GB524340A - Thermionic valve and like wave amplifying systems - Google Patents

Thermionic valve and like wave amplifying systems

Info

Publication number
GB524340A
GB524340A GB2892/39A GB289239A GB524340A GB 524340 A GB524340 A GB 524340A GB 2892/39 A GB2892/39 A GB 2892/39A GB 289239 A GB289239 A GB 289239A GB 524340 A GB524340 A GB 524340A
Authority
GB
United Kingdom
Prior art keywords
control
change
transmission efficiency
feedback
thermionic valve
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
GB2892/39A
Other languages
English (en)
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
Publication of GB524340A publication Critical patent/GB524340A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal
    • H04B3/12—Control of transmission; Equalising by pilot signal in negative-feedback path of line amplifier
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0041—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using thermistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes
    • H03G3/08—Manually-operated control in untuned amplifiers having discharge tubes incorporating negative feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
GB2892/39A 1938-03-29 1939-01-27 Thermionic valve and like wave amplifying systems Expired GB524340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US198619A US2188671A (en) 1938-03-29 1938-03-29 Wave amplifying system

Publications (1)

Publication Number Publication Date
GB524340A true GB524340A (en) 1940-08-05

Family

ID=22734105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2892/39A Expired GB524340A (en) 1938-03-29 1939-01-27 Thermionic valve and like wave amplifying systems

Country Status (4)

Country Link
US (1) US2188671A (hu)
FR (1) FR852274A (hu)
GB (1) GB524340A (hu)
NL (1) NL55159C (hu)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE479415A (hu) * 1945-06-02
US2592738A (en) * 1945-09-19 1952-04-15 Us Navy Electronically controlled low impedance phase shifting device
US2567824A (en) * 1947-03-18 1951-09-11 Bell Telephone Labor Inc Automatic gain control
NL105186C (hu) * 1958-12-12
US3062994A (en) * 1960-01-19 1962-11-06 Gilbert & Barker Mfg Co Electronic level sensing servosystem

Also Published As

Publication number Publication date
US2188671A (en) 1940-01-30
NL55159C (hu) 1943-04-15
FR852274A (fr) 1940-01-27

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