GB807888A - Curie point device for electrical temperature control - Google Patents

Curie point device for electrical temperature control

Info

Publication number
GB807888A
GB807888A GB24196/56A GB2419656A GB807888A GB 807888 A GB807888 A GB 807888A GB 24196/56 A GB24196/56 A GB 24196/56A GB 2419656 A GB2419656 A GB 2419656A GB 807888 A GB807888 A GB 807888A
Authority
GB
United Kingdom
Prior art keywords
curie point
coil
temperature control
core
resistor
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
GB24196/56A
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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 Foxboro Co filed Critical Foxboro Co
Publication of GB807888A publication Critical patent/GB807888A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/26—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a permeability varying with temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • General Induction Heating (AREA)
  • Control Of Temperature (AREA)

Abstract

807,888. Automatic temperature control systems. FOXBORO CO. Aug. 7, 1956 [Aug. 4, 1955], No. 24196/56. Class 38 (4). Temperature control of an oven is effected by utilizing the fall in magnetic permeability at the Curie point of a core of appropriate metal or alloy of a coil-core combination to reduce the heating of a resistor in the same A.C. circuit as the coil. In Fig. 2 the fall in impedance of coil 10 with core 11 forming part of potentiometer 10-11, 14 reduces the voltage across heating resistor 12; alternatively the coil may form part of a parallel or series-tuned circuit in resonance below the Curie point but which is detuned above this point to reduce the voltage or current available to the heating resistor. Fig. 10 shows a transformer 40 the coupling of which falls off at the Curie point to reduce the power delivered to resistor 41. Examples of metals and alloys suitable for core materials for different temperatures are given.
GB24196/56A 1955-08-04 1956-08-07 Curie point device for electrical temperature control Expired GB807888A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US807888XA 1955-08-04 1955-08-04
US526511A US2825868A (en) 1955-08-04 1955-08-04 Curie point control device

Publications (1)

Publication Number Publication Date
GB807888A true GB807888A (en) 1959-01-21

Family

ID=62200107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24196/56A Expired GB807888A (en) 1955-08-04 1956-08-07 Curie point device for electrical temperature control

Country Status (2)

Country Link
US (1) US2825868A (en)
GB (1) GB807888A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201319A (en) * 1987-02-17 1988-08-24 Bosch Siemens Hausgeraete Electrical heating device controlled by a Curie point sensor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852653A (en) * 1956-08-17 1958-09-16 Collins Radio Co Ferrite heater and heat sensor
US3065402A (en) * 1959-12-21 1962-11-20 Ibm Temperature stabilized non-linear reactance elements and circuits
US3054044A (en) * 1959-12-30 1962-09-11 Ibm Temperature sensing circuit
JP2544501B2 (en) * 1990-03-30 1996-10-16 シャープ株式会社 Microwave oven with inverter power supply

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655847A (en) * 1926-01-02 1928-01-10 Western Electric Co Magnetic temperature regulator
US1697148A (en) * 1926-08-14 1929-01-01 Westinghouse Electric & Mfg Co Magnetic pyrometer
US2513779A (en) * 1948-02-06 1950-07-04 Chrysler Corp Heating apparatus
US2644738A (en) * 1951-03-22 1953-07-07 Gen Electric Recording device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201319A (en) * 1987-02-17 1988-08-24 Bosch Siemens Hausgeraete Electrical heating device controlled by a Curie point sensor

Also Published As

Publication number Publication date
US2825868A (en) 1958-03-04

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