GB679176A - Improvements in or relating to discharge tubes for use in frequency-demodulation - Google Patents

Improvements in or relating to discharge tubes for use in frequency-demodulation

Info

Publication number
GB679176A
GB679176A GB22915/48A GB2291548A GB679176A GB 679176 A GB679176 A GB 679176A GB 22915/48 A GB22915/48 A GB 22915/48A GB 2291548 A GB2291548 A GB 2291548A GB 679176 A GB679176 A GB 679176A
Authority
GB
United Kingdom
Prior art keywords
grid
cathode
grids
control
coated
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
GB22915/48A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics 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, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB679176A publication Critical patent/GB679176A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/02—Electron-emitting electrodes; Cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)
GB22915/48A 1947-09-03 1948-08-31 Improvements in or relating to discharge tubes for use in frequency-demodulation Expired GB679176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL266765X 1947-09-03

Publications (1)

Publication Number Publication Date
GB679176A true GB679176A (en) 1952-09-17

Family

ID=19781765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22915/48A Expired GB679176A (en) 1947-09-03 1948-08-31 Improvements in or relating to discharge tubes for use in frequency-demodulation

Country Status (7)

Country Link
US (1) US2760067A (enrdf_load_stackoverflow)
BE (1) BE484647A (enrdf_load_stackoverflow)
CH (1) CH266765A (enrdf_load_stackoverflow)
DE (1) DE826760C (enrdf_load_stackoverflow)
FR (1) FR988495A (enrdf_load_stackoverflow)
GB (1) GB679176A (enrdf_load_stackoverflow)
NL (1) NL71107C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969436C (de) * 1951-04-26 1958-06-04 Lorenz C Ag Anordnung zur Demodulation frequenz- oder phasenmodulierter Schwingungen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086271A (en) * 1934-07-04 1937-07-06 Telefunken Gmbh Electron discharge device
NL45032C (enrdf_load_stackoverflow) * 1934-12-27
NL46575C (enrdf_load_stackoverflow) * 1935-01-31
US2090218A (en) * 1935-06-25 1937-08-17 Hygrade Sylvania Corp Electron discharge device
BE426298A (enrdf_load_stackoverflow) * 1937-02-12
US2286337A (en) * 1937-11-27 1942-06-16 Telefunken Gmbh Negative feedback circuit
US2228980A (en) * 1938-09-27 1941-01-14 Telefunken Gmbh Electron discharge device
US2235498A (en) * 1940-01-11 1941-03-18 Rca Corp Electron discharge device
BE469561A (enrdf_load_stackoverflow) * 1942-05-06
US2379764A (en) * 1942-06-06 1945-07-03 Rca Corp Frequency modulation detection
US2441254A (en) * 1945-08-04 1948-05-11 Remco Electronic Inc Symmetrical space charge tube
US2460062A (en) * 1945-11-23 1949-01-25 Philco Corp Grid controlled electron tube

Also Published As

Publication number Publication date
CH266765A (de) 1950-02-15
US2760067A (en) 1956-08-21
BE484647A (enrdf_load_stackoverflow)
FR988495A (fr) 1951-08-28
NL71107C (enrdf_load_stackoverflow)
DE826760C (de) 1952-01-03

Similar Documents

Publication Publication Date Title
GB797964A (en) Improvements in or relating to electric discharge valves
GB679176A (en) Improvements in or relating to discharge tubes for use in frequency-demodulation
GB981743A (en) Improvements in electron guns
GB730920A (en) Improvements in or relating to high-vacuum electric discharge tubes of the kind comprising cold electrodes
GB917686A (en) High efficiency triode vacuum tube
US2072637A (en) Electron discharge tube
GB630710A (en) Improvements in or relating to magnetrons
US2679613A (en) One-cavity resnatron
US2138896A (en) Negative resistance
US2533750A (en) High-gain amplifier tube
GB1076313A (en) Improvements in electron tube assembly having an incorporated mode suppressor
US2324776A (en) Vacuum tube
GB714528A (en) Improvements in or relating to circuits for transforming the frequency of high-frequency oscillations
GB803709A (en) Improvements relating to velocity-modulated electron discharge devices
SU1072145A1 (ru) СВЧ-усилитель
GB650560A (en) Grid-controlled gaseous electron discharge device
GB923007A (en) High power electron discharge device
GB665285A (en) Improvements in or relating to frequency-changing circuits for decimetre and centimetre waves
GB655308A (en) Improvements in or relating to electric discharge tubes and to electronic amplifiersand oscillation-generators
GB922537A (en) Improvements in or relating to devices comprising a cathode-ray tube
US2987648A (en) Electron gun
GB710462A (en) Improvements in or relating to electric discharge tubes for use at very high radio frequencies
GB1352382A (en) Electron beam generator
GB487628A (en) Improvements in electrical circuits for frequency changing
GB1172528A (en) Improvements in or relating to Flash X-Ray Generation Methods and Apparatus