US1637924A - Thermionic valve circuits - Google Patents

Thermionic valve circuits Download PDF

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Publication number
US1637924A
US1637924A US144553A US14455326A US1637924A US 1637924 A US1637924 A US 1637924A US 144553 A US144553 A US 144553A US 14455326 A US14455326 A US 14455326A US 1637924 A US1637924 A US 1637924A
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US
United States
Prior art keywords
inductances
circuits
thermionic valve
circuit
valve circuits
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 - Lifetime
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US144553A
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English (en)
Inventor
Willans Peter William
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Individual
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Individual
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Publication date
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Publication of US1637924A publication Critical patent/US1637924A/en
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    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers

Definitions

  • This invention relates to thermionic valve4 therefore it has been the usual practice to avoid such electromagnetic coupling hy arranging; the said inductances in noninductive relationship.
  • This is not always convenient however.
  • the known methods of screening' .the inductances or orientating them in a specific manner may he inconvenientfrom the point of view of design.
  • ⁇ it may be desirable to determine the orientation of the inductances in accordance with other considerations, as for example the elimination of electromagnetic coupling between remoteelements of an amplifier..
  • the inductances are located in mutually inductive relationship and means are provided for neutralizing for a considerable range of wave length the electrornotive force induced in either circuit by the other as a result of the said mutually inductive relationship.
  • the said means comprise means for ninipressing an electromotive force on either circuit as a result ofthe current iiowingin the other.
  • which electromotive force is of such a value as to neutralize the said electroinotive force induced as a result of said mutually inductive relationship.
  • a thermionic valve system comprising a valve having grid, filament and plate elec-u trodes, .an input circuit disposed between said grid and filament electrodes, an output circuit included between said plateand ⁇ ilament electrodes, independent inductances for tuning each of said circuits, an'auxiliary circuit including separate inductance elements in series, one of said elements being coupled to one of said aforementioned inductances and the other of said elements being coupled to the other of said aforementioned independent inductances, and a connection from said auxiliary circuit to said filament electrode ⁇ said inductances beingv related for neutralizing for a considerable range of wave length the electromotive torce induced in either of said input or out- .put circuits by mutual inductive relationship 'of said independent inductances.
  • I rickx my signature In witness whereof I aflix my signature.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Magnetically Actuated Valves (AREA)
US144553A 1925-07-02 1926-10-27 Thermionic valve circuits Expired - Lifetime US1637924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1637924X 1925-07-02

Publications (1)

Publication Number Publication Date
US1637924A true US1637924A (en) 1927-08-02

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ID=10887407

Family Applications (2)

Application Number Title Priority Date Filing Date
US144553A Expired - Lifetime US1637924A (en) 1925-07-02 1926-10-27 Thermionic valve circuits
US144554A Expired - Lifetime US1637977A (en) 1925-07-02 1926-10-27 Thermionic valve circuits

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Application Number Title Priority Date Filing Date
US144554A Expired - Lifetime US1637977A (en) 1925-07-02 1926-10-27 Thermionic valve circuits

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US (2) US1637924A (enExample)
GB (1) GB260325A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427693A (en) * 1942-04-17 1947-09-23 Bell Telephone Labor Inc Coupling system

Also Published As

Publication number Publication date
US1637977A (en) 1927-08-02
GB260325A (enExample)

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