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GB548424A - Improvements in or relating to thermionic valve amplifiers - Google Patents

Improvements in or relating to thermionic valve amplifiers

Info

Publication number
GB548424A
GB548424A GB4613/41A GB461341A GB548424A GB 548424 A GB548424 A GB 548424A GB 4613/41 A GB4613/41 A GB 4613/41A GB 461341 A GB461341 A GB 461341A GB 548424 A GB548424 A GB 548424A
Authority
GB
United Kingdom
Prior art keywords
suppressor grid
capacity
valve
potential
anode
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
GB4613/41A
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
Priority to BE476622D priority Critical patent/BE476622A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB4613/41A priority patent/GB548424A/en
Priority to US435983A priority patent/US2416334A/en
Publication of GB548424A publication Critical patent/GB548424A/en
Priority to FR931784D priority patent/FR931784A/en
Priority to ES0177440A priority patent/ES177440A1/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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • 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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

548,424. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and LEVY, M. M. April 7, 1941, No. 4613. [Class 40 (v) ] The loss at high frequencies due to the anode to earth capacity of a pentode valve is reduced by reducing the effect of the part of this capacity contributed by the suppressor grid by connecting the suppressor grid to a point in the amplifier at approximately the anode alternating potential. Fig. 3 shows a pentode V1 in which the effect of the inherent capacity C1 is compensated by connecting the suppressor grid to the point P1 or P2 which is of requisite potential and connected to earth through an impedance which is low relative to that of the inherent capacity C3. If the point P1 is of higher potential than the anode overcompensation may be effected so that part of the capacity C2 is compensated and by adjustment of the phase the impedance may be made of any kind and either positive or negative. Fig. 5 shows an arrangement in which the suppressor grid of the valve V1 is connected to the cathode of V2 which is connected as a cathodefollower. The coupling of the suppressor grid of the valve V2 to the cathode of V3 includes the resistance condenser combination RS, KS, as shown, or may include a transformer. In an amplifier using feedback the necessary potential from this circuit may be applied to the suppressor grid. The valves may operate on non-linear portion of their characteristics when used for amplifying impulses.
GB4613/41A 1941-04-07 1941-04-07 Improvements in or relating to thermionic valve amplifiers Expired GB548424A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE476622D BE476622A (en) 1941-04-07
GB4613/41A GB548424A (en) 1941-04-07 1941-04-07 Improvements in or relating to thermionic valve amplifiers
US435983A US2416334A (en) 1941-04-07 1942-03-24 Thermionic valve amplifier
FR931784D FR931784A (en) 1941-04-07 1946-08-02 Improvements to amplifier assemblies involving the use of pentodes
ES0177440A ES177440A1 (en) 1941-04-07 1947-03-31 IMPROVEMENTS IN OR RELATED TO THERMO-VALVE AMPLIFIERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4613/41A GB548424A (en) 1941-04-07 1941-04-07 Improvements in or relating to thermionic valve amplifiers

Publications (1)

Publication Number Publication Date
GB548424A true GB548424A (en) 1942-10-09

Family

ID=9780468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4613/41A Expired GB548424A (en) 1941-04-07 1941-04-07 Improvements in or relating to thermionic valve amplifiers

Country Status (5)

Country Link
US (1) US2416334A (en)
BE (1) BE476622A (en)
ES (1) ES177440A1 (en)
FR (1) FR931784A (en)
GB (1) GB548424A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517863A (en) * 1944-10-12 1950-08-08 Darol K Froman Voltage supply circuit for vacuum tubes
BE471791A (en) * 1945-08-27
US2538487A (en) * 1946-12-31 1951-01-16 Volkers & Schaffer Inc Self-focusing, direct-coupled, even stage amplifier
US2934713A (en) * 1954-09-17 1960-04-26 Itt Anode-follower amplifier
US3061794A (en) * 1958-08-15 1962-10-30 Frank W Raucr Distortionless electrical amplifier

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2033274A (en) * 1933-04-07 1936-03-10 Bell Telephone Labor Inc Amplifier
NL45032C (en) * 1934-12-27
US2154327A (en) * 1936-07-03 1939-04-11 Philco Radio & Television Corp Signal amplifier
US2212215A (en) * 1938-07-14 1940-08-20 Fides Ges Fur Die Verwaltung Electron discharge device

Also Published As

Publication number Publication date
US2416334A (en) 1947-02-25
FR931784A (en) 1948-03-03
ES177440A1 (en) 1947-05-01
BE476622A (en)

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