GB252079A - Improvements in or relating to four electrode valves and to means for obtaining highfrequency or low frequency magnification or rectification therewith - Google Patents

Improvements in or relating to four electrode valves and to means for obtaining highfrequency or low frequency magnification or rectification therewith

Info

Publication number
GB252079A
GB252079A GB4527/25A GB452725A GB252079A GB 252079 A GB252079 A GB 252079A GB 4527/25 A GB4527/25 A GB 4527/25A GB 452725 A GB452725 A GB 452725A GB 252079 A GB252079 A GB 252079A
Authority
GB
United Kingdom
Prior art keywords
grid
potential
inner grid
low frequency
less
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
GB4527/25A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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 filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB4527/25A priority Critical patent/GB252079A/en
Priority to US85355A priority patent/US1861232A/en
Publication of GB252079A publication Critical patent/GB252079A/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
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Pipeline Systems (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Catching Or Destruction (AREA)
  • Amplifiers (AREA)

Abstract

252,079. Marconi's Wireless Telegraph Co., Ltd., and Gill, E. W. B. Feb. 18, 1925. Vacuum tubes. - A four-electrode valve, such that the sum of the currents which the outer grid and anode can pass, is always less than the maximum electronic emission, has its anode and inner grid maintained at positive potentials, while the outer grid is at a low positive or negative potential, the arrangement being such that increase in inner grid potential produces a decrease in inner grid current. Potential variations of high or low frequency may be applied to the outer grid 2. A resistance 5 of 20,000 ohms may be interposed between the inner grid 4 and a 40-volt battery 6, or one of 50,000 ohms for a 70-volt supply, giving potential magnifications of the values 16 and 40 respectively. A condenser and grid leak may be placed in the outer grid circuit. A condenser 8 transmits the magnified potential variations to the grid of a triode 10. The range over which the negative resistance effect occurs may be varied by altering the filament current. The diameter of the outer grid is not less than 2¢ times that of the inner grid, and not greater than five times the diameter of the inner grid or greater than its length. If the grids are flat, the distance between the grids must be greater than the distance from the filament to the inner grid and less than the length of this grid.
GB4527/25A 1925-02-18 1925-02-18 Improvements in or relating to four electrode valves and to means for obtaining highfrequency or low frequency magnification or rectification therewith Expired GB252079A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4527/25A GB252079A (en) 1925-02-18 1925-02-18 Improvements in or relating to four electrode valves and to means for obtaining highfrequency or low frequency magnification or rectification therewith
US85355A US1861232A (en) 1925-02-18 1926-02-01 Four electrode valve and the operation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4527/25A GB252079A (en) 1925-02-18 1925-02-18 Improvements in or relating to four electrode valves and to means for obtaining highfrequency or low frequency magnification or rectification therewith

Publications (1)

Publication Number Publication Date
GB252079A true GB252079A (en) 1926-05-18

Family

ID=9778870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4527/25A Expired GB252079A (en) 1925-02-18 1925-02-18 Improvements in or relating to four electrode valves and to means for obtaining highfrequency or low frequency magnification or rectification therewith

Country Status (2)

Country Link
US (1) US1861232A (en)
GB (1) GB252079A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503700A (en) * 1947-09-30 1950-04-11 Rca Corp Phase detector

Also Published As

Publication number Publication date
US1861232A (en) 1932-05-31

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