GB493607A - Improvements in electric resistance elements - Google Patents

Improvements in electric resistance elements

Info

Publication number
GB493607A
GB493607A GB1055938A GB1055938A GB493607A GB 493607 A GB493607 A GB 493607A GB 1055938 A GB1055938 A GB 1055938A GB 1055938 A GB1055938 A GB 1055938A GB 493607 A GB493607 A GB 493607A
Authority
GB
United Kingdom
Prior art keywords
cellulose
solution
lacquer
coating
paper
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
GB1055938A
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.)
BENJAMIN FREDERICK HUGGINS
GEOFFREY CHARLES GAUT
HAROLD VIVIEN GEORGE STUBBS
Plessey Co Ltd
Original Assignee
BENJAMIN FREDERICK HUGGINS
GEOFFREY CHARLES GAUT
HAROLD VIVIEN GEORGE STUBBS
Plessey 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 BENJAMIN FREDERICK HUGGINS, GEOFFREY CHARLES GAUT, HAROLD VIVIEN GEORGE STUBBS, Plessey Co Ltd filed Critical BENJAMIN FREDERICK HUGGINS
Priority to GB1055938A priority Critical patent/GB493607A/en
Publication of GB493607A publication Critical patent/GB493607A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Conductive Materials (AREA)
  • Non-Adjustable Resistors (AREA)

Abstract

An electric resistance element as claimed in the parent Specification, i.e. one in which an electrically conductive material is added to a compound and exposed to electromagnetic radiation, is provided with a surface coating which prevents variations of resistance value due to moisture. Where the element is a resistance coating on a paper carrier, the paper is also provided with a protective coating on each surface. The waterproof surface coating is a carbon-containing lacquer formed by adding carbon to a solution of a cellulose derivative or a polystyrol solution. Such a lacquer may comprise finely divided carbon beaten into a solution of cellulose acetobutyrate and spermaceti wax in diamyl tartrate and ethylene dichloride. Two separate lacquer layers can be applied to the paper backing of the resistor element, these layers being formed by solutions of two different cellulose derivatives, or one of a cellulose derivative and the other of polystyrol. Such lacquers comprise cellulose nitrate, acetate, or acetobutyrate with benzyl abietate and butyl stearate dissolved in ethyl acetate, acetone or ethylene dichloride.
GB1055938A 1938-04-06 1938-04-06 Improvements in electric resistance elements Expired GB493607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1055938A GB493607A (en) 1938-04-06 1938-04-06 Improvements in electric resistance elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1055938A GB493607A (en) 1938-04-06 1938-04-06 Improvements in electric resistance elements

Publications (1)

Publication Number Publication Date
GB493607A true GB493607A (en) 1938-10-11

Family

ID=9970066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1055938A Expired GB493607A (en) 1938-04-06 1938-04-06 Improvements in electric resistance elements

Country Status (1)

Country Link
GB (1) GB493607A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629166A (en) * 1948-10-07 1953-02-24 Int Resistance Co Method of forming resistor assemblies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629166A (en) * 1948-10-07 1953-02-24 Int Resistance Co Method of forming resistor assemblies

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