GB716543A - Improvements in or relating to thermionic valve amplifiers - Google Patents

Improvements in or relating to thermionic valve amplifiers

Info

Publication number
GB716543A
GB716543A GB2929250A GB2929250A GB716543A GB 716543 A GB716543 A GB 716543A GB 2929250 A GB2929250 A GB 2929250A GB 2929250 A GB2929250 A GB 2929250A GB 716543 A GB716543 A GB 716543A
Authority
GB
United Kingdom
Prior art keywords
resistance
capacitor
amplifier
stage
feedback
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
GB2929250A
Inventor
Victor James Cooper
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB2929250A priority Critical patent/GB716543A/en
Publication of GB716543A publication Critical patent/GB716543A/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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only

Landscapes

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

Abstract

716,543. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 7, 1951 [Nov. 29, 1950], No. 29292/50. Class 40 (6) Frequency-conscious feedback is used to extend the response of an amplifier to frequencies at which it would otherwise be falling. As applied to an amplifier, Fig. 2, comprising a first stage 1 resistance-capacity coupled to a cathode-follower 7, loss of gain at the higher frequencies caused by stray capacitance Cl in shunt to the load resistance R1 is compensated by feedback introduced by a capacitor C2 interconnecting the cathode circuits. As shown, negative feedback is applied to the stage 1 by means of a resistance RF between anode and grid of the valve. Another embodiment, Fig. 3, comprises a four stage amplifier in which negative feedback is applied over the first three stages V1-3 by means of a resistance RF interconnecting the cathode circuits of the first and third valves ; a capacitor CF in shunt with the resistance RF extends the highfrequency response. The overall response is extended by means of a capacitor Cx between the cathodes of the first and final stages.
GB2929250A 1950-11-29 1950-11-29 Improvements in or relating to thermionic valve amplifiers Expired GB716543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2929250A GB716543A (en) 1950-11-29 1950-11-29 Improvements in or relating to thermionic valve amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2929250A GB716543A (en) 1950-11-29 1950-11-29 Improvements in or relating to thermionic valve amplifiers

Publications (1)

Publication Number Publication Date
GB716543A true GB716543A (en) 1954-10-06

Family

ID=10289221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2929250A Expired GB716543A (en) 1950-11-29 1950-11-29 Improvements in or relating to thermionic valve amplifiers

Country Status (1)

Country Link
GB (1) GB716543A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112455A (en) * 1959-08-17 1963-11-26 Baldwin Piano Co Multi-stage amplifier with feedback
US3177377A (en) * 1961-11-29 1965-04-06 Avco Corp Automatic signal level discriminator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112455A (en) * 1959-08-17 1963-11-26 Baldwin Piano Co Multi-stage amplifier with feedback
US3177377A (en) * 1961-11-29 1965-04-06 Avco Corp Automatic signal level discriminator

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