GB611250A - Improvements in and relating to electrical resistors - Google Patents

Improvements in and relating to electrical resistors

Info

Publication number
GB611250A
GB611250A GB1087746A GB1087746A GB611250A GB 611250 A GB611250 A GB 611250A GB 1087746 A GB1087746 A GB 1087746A GB 1087746 A GB1087746 A GB 1087746A GB 611250 A GB611250 A GB 611250A
Authority
GB
United Kingdom
Prior art keywords
tube
metal layer
spiral
metal
resistance
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
GB1087746A
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey 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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Priority to GB1087746A priority Critical patent/GB611250A/en
Publication of GB611250A publication Critical patent/GB611250A/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
    • H01C7/22—Elongated resistive element being bent or curved, e.g. sinusoidal, helical
    • 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

Landscapes

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

Abstract

611,250. Resistance coatings and deposits. JOHNSON, MATTHEY, & CO., Ltd., and WYETH, E. J. April 9, 1946, No. 10877. [Class 37] A resistor comprises an insulating tube having on its inner surface a metal layer formed partly or wholly as a continuous spiral. In a preferred method of manufacturing such a resistor, the tube 1 is of glass or porcelain and the layer is formed by applying a solution of a sulphurresinate or resinate of a precious metal, such as gold, silver or platinum in essential oils, and subsequently firing at such a temperature that the organic matter is burned away and the previous metal is left firmly adhering to the inner surface of the tube 1, Fig. 1 (not shown). A spiral groove 3 is then cut in the metal layer either by securing the tube 1 and rotating a pointed tool around the coated surface or rotating the tube and maintaining the cutting tool stationary. The pitch of the resistance spiral 4 thus formed throughout the length of the tube 1, Fig. 2 (not shown), may be varied according to the resistance value required. The tube 1 may be of glazed porcelain or glazed earthenware and the metal layer a precious metal alloy.
GB1087746A 1946-04-09 1946-04-09 Improvements in and relating to electrical resistors Expired GB611250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1087746A GB611250A (en) 1946-04-09 1946-04-09 Improvements in and relating to electrical resistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1087746A GB611250A (en) 1946-04-09 1946-04-09 Improvements in and relating to electrical resistors

Publications (1)

Publication Number Publication Date
GB611250A true GB611250A (en) 1948-10-27

Family

ID=9975972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1087746A Expired GB611250A (en) 1946-04-09 1946-04-09 Improvements in and relating to electrical resistors

Country Status (1)

Country Link
GB (1) GB611250A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645701A (en) * 1950-01-25 1953-07-14 Johnson Matthey Co Ltd Electrical resistor and resistance elements therefor
US2792620A (en) * 1953-08-20 1957-05-21 Wilbur M Kohring Sealed resistors
DE1120583B (en) * 1959-03-20 1961-12-28 Siemens Ag High voltage measuring resistor
US3052862A (en) * 1952-06-07 1962-09-04 John G Ruckelshaus Fixed resistor
US3059197A (en) * 1952-06-07 1962-10-16 John G Ruckelshaus Potentiometer
US3067315A (en) * 1960-02-08 1962-12-04 Gen Electric Multi-layer film heaters in strip form

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645701A (en) * 1950-01-25 1953-07-14 Johnson Matthey Co Ltd Electrical resistor and resistance elements therefor
US3052862A (en) * 1952-06-07 1962-09-04 John G Ruckelshaus Fixed resistor
US3059197A (en) * 1952-06-07 1962-10-16 John G Ruckelshaus Potentiometer
US2792620A (en) * 1953-08-20 1957-05-21 Wilbur M Kohring Sealed resistors
DE1120583B (en) * 1959-03-20 1961-12-28 Siemens Ag High voltage measuring resistor
US3067315A (en) * 1960-02-08 1962-12-04 Gen Electric Multi-layer film heaters in strip form

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