GB659067A - Improved thermionic valve amplifying circuit - Google Patents

Improved thermionic valve amplifying circuit

Info

Publication number
GB659067A
GB659067A GB3077847A GB3077847A GB659067A GB 659067 A GB659067 A GB 659067A GB 3077847 A GB3077847 A GB 3077847A GB 3077847 A GB3077847 A GB 3077847A GB 659067 A GB659067 A GB 659067A
Authority
GB
United Kingdom
Prior art keywords
amplifier
input
voltage
resistance
screen
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
GB3077847A
Inventor
David Whitehead Boston
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.)
BRITISH ACOUSTIC FILMS Ltd
Original Assignee
BRITISH ACOUSTIC FILMS Ltd
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 BRITISH ACOUSTIC FILMS Ltd filed Critical BRITISH ACOUSTIC FILMS Ltd
Priority to GB3077847A priority Critical patent/GB659067A/en
Publication of GB659067A publication Critical patent/GB659067A/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
    • H03F1/34—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

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

Abstract

659,067. Valve amplifying circuits. BRITISH ACOUSTIC FILMS, Ltd. Nov. 20, 1947, No. 30778. [Class 40 (vi)] The capacity effect of the screened input to a multistage thermionic amplifier is reduced by connecting the screen to a point in the amplifier where a voltage appears in phase with the input, and the current flowing is greater than that in the first stage. As shown, the input lead W of the first stage V1 of a three-stage amplifier has a screen S, the stray capacity of the lead to earth being shown at C2. The feed-back voltage developed across a resistance R1 in the cathode circuit of V1 together with the voltage across variable resistance R2, connected between the cathode end of the resistance R1 and a resistance R3 in the cathode circuit of the output valve V3 are applied to the screen S, and may be equal to the input voltage or greater than the input voltage in which case attenuation due to the stray capacity C2 may be compensated. A peak in the amplifier response at high frequencies may be obtained by producing a phase change in the amplifier as by condenser C3.
GB3077847A 1947-11-20 1947-11-20 Improved thermionic valve amplifying circuit Expired GB659067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3077847A GB659067A (en) 1947-11-20 1947-11-20 Improved thermionic valve amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3077847A GB659067A (en) 1947-11-20 1947-11-20 Improved thermionic valve amplifying circuit

Publications (1)

Publication Number Publication Date
GB659067A true GB659067A (en) 1951-10-17

Family

ID=10312994

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3077847A Expired GB659067A (en) 1947-11-20 1947-11-20 Improved thermionic valve amplifying circuit

Country Status (1)

Country Link
GB (1) GB659067A (en)

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