GB732567A - Improvements in or relating to thermionic valve amplifying circuits - Google Patents

Improvements in or relating to thermionic valve amplifying circuits

Info

Publication number
GB732567A
GB732567A GB27478/52A GB2747852A GB732567A GB 732567 A GB732567 A GB 732567A GB 27478/52 A GB27478/52 A GB 27478/52A GB 2747852 A GB2747852 A GB 2747852A GB 732567 A GB732567 A GB 732567A
Authority
GB
United Kingdom
Prior art keywords
grid
valves
resistors
valve
bias
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
GB27478/52A
Inventor
George Alexander Dodd
John Boura
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 Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
British Telecommunications PLC
British Telecommunications Research 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
Priority to NL82192D priority Critical patent/NL82192C/xx
Priority to NLAANVRAGE7505447,A priority patent/NL182365B/en
Application filed by British Telecommunications PLC, British Telecommunications Research Ltd filed Critical British Telecommunications PLC
Priority to GB27478/52A priority patent/GB732567A/en
Priority to US388738A priority patent/US2782264A/en
Publication of GB732567A publication Critical patent/GB732567A/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
    • 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H03F1/542—Replacing by standby devices

Landscapes

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

Abstract

732,567. Valve amplifying circuits. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Oct. 5, 1953 [Oct. 31, 1952], No. 27478/52. Class 40 (6). In a wide-band amplifier comprising a pair of valves V1, V2 with inputs and outputs connected in parallel, the outputs being connected together at the succeeding stage; non- linear, e.g. rectifier elements W1, W2 respectively are connected in the grid leads and the biasing arrangements are such that in the event of a short circuit between grid and cathode of one of the valves, the associated non- linear element becomes of high impedance, so that the input to the other valve is still effective. The valves are provided with individual bias resistors R5, R6 respectively and also with two resistors R1, R4 common to both cathode circuits, grid leaks R2, R3 being of high value and returned to the negative line, while the secondary of the input transformer T1 is returned to the common point of resistors R1, R4. In normal operation the elements W1, W2 are biased to be conductive by the potential drop across resistor R1 ; a grid-tocathode short in either valve, however, produces a bias of reverse sign across the corresponding element W1 or W2, since the bias in question is then obtained from resistor R4.
GB27478/52A 1952-10-31 1952-10-31 Improvements in or relating to thermionic valve amplifying circuits Expired GB732567A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL82192D NL82192C (en) 1952-10-31
NLAANVRAGE7505447,A NL182365B (en) 1952-10-31 DEVICE FOR FAST AUTOMATIC COMPARISON OF TWO CARTRIDGES, ESPECIALLY FOR COMPARING TWO FINGERPRINTS.
GB27478/52A GB732567A (en) 1952-10-31 1952-10-31 Improvements in or relating to thermionic valve amplifying circuits
US388738A US2782264A (en) 1952-10-31 1953-10-28 Thermionic valve amplifying circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27478/52A GB732567A (en) 1952-10-31 1952-10-31 Improvements in or relating to thermionic valve amplifying circuits

Publications (1)

Publication Number Publication Date
GB732567A true GB732567A (en) 1955-06-29

Family

ID=10260247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27478/52A Expired GB732567A (en) 1952-10-31 1952-10-31 Improvements in or relating to thermionic valve amplifying circuits

Country Status (3)

Country Link
US (1) US2782264A (en)
GB (1) GB732567A (en)
NL (2) NL82192C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929029A (en) * 1955-10-11 1960-03-15 Monroe Calculating Machine Amplitude discriminative amplifier
CN111316553B (en) * 2017-11-15 2023-09-29 三菱电机株式会社 Rectifier and rectifying antenna device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490045A (en) * 1948-06-11 1949-12-06 Benjamin R Gardner Blanking system for locked sweeps in panoramic systems
NL155224B (en) * 1950-05-17 Happich Gmbh Gebr PROFILE LIST FOR VEHICLE CAROSSERIES.

Also Published As

Publication number Publication date
NL182365B (en)
NL82192C (en)
US2782264A (en) 1957-02-19

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