GB500459A - Improvements in ionic relay tubes - Google Patents

Improvements in ionic relay tubes

Info

Publication number
GB500459A
GB500459A GB3712/38A GB371238A GB500459A GB 500459 A GB500459 A GB 500459A GB 3712/38 A GB3712/38 A GB 3712/38A GB 371238 A GB371238 A GB 371238A GB 500459 A GB500459 A GB 500459A
Authority
GB
United Kingdom
Prior art keywords
cathode
grid
feb
cathodic
spacing
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
GB3712/38A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB500459A publication Critical patent/GB500459A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/50—Thermionic-cathode tubes
    • H01J17/52—Thermionic-cathode tubes with one cathode and one anode
    • H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
    • H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control

Landscapes

  • Gas-Filled Discharge Tubes (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Catching Or Destruction (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Lasers (AREA)

Abstract

500,459. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS'GLOEILAMPENFABRIEKEN. Feb. 5, 1938, No. 3712. Convention date, Feb. 8, 1937. Drawings to Specification. [Class 39 (i)] An ionic relay comprises an incandescent cathode and a control grid which can extinguish a discharge current of 0À2 amps., com. pletely separates the anode from the cathode, has a spacing not exceeding 0À4 mm., and is arranged from the cathode at a distance which is greater than the normal cathodic space but is small enough for the cathodic dark space to fill the gap between the grid and cathode. The Specification contains numerical examples of gas pressure, electrode spacing and of the grid apertures; the filling may consist of argon. The tube may comprise an indirectlyheated cathode, a grid which is supported on the cathode by insulating rings, and two anodes.
GB3712/38A 1937-02-09 1938-02-05 Improvements in ionic relay tubes Expired GB500459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN40353D DE730148C (en) 1937-02-09 1937-02-09 Ion relay tubes

Publications (1)

Publication Number Publication Date
GB500459A true GB500459A (en) 1939-02-09

Family

ID=25759287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3712/38A Expired GB500459A (en) 1937-02-09 1938-02-05 Improvements in ionic relay tubes

Country Status (7)

Country Link
US (1) US2220089A (en)
BE (1) BE426216A (en)
CH (1) CH202955A (en)
DE (1) DE730148C (en)
FR (1) FR833343A (en)
GB (1) GB500459A (en)
NL (1) NL51718C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975319A (en) * 1951-03-06 1961-03-14 Tesla Np Tacttron

Also Published As

Publication number Publication date
NL51718C (en) 1941-12-15
CH202955A (en) 1939-02-15
BE426216A (en) 1938-03-31
DE730148C (en) 1943-01-07
US2220089A (en) 1940-11-05
FR833343A (en) 1938-10-19

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