GB807888A - Curie point device for electrical temperature control - Google Patents
Curie point device for electrical temperature controlInfo
- 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
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.
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)
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)
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)
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 |
-
1955
- 1955-08-04 US US526511A patent/US2825868A/en not_active Expired - Lifetime
-
1956
- 1956-08-07 GB GB24196/56A patent/GB807888A/en not_active Expired
Cited By (1)
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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