FR1204039A - Electronic tube to visually indicate an electrical quantity - Google Patents

Electronic tube to visually indicate an electrical quantity

Info

Publication number
FR1204039A
FR1204039A FR1204039DA FR1204039A FR 1204039 A FR1204039 A FR 1204039A FR 1204039D A FR1204039D A FR 1204039DA FR 1204039 A FR1204039 A FR 1204039A
Authority
FR
France
Prior art keywords
electrical quantity
visually indicate
electronic tube
electronic
tube
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
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR1204039A publication Critical patent/FR1204039A/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
FR1204039D 1957-10-04 1958-10-03 Electronic tube to visually indicate an electrical quantity Expired FR1204039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL221345 1957-10-04

Publications (1)

Publication Number Publication Date
FR1204039A true FR1204039A (en) 1960-01-22

Family

ID=19750998

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1204039D Expired FR1204039A (en) 1957-10-04 1958-10-03 Electronic tube to visually indicate an electrical quantity

Country Status (6)

Country Link
US (1) US2956194A (en)
CH (1) CH362759A (en)
DE (1) DE1820410U (en)
FR (1) FR1204039A (en)
GB (1) GB889832A (en)
NL (1) NL99123C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206404A (en) * 1976-10-14 1980-06-03 Wagner Electric Corporation Vacuum fluorescent indicator
US4301389A (en) * 1979-12-12 1981-11-17 International Business Machines Corp. Multiple beam cathode ray tube with apertured cathode and control grid
JPH0640474B2 (en) * 1985-07-08 1994-05-25 伊勢電子工業株式会社 Display tube for light source
CN103888732B (en) * 2014-03-25 2017-11-10 中国矿业大学(北京) A kind of simplex and recognition methods based on mine lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL41801C (en) * 1934-07-25
US2243408A (en) * 1938-05-12 1941-05-27 Rca Corp Visual tuning indicator

Also Published As

Publication number Publication date
DE1820410U (en) 1960-10-27
GB889832A (en) 1962-02-21
CH362759A (en) 1962-06-30
NL99123C (en)
US2956194A (en) 1960-10-11

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