GB568821A - Improvements in or relating to voltage indicators - Google Patents

Improvements in or relating to voltage indicators

Info

Publication number
GB568821A
GB568821A GB14104/43A GB1410443A GB568821A GB 568821 A GB568821 A GB 568821A GB 14104/43 A GB14104/43 A GB 14104/43A GB 1410443 A GB1410443 A GB 1410443A GB 568821 A GB568821 A GB 568821A
Authority
GB
United Kingdom
Prior art keywords
voltages
electrodes
shadow
anode
aug
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
GB14104/43A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB568821A publication Critical patent/GB568821A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

568,821. Discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 30, 1943, No. 14104. Convention date, Aug. 29, 1942. [Classes 39 (i) and 40 (v)] An arrangement for comparing two voltages comprises a cathode 2 and a fluorescent anode 1 with two deflecting electrodes 3 and 4, to each of which one of the two voltages is applied. The resulting pattern produced on the fluorescent anode indicates the relative strengths of these voltages. The voltages may be applied to the electrodes through rectifying diodes 20 and 21 and amplifiers 25 and 26. The electrodes 3 and 4 may be side by side, in which case a shadow is produced on the anode when voltages are applied to the electrodes and a bright line in the shadow area indicates by its position the difference between the voltages of the electrodes. If these are placed end to end, the application of voltages produces a shadow which is stepped at the edges unless the voltages are equal. In either case the state of the shadow will indicate when both electrodes have no voltage. Specification 545,577 is referred to.
GB14104/43A 1942-08-29 1943-08-30 Improvements in or relating to voltage indicators Expired GB568821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US456607A US2366320A (en) 1942-08-29 1942-08-29 Voltage indicator

Publications (1)

Publication Number Publication Date
GB568821A true GB568821A (en) 1945-04-23

Family

ID=23813442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14104/43A Expired GB568821A (en) 1942-08-29 1943-08-30 Improvements in or relating to voltage indicators

Country Status (2)

Country Link
US (1) US2366320A (en)
GB (1) GB568821A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734167A (en) * 1956-02-07 Testing device for cathode ray tubes
DE950946C (en) * 1940-07-23 1956-10-18 Lorenz C Ag Voltage comparison indicator tubes
DE1252326B (en) * 1940-07-23
US2422766A (en) * 1942-11-30 1947-06-24 Gen Motors Corp Peak transient meter
US2465041A (en) * 1942-12-12 1949-03-22 Svenska Elektronror Ab Electron discharge device
US2666164A (en) * 1948-09-29 1954-01-12 Hall Lab Inc Electronic conductivity meter
CH291029A (en) * 1949-09-09 1953-05-31 Siemens Ag Electron tubes with fluorescent screens, in particular for tuning display
DE1061910B (en) * 1952-03-20 1959-07-23 Standard Elektrik Lorenz Ag Voltage and voltage comparison indicator tubes
DE1021093B (en) * 1952-12-12 1957-12-19 Siemens Ag Tuning indicator tubes
DE1078699B (en) * 1956-09-29 1960-03-31 Standard Elektrik Lorenz Ag Voltage and voltage comparison indicator tubes
US3320463A (en) * 1962-07-23 1967-05-16 Gen Electric Electron discharge tube having an improved electrode mounting structure

Also Published As

Publication number Publication date
US2366320A (en) 1945-01-02

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