GB148995A - Improvements in electrical systems involving three electrode thermionic tube elements - Google Patents

Improvements in electrical systems involving three electrode thermionic tube elements

Info

Publication number
GB148995A
GB148995A GB20892/20A GB2089220A GB148995A GB 148995 A GB148995 A GB 148995A GB 20892/20 A GB20892/20 A GB 20892/20A GB 2089220 A GB2089220 A GB 2089220A GB 148995 A GB148995 A GB 148995A
Authority
GB
United Kingdom
Prior art keywords
resistance
voltage
terminals
tube
value
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
GB20892/20A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB148995A publication Critical patent/GB148995A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/38—Positive-feedback circuit arrangements without negative feedback
    • H03F1/40—Positive-feedback circuit arrangements without negative feedback in discharge-tube amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Secondary Cells (AREA)
  • Amplifiers (AREA)

Abstract

148,995. Latour, M. Dec. 16, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic relays and repeaters.-Relates to a thermionic tube system intended to create the effect of a negative resistance. The plate circuit of the tube 1 comprises two batteries 3, 5, and .a resistance 12, and the voltage of the battery 5 is arranged to compensate normally for the drop of potential between the terminals 10, 11 of the resistance 12 so that normally the voltage between the terminals is zero. The two batteries 4, 6 and the resistance 15 are similarly connected in the plate circuit of the tube 2 so that the voltage between terminals 13, 14 of the resistance 15 is zero. If a current (value i) flows through imped- .ance 9 (value z) it produces a voltage z i between the grid and filament of tube 1, and it is stated that this voltage, successively amplified by the two tubes 1, 2, results in producing the equivalent of a negative resistance between the terminals 13, 14. This negative resistance may be obtained of any desired value by making impedance 9 of a suitable value and any desired number of pairs of tubes may be used. The device may be inserted in a telephone line to balance the impedance of the line.
GB20892/20A 1922-12-05 1920-07-12 Improvements in electrical systems involving three electrode thermionic tube elements Expired GB148995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR470910X 1922-12-05

Publications (1)

Publication Number Publication Date
GB148995A true GB148995A (en) 1922-01-12

Family

ID=8902559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20892/20A Expired GB148995A (en) 1922-12-05 1920-07-12 Improvements in electrical systems involving three electrode thermionic tube elements

Country Status (3)

Country Link
DE (1) DE470910C (en)
FR (2) FR501472A (en)
GB (1) GB148995A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744087C (en) * 1938-02-18 1944-01-08 Aeg Negative AC resistance

Also Published As

Publication number Publication date
FR27358E (en) 1924-06-24
DE470910C (en) 1929-02-07
FR501472A (en) 1920-04-15

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