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GB497555A - Improvements in thermionic amplifiers - Google Patents

Improvements in thermionic amplifiers

Info

Publication number
GB497555A
GB497555A GB15218/38A GB1521838A GB497555A GB 497555 A GB497555 A GB 497555A GB 15218/38 A GB15218/38 A GB 15218/38A GB 1521838 A GB1521838 A GB 1521838A GB 497555 A GB497555 A GB 497555A
Authority
GB
United Kingdom
Prior art keywords
amplifier
frequencies
terminals
transformers
voltage
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
GB15218/38A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB497555A publication Critical patent/GB497555A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Amplifiers (AREA)

Abstract

497,555. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. May 21, 1938, No. 15218. Convention date, May 24, 1937. [Class 40 (v)] In an amplifier employing negative feedback two transformers having differing leakage - resonance frequencies are connected between the terminals of the amplifier from which the feedback voltage is derived and the terminals to which this voltage is supplied. The Figure shows an arrangement employing transformers T1, T2. The higher leakage-resonance frequency is preferably beyond the range of frequencies uniformly amplified by the amplifier and the two frequencies are so chosen as to ensure stability.
GB15218/38A 1937-05-24 1938-05-21 Improvements in thermionic amplifiers Expired GB497555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE206312X 1937-05-24

Publications (1)

Publication Number Publication Date
GB497555A true GB497555A (en) 1938-12-21

Family

ID=5791826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15218/38A Expired GB497555A (en) 1937-05-24 1938-05-21 Improvements in thermionic amplifiers

Country Status (5)

Country Link
US (1) US2221116A (en)
BE (1) BE428227A (en)
CH (1) CH206312A (en)
FR (1) FR838319A (en)
GB (1) GB497555A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008092A (en) * 1957-01-21 1961-11-07 Modern Telephones Great Britai Transistor amplifiers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752433A (en) * 1948-06-30 1956-06-26 Emi Ltd Negative feedback amplifiers
US3038125A (en) * 1958-04-18 1962-06-05 Philips Corp Negative feedback circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008092A (en) * 1957-01-21 1961-11-07 Modern Telephones Great Britai Transistor amplifiers

Also Published As

Publication number Publication date
CH206312A (en) 1939-07-31
BE428227A (en)
US2221116A (en) 1940-11-12
FR838319A (en) 1939-03-02

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