GB465923A - Resistance units of silver sulphide and circuits utilising them - Google Patents

Resistance units of silver sulphide and circuits utilising them

Info

Publication number
GB465923A
GB465923A GB917636A GB917636A GB465923A GB 465923 A GB465923 A GB 465923A GB 917636 A GB917636 A GB 917636A GB 917636 A GB917636 A GB 917636A GB 465923 A GB465923 A GB 465923A
Authority
GB
United Kingdom
Prior art keywords
silver
units
resistance
silver sulphide
sulphide
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
GB917636A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB917636A priority Critical patent/GB465923A/en
Publication of GB465923A publication Critical patent/GB465923A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/10—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances sulfides

Abstract

Resistance units of silver sulphide having a high negative temperature coefficient of resistance are made by (a) compressing silver sulphide powder into a coherent mass by a pressure of at least 10000 lb. sq. inch; (b) depositing silver sulphide on a supporting member by chemical reaction from a sulphur containing solution of silver salts; (c) suspending a mass of silver in an atmosphere of sulphur vapour at 300 DEG C., the unit so formed being aged by heating in dry nitrogen at a temperature between 200--300 DEG C., for one hour. The unit produced by compression of silver sulphide powder may be heated in sulphur vapour at 300--400 DEG C. before heating in nitrogen. Coatings may be produced on glass, ceramic or similar material by deposition from a solution containing silver nitrate and thiourea by treatment with sodium hydroxide, or from solutions of silver nitrate or acetate and sodium thiosulphate or thiocyanate, the carrier being washed in stannous chloride solution. The units are completed by spraying metal on to the ends thereof, and securing conducting leads to the deposit. The units may be used to control the gain of an amplifier or compensate for variations in the resistance of transmission lines.
GB917636A 1936-03-27 1936-03-27 Resistance units of silver sulphide and circuits utilising them Expired GB465923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB917636A GB465923A (en) 1936-03-27 1936-03-27 Resistance units of silver sulphide and circuits utilising them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB917636A GB465923A (en) 1936-03-27 1936-03-27 Resistance units of silver sulphide and circuits utilising them

Publications (1)

Publication Number Publication Date
GB465923A true GB465923A (en) 1937-05-19

Family

ID=9866870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB917636A Expired GB465923A (en) 1936-03-27 1936-03-27 Resistance units of silver sulphide and circuits utilising them

Country Status (1)

Country Link
GB (1) GB465923A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE849860C (en) * 1937-09-15 1952-09-18 Telefunken Gmbh Receiver with a shrinkage control acting in the high and low frequency parts
DE764540C (en) * 1937-08-30 1952-12-22 Int Standard Electric Corp Method of manufacturing a resistor from silver sulfide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764540C (en) * 1937-08-30 1952-12-22 Int Standard Electric Corp Method of manufacturing a resistor from silver sulfide
DE849860C (en) * 1937-09-15 1952-09-18 Telefunken Gmbh Receiver with a shrinkage control acting in the high and low frequency parts

Similar Documents

Publication Publication Date Title
GB1089911A (en) Improvements in and relating to glass
ES448927A1 (en) Process for the treatment of glass by metal migration
GB465923A (en) Resistance units of silver sulphide and circuits utilising them
GB800441A (en) Improvements in or relating to methods of coating a support with a lead sulphide layer
ES278200A1 (en) Perfected method of realization of thermochemical ion change (Machine-translation by Google Translate, not legally binding)
IE33173L (en) Surface-treating glass
GB821062A (en) Dry lubricant
GB953705A (en) Method of and copper alloy for bonding together metal parts and for metallized insulator parts
GB1387267A (en) Thick film circuits
GB881728A (en) Improvements in or relating to the treatment of paper or board materials
GB573142A (en) Improvements in the metallising of ceramics
GB834303A (en) Improvements in metallizing ceramics
GB1249623A (en) Improvements in or relating to metal coatings
GB702960A (en) Improvements in or relating to methods of protecting against oxidation an article ofmolybdenum or of an alloy consisting mainly of molybdenum
GB774210A (en) Process of manufacturing glass mirrors
GB818264A (en) Enamelled ferrous articles
ES266186A1 (en) Improvements in or relating to the treatment of molybdenum wire
ES224625A1 (en) A procedure for the thermal treatment of glass objects (Machine-translation by Google Translate, not legally binding)
GB841254A (en) Improvements in or relating to methods of producing semi-conductive devices
GB1004390A (en) Improvements in or relating to sulphidic phosphors which are insensitive to copper and nickel contaminations
GB794794A (en) Electroconductive article
GB894591A (en) Improvements in components of clockwork and like mechanisms and processes for their manufacture
GB559183A (en) Improvements in thermocouples
GB635102A (en) Improvements in and relating to silvering organic surfaces
ES392453A3 (en) A procedure for the production of corn poppies. (Machine-translation by Google Translate, not legally binding)