GB629322A - Improvements in or relating to circuit-arrangements for indicating the frequency of electrical oscillations - Google Patents

Improvements in or relating to circuit-arrangements for indicating the frequency of electrical oscillations

Info

Publication number
GB629322A
GB629322A GB8097/47A GB809747A GB629322A GB 629322 A GB629322 A GB 629322A GB 8097/47 A GB8097/47 A GB 8097/47A GB 809747 A GB809747 A GB 809747A GB 629322 A GB629322 A GB 629322A
Authority
GB
United Kingdom
Prior art keywords
cathode
output
tuning
voltage
pentode
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
GB8097/47A
Other languages
English (en)
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB629322A publication Critical patent/GB629322A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Amplifiers (AREA)
GB8097/47A 1944-07-15 1947-03-25 Improvements in or relating to circuit-arrangements for indicating the frequency of electrical oscillations Expired GB629322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL250543X 1944-07-15

Publications (1)

Publication Number Publication Date
GB629322A true GB629322A (en) 1949-09-16

Family

ID=19781083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8097/47A Expired GB629322A (en) 1944-07-15 1947-03-25 Improvements in or relating to circuit-arrangements for indicating the frequency of electrical oscillations

Country Status (7)

Country Link
US (1) US2530847A (en:Method)
BE (1) BE466839A (en:Method)
CH (1) CH250543A (en:Method)
DE (1) DE806557C (en:Method)
FR (1) FR937993A (en:Method)
GB (1) GB629322A (en:Method)
NL (2) NL66622C (en:Method)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2194516A (en) * 1938-04-12 1940-03-26 Rca Corp Visual signal carrier indicator
US2214574A (en) * 1938-06-15 1940-09-10 Telefunken Gmbh Frequency discriminator network
DE698645C (de) * 1938-07-26 1940-11-14 Radiowerk Horny Akt Ges Schaltung eines Elektronenstrahlindikators
US2241145A (en) * 1938-12-24 1941-05-06 Stromberg Carlson Telephone Signaling system
US2286413A (en) * 1941-04-25 1942-06-16 Rca Corp Frequency modulation receiver tuning indicator circuits
BE475845A (en:Method) * 1943-02-08
US2379765A (en) * 1943-05-13 1945-07-03 Rca Corp Angle modulated wave resonance indicator

Also Published As

Publication number Publication date
DE806557C (de) 1951-06-14
US2530847A (en) 1950-11-21
NL66622C (en:Method)
BE466839A (en:Method)
NL118030B (en:Method)
CH250543A (de) 1947-08-31
FR937993A (fr) 1948-09-01

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