GB489289A - Improvements in or relating to thermionic amplifiers - Google Patents

Improvements in or relating to thermionic amplifiers

Info

Publication number
GB489289A
GB489289A GB1957/37A GB195737A GB489289A GB 489289 A GB489289 A GB 489289A GB 1957/37 A GB1957/37 A GB 1957/37A GB 195737 A GB195737 A GB 195737A GB 489289 A GB489289 A GB 489289A
Authority
GB
United Kingdom
Prior art keywords
grids
input circuit
leads
input
relating
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
GB1957/37A
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
Priority claimed from GB6814/37A external-priority patent/GB491803A/en
Publication of GB489289A publication Critical patent/GB489289A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
    • 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
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/22—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only

Landscapes

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

Abstract

489,289. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and STRONG, C. E. Jan. 22, 1937, No. 1957. [Class 40 (v)] In an amplifier the input circuit is arranged in series with the output circuit so that the load current passes through the input circuit and sets up a voltage giving negative feed-back. The Figure shows a push-pull tuned arrangement in which the grids are grounded and the input is applied between the cathodes. A coil 5 is provided, as shown, to give an additional feed-back in a positive sense partially to compensate for the reverse feedback. The filaments are fed by double wound chokes 6, 7 and the inductance of the leads connecting the grids to ground may be neutralized for any given frequency by adjustment of condensers inserted in these leads.
GB1957/37A 1937-01-22 1937-01-22 Improvements in or relating to thermionic amplifiers Expired GB489289A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB238067X 1937-01-22
GB6814/37A GB491803A (en) 1937-01-22 1937-03-08 Improvements in or relating to thermionic amplifiers

Publications (1)

Publication Number Publication Date
GB489289A true GB489289A (en) 1938-07-22

Family

ID=32071222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1957/37A Expired GB489289A (en) 1937-01-22 1937-01-22 Improvements in or relating to thermionic amplifiers

Country Status (5)

Country Link
US (2) US2213871A (en)
BE (1) BE425863A (en)
CH (1) CH238067A (en)
FR (1) FR832354A (en)
GB (1) GB489289A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750450A (en) * 1951-04-20 1956-06-12 Rca Corp Series connected totem-triode amplifiers
US2692919A (en) * 1951-06-11 1954-10-26 Rca Corp Stabilized driven grounded grid amplifier circuits
US2756283A (en) * 1951-11-13 1956-07-24 Rca Corp Cathode input amplifiers
US2795694A (en) * 1954-09-27 1957-06-11 Standard Coil Prod Co Inc Cascode amplifier with signal and a. g. c. voltages applied to different stages

Also Published As

Publication number Publication date
CH238067A (en) 1945-06-15
BE425863A (en)
US2241892A (en) 1941-05-13
FR832354A (en) 1938-09-26
US2213871A (en) 1940-09-03

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