BE426240A - - Google Patents

Info

Publication number
BE426240A
BE426240A BE426240DA BE426240A BE 426240 A BE426240 A BE 426240A BE 426240D A BE426240D A BE 426240DA BE 426240 A BE426240 A BE 426240A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE426240A publication Critical patent/BE426240A/xx

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G1/00Details of arrangements for controlling amplification
    • H03G1/0005Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0041Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using thermistors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-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
    • H01C7/04Non-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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24Frequency- independent attenuators
    • H03H7/25Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
    • H03H7/251Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a thermistor

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Temperature (AREA)
  • Thermistors And Varistors (AREA)
BE426240D 1937-02-06 1938-02-07 BE426240A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE833355X 1937-02-06

Publications (1)

Publication Number Publication Date
BE426240A true BE426240A (en:Method) 1938-03-31

Family

ID=6759143

Family Applications (1)

Application Number Title Priority Date Filing Date
BE426240D BE426240A (en:Method) 1937-02-06 1938-02-07

Country Status (4)

Country Link
AT (1) AT156762B (en:Method)
BE (1) BE426240A (en:Method)
FR (1) FR833355A (en:Method)
GB (1) GB514614A (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811695A (en) * 1954-10-18 1957-10-29 Bell Telephone Labor Inc Automatic level control
US3522453A (en) * 1966-07-15 1970-08-04 Jerrold Electronics Corp Variable attenuators

Also Published As

Publication number Publication date
AT156762B (de) 1939-08-25
GB514614A (en) 1939-11-13
FR833355A (fr) 1938-10-20

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