GB911741A - Improvements in or relating to resistors having a positive temperature coefficient of resistance, methods of producing same, and electrical apparatus incorporating same - Google Patents

Improvements in or relating to resistors having a positive temperature coefficient of resistance, methods of producing same, and electrical apparatus incorporating same

Info

Publication number
GB911741A
GB911741A GB1476859A GB1476859A GB911741A GB 911741 A GB911741 A GB 911741A GB 1476859 A GB1476859 A GB 1476859A GB 1476859 A GB1476859 A GB 1476859A GB 911741 A GB911741 A GB 911741A
Authority
GB
United Kingdom
Prior art keywords
resistance
temperature
resistor
resistors
same
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
GB1476859A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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
Priority claimed from DE1958S0059080 external-priority patent/DE1286242B/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB911741A publication Critical patent/GB911741A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
    • H01C17/288—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals by thin film techniques
    • 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
    • H01C7/02—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 having positive temperature coefficient
    • 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
    • H01C7/02—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 having positive temperature coefficient
    • H01C7/022—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 having positive temperature coefficient mainly consisting of non-metallic substances
    • H01C7/023—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 having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
    • H01C7/025—Perovskites, e.g. titanates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)

Abstract

911,741. Electrically-heated irons and hotplates. SIEMENS & HALSKE A.G. April 30, 1959 [April 30, 1958; June 4, 1958; July 22, 1958], No. 14768/59. Class 39 (3). [Also in Groups XXXV and XXXVI] A resistor for use in an automatic temperature control system comprises a body of ceramic ferro-electric material to which impurity conductivity has been imparted and to which ohmic contacts have been applied, the temperature co-efficient of resistance of the resistor being positive at least over a range of temperature, the resistance rising steeply with rising temperature, achieving, e.g. a ten-fold increase of resistance for a temperature rise of 20‹ C. Such resistors except for the contact layers are described and claimed in Specifications 900,771, 900,772, and 900,773 [Group XXXVI]. In Fig. 4, a resistor 42 according to the invention is connected in series with the heating element 44 of an electric iron, the operating temperature of the base 43 of the iron being manually set by means 41 which varies the distance of the resistor 42 from the base 43; as this pre-set temperature is reached, the resistance of the resistor 42 becomes so high that the current through the element falls to a very low value. Fig. 5 shows a hotplate 56, the heating elements of which are formed by resistors 58 according to the invention. The resistors 58 are rectangular rods secured to the plate 56 by bolts 51 and a pressure plate 59 and insulated from it by a mica sheet 57.
GB1476859A 1958-04-30 1959-04-30 Improvements in or relating to resistors having a positive temperature coefficient of resistance, methods of producing same, and electrical apparatus incorporating same Expired GB911741A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DES0058065 1958-04-30
DES0058484 1958-06-04
DE1958S0059080 DE1286242B (en) 1958-07-22 1958-07-22 Electrically heated device that is provided with an electrical resistance element with a positive temperature coefficient for automatic temperature control

Publications (1)

Publication Number Publication Date
GB911741A true GB911741A (en) 1962-11-28

Family

ID=27212630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1476859A Expired GB911741A (en) 1958-04-30 1959-04-30 Improvements in or relating to resistors having a positive temperature coefficient of resistance, methods of producing same, and electrical apparatus incorporating same

Country Status (3)

Country Link
CH (1) CH375068A (en)
FR (1) FR1223114A (en)
GB (1) GB911741A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840242C2 (en) * 1978-09-15 1984-08-23 Siemens AG, 1000 Berlin und 8000 München Heating device for preheating heating oil

Also Published As

Publication number Publication date
FR1223114A (en) 1960-06-15
CH375068A (en) 1964-02-15

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