circuit arrangement
US4841275A (en) * 1986-12-02 1989-06-20 Kabushiki Kaisha Toshiba Thick-film integrated circuit device capable of being manufactured by means of easy-to-perform trimming operation
US6084502A (en) * 1996-03-11 2000-07-04 Matsushita Electric Industrial Co., Ltd. Resistor and method of making the same

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Legal Events

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