GB494651A - Improvements in electron discharge devices used as voltage indicators - Google Patents

Improvements in electron discharge devices used as voltage indicators

Info

Publication number
GB494651A
GB494651A GB9553/38A GB955338A GB494651A GB 494651 A GB494651 A GB 494651A GB 9553/38 A GB9553/38 A GB 9553/38A GB 955338 A GB955338 A GB 955338A GB 494651 A GB494651 A GB 494651A
Authority
GB
United Kingdom
Prior art keywords
target
rods
triode
envelope
soot
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
GB9553/38A
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.)
ROGERS RADIO TUBES Ltd
Original Assignee
ROGERS RADIO TUBES 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 ROGERS RADIO TUBES Ltd filed Critical ROGERS RADIO TUBES Ltd
Publication of GB494651A publication Critical patent/GB494651A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/14—Magic-eye or analogous tuning indicators

Landscapes

  • Microwave Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

494,651. Electron tuning indicators; luminescent materials. ROGERS RADIO TUBES, Ltd. March 29, 1938, No. 9553. Convention date, June 22, 1937. [Class 39 (i)] [Also in Group XX] In an electron voltage or tuning indicator the target 17, which is bombarded by electrons from a target cathode 18 under control of vanes 23, has a layer of fluorescing material on soot ; the soot is formed on a nickel base by an acetylene flame and acts as the bedding medium for willemite which is sprayed on. A light shield 19 of carbonized nickel is placed so that the cathode is not visible through the transparent upper part of the envelope used for viewing the target. The control vanes are connected to the rods 11, 12, which support a triode, through ceramic plates held in place by metal locking bars 7, 8 ; a strap 25 connects the rods 12 to the triode anode 6, the rods 11 and 12 being connected together. A common heater is used for the two cathodes 18, 4. Mica plates 9, 10 on standards 13, 14 separate the triode and target sections of the envelope, the target being carried by a plate 15 from the standards 13, 14. A mica centring disc 16 for the electrodes engages the envelope wall.
GB9553/38A 1937-06-22 1938-03-29 Improvements in electron discharge devices used as voltage indicators Expired GB494651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US149559A US2105818A (en) 1937-06-22 1937-06-22 Voltage indicating electron discharge tube

Publications (1)

Publication Number Publication Date
GB494651A true GB494651A (en) 1938-10-28

Family

ID=22530834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9553/38A Expired GB494651A (en) 1937-06-22 1938-03-29 Improvements in electron discharge devices used as voltage indicators

Country Status (2)

Country Link
US (1) US2105818A (en)
GB (1) GB494651A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL78923C (en) * 1940-07-23
US2582203A (en) * 1946-11-02 1952-01-08 Hartford Nat Bank & Trust Co Electric discharge tube
NL82773C (en) * 1952-02-08
IT500096A (en) * 1952-03-20
BE519456A (en) * 1952-04-26

Also Published As

Publication number Publication date
US2105818A (en) 1938-01-18

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