GB165217A - Improvements in thermionic devices - Google Patents

Improvements in thermionic devices

Info

Publication number
GB165217A
GB165217A GB8683/20A GB868320A GB165217A GB 165217 A GB165217 A GB 165217A GB 8683/20 A GB8683/20 A GB 8683/20A GB 868320 A GB868320 A GB 868320A GB 165217 A GB165217 A GB 165217A
Authority
GB
United Kingdom
Prior art keywords
grid
winding
outer helix
current
pole
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
GB8683/20A
Inventor
William Alfred Edward Quilter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8683/20A priority Critical patent/GB165217A/en
Priority to US189616A priority patent/US1610316A/en
Publication of GB165217A publication Critical patent/GB165217A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/08—Tubes with a single discharge path having electrostatic control means only with movable electrode or electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/38—Control electrodes, e.g. grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes

Landscapes

  • Magnetically Actuated Valves (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

165,217. Quilter, W. A. E. March 24, 1920. Vacuum tubes.-The grid of a thermionic valve is formed in two parts relatively movable one to the other, so that the effective apertures of the grid may be varied. As shown, the grid consists of two coaxial wire helices C, D of the same pitch, the inner one D being fixed, and the outer one C mounted between bearings B, E and carrying a soft iron pole-piece H adjacent to a fixed ring-shaped core O, which is provided with a gap, and is energized by a winding K outside the bulb, so that the position of the pole H and the outer helix is determined by the strength of the current in the winding K. The outer helix is controlled by a spring. In a modification the outer helix is connected with a hot wire through which current. is passed.
GB8683/20A 1920-03-24 1920-03-24 Improvements in thermionic devices Expired GB165217A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8683/20A GB165217A (en) 1920-03-24 1920-03-24 Improvements in thermionic devices
US189616A US1610316A (en) 1920-03-24 1921-02-26 Thermionic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8683/20A GB165217A (en) 1920-03-24 1920-03-24 Improvements in thermionic devices

Publications (1)

Publication Number Publication Date
GB165217A true GB165217A (en) 1921-06-24

Family

ID=9857212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8683/20A Expired GB165217A (en) 1920-03-24 1920-03-24 Improvements in thermionic devices

Country Status (2)

Country Link
US (1) US1610316A (en)
GB (1) GB165217A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746369C (en) * 1937-06-03 1944-08-03 Gustav Walta Mechanically controlled electron tube

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416678A (en) * 1947-03-04 borsum
US2439942A (en) * 1944-11-20 1948-04-20 William C Marshall Movable electrode tube
US2446170A (en) * 1945-04-11 1948-08-03 Conley Burns Vacuum tube electronic switch
US2554272A (en) * 1945-10-31 1951-05-22 Westinghouse Electric Corp Split anode magnetron with tuning ring
US2490145A (en) * 1946-07-12 1949-12-06 S S Baker Electron tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746369C (en) * 1937-06-03 1944-08-03 Gustav Walta Mechanically controlled electron tube

Also Published As

Publication number Publication date
US1610316A (en) 1926-12-04

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