GB649786A - Improvements in or relating to circuit arrangements for amplifying and separating two or more oscillations - Google Patents

Improvements in or relating to circuit arrangements for amplifying and separating two or more oscillations

Info

Publication number
GB649786A
GB649786A GB35181/47A GB3518147A GB649786A GB 649786 A GB649786 A GB 649786A GB 35181/47 A GB35181/47 A GB 35181/47A GB 3518147 A GB3518147 A GB 3518147A GB 649786 A GB649786 A GB 649786A
Authority
GB
United Kingdom
Prior art keywords
oscillations
envelope
anode
valve
grid
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
GB35181/47A
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 GB649786A publication Critical patent/GB649786A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
    • H01J43/025—Circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes

Abstract

649,786. Diplex radio signalling ; superheterodyne receivers. PHILIPS ELECTRICAL, Ltd. Dec. 31, 1947, No. 35181. Convention date, Oct. 10, 1939. [Class 40 (v)] [Also in Group XL (a)] The invention relates to circuits for separating two or more oscillations applied to the grid 3 of a valve (for example the sound and vision signals in a television receiver) in which the two oscillations are derived by selective circuits 18 and 12 connected respectively to the anode 6 and one or more secondary emitting electrodes 5. According to the invention the valve has an anode in the form of a plate located outside the path of the primary electrons, and a suction grid 36 parallel to and in front of each of the secondary emitting electrodes, the latter being connected to the cathode either inside or outside the envelope through a low impedance 40 and either inside the envelope through a resistance or choke to the anode or outside the envelope to a high positive potential. The valve may operate in addition as a frequency changer, in which case local oscillations are also applied to the grid. The Specification as open to inspection under Sect. 91 also comprises further subject-matter described in Specification 545,803. This subject-matter does not appear in the Specification as accepted.
GB35181/47A 1939-10-10 1947-12-31 Improvements in or relating to circuit arrangements for amplifying and separating two or more oscillations Expired GB649786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL649786X 1939-10-10

Publications (1)

Publication Number Publication Date
GB649786A true GB649786A (en) 1951-01-31

Family

ID=19792024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35181/47A Expired GB649786A (en) 1939-10-10 1947-12-31 Improvements in or relating to circuit arrangements for amplifying and separating two or more oscillations

Country Status (4)

Country Link
US (1) US2273546A (en)
BE (1) BE440540A (en)
FR (1) FR873963A (en)
GB (1) GB649786A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464095A (en) * 1944-03-25
US2615138A (en) * 1948-10-30 1952-10-21 Rca Corp Beam type electron tube
US2675431A (en) * 1949-08-18 1954-04-13 Nat Union Radio Corp Transit time compensated multiplier tube
US2762916A (en) * 1950-07-13 1956-09-11 Hartford Nat Bank & Trust Co Device comprising an electric discharge tube having a concentrated electron beam
NL86332C (en) * 1950-11-27
US2975316A (en) * 1958-01-17 1961-03-14 Rca Corp Beam deflection type electron discharge device

Also Published As

Publication number Publication date
BE440540A (en) 1941-03-31
FR873963A (en) 1942-07-24
US2273546A (en) 1942-02-17

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