GB557710A - Circuit arrangements for resistance elements having a high resistance-temperature coefficient - Google Patents

Circuit arrangements for resistance elements having a high resistance-temperature coefficient

Info

Publication number
GB557710A
GB557710A GB7302/42A GB730242A GB557710A GB 557710 A GB557710 A GB 557710A GB 7302/42 A GB7302/42 A GB 7302/42A GB 730242 A GB730242 A GB 730242A GB 557710 A GB557710 A GB 557710A
Authority
GB
United Kingdom
Prior art keywords
heating coil
resistance
thermistor
series
parallel
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
GB7302/42A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB7302/42A priority Critical patent/GB557710A/en
Priority to US500001A priority patent/US2375497A/en
Publication of GB557710A publication Critical patent/GB557710A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01C7/04—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 negative temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Thermistors And Varistors (AREA)
  • Resistance Heating (AREA)

Abstract

557,710. Temperature - variable resistances. STANDARD TELEPHONES & CABLES, Ltd., and SCULLY, C. T. May 29, 1942, No. 7302. [Class 37] A two-terminal non- linear resistance network comprises an indirectly heated thermistor having its resistance element and heating coil connected in the network so that the resistance element is heated both directly and indirectly by the current supplied to the terminals of the network, or by a current proportional thereto. The resistance element R of an indirectly heated thermistor T and the corresponding heating coil r may be in series, as shown in Fig. 1, and the heating coil r may have an additional resistance of the ordinary type in parallel with it. Alternatively the element R and heating coil r may be in parallel, with or without an additional resistance in series with the heating coil. In a modification, Fig. 5, a separate directly heated thermistor TS is mounted in the same envelope as the resistance element R and heating coil r and is connected in series with the heating coil r. Alternatively the thermistor. TS may be a separate element mounted outside the thermistor envelope. A resistance RP may be connected in parallel with the heating coil r. Alternatively the separate thermistor may be in parallel with the heating coil, the extra resistance being in series. The heating coil may be connected through a transformer or autotransformer. The auxiliary resistances may be mounted inside the envelope of the thermistor to form a self-contained unit. The indirectly heated thermistor R and the directly heated thermistor TS may have positive or negative temperature coefficients of resistance.
GB7302/42A 1942-05-29 1942-05-29 Circuit arrangements for resistance elements having a high resistance-temperature coefficient Expired GB557710A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7302/42A GB557710A (en) 1942-05-29 1942-05-29 Circuit arrangements for resistance elements having a high resistance-temperature coefficient
US500001A US2375497A (en) 1942-05-29 1943-08-25 Circuit arrangement for resistance elements having a high resistancetemperature coefficient

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7302/42A GB557710A (en) 1942-05-29 1942-05-29 Circuit arrangements for resistance elements having a high resistance-temperature coefficient

Publications (1)

Publication Number Publication Date
GB557710A true GB557710A (en) 1943-12-01

Family

ID=9830510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7302/42A Expired GB557710A (en) 1942-05-29 1942-05-29 Circuit arrangements for resistance elements having a high resistance-temperature coefficient

Country Status (2)

Country Link
US (1) US2375497A (en)
GB (1) GB557710A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533286A (en) * 1946-07-22 1950-12-12 Univ Minnesota Heat sensitive circuits
US2663782A (en) * 1950-09-12 1953-12-22 Bell Telephone Labor Inc Circuit regulating device
US2646489A (en) * 1951-07-17 1953-07-21 Roger A Mcarron Variable resistance auxiliary electrical receptacle for electrical lighting appliances
US3794950A (en) * 1971-01-04 1974-02-26 Texas Instruments Inc Overcurrent protection system and sensor used therewith
US3742476A (en) * 1971-11-05 1973-06-26 Apex Supply Co Fluid flow indicating system
GB1604848A (en) * 1977-11-09 1981-12-16 Tait D A G Ac circuits including variable resistance devices

Also Published As

Publication number Publication date
US2375497A (en) 1945-05-08

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