GB501890A - Improvements in rectifiers for ultra-short waves - Google Patents

Improvements in rectifiers for ultra-short waves

Info

Publication number
GB501890A
GB501890A GB20194/38A GB2019438A GB501890A GB 501890 A GB501890 A GB 501890A GB 20194/38 A GB20194/38 A GB 20194/38A GB 2019438 A GB2019438 A GB 2019438A GB 501890 A GB501890 A GB 501890A
Authority
GB
United Kingdom
Prior art keywords
grid
anode
circuit
tuned
circuits
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
GB20194/38A
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
Publication of GB501890A publication Critical patent/GB501890A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/26—Demodulation of amplitude-modulated oscillations by means of transit-time tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
    • H03D1/16—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of discharge tubes
    • 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
    • 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
    • H03D7/20—Transference of modulation from one carrier to another, e.g. frequency-changing by means of transit-time tubes

Abstract

501,890. Valve circuits for wireless reception. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 7, 1938, No. 20194. Convention date, July 10, 1937. [Class 40 (v)] Ultra-short waves are rectified by applying them to the anode 3 of a valve having at least two grids, the anode being at negative or slightly-positive potential, one grid 5 being connected to the cathode through a circuit 11, 12 presenting a high-impedance to the rectified oscillations, and a second grid 4 between the first grid and the anode being positively biassed. The rectified signals may be taken off from resistance 11 through a coupling condenser 13 or may be amplified by elements 4 .. 6 and taken off from grid 4. The invention may be applied to the mixing tube of a superheterodyne receiver, Fig. 4, the signal and local oscillation frequencies being supplied through tuned circuits 16, 17, in the anode circuit, and a tuned circuit 18 tuned to the intermediate frequency being connected between grid 5 and the cathode. Alternatively, one of the circuits 16, 17 may be connected to grid 5 in series with circuit 18.
GB20194/38A 1937-07-10 1938-07-07 Improvements in rectifiers for ultra-short waves Expired GB501890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE501890X 1937-07-10

Publications (1)

Publication Number Publication Date
GB501890A true GB501890A (en) 1939-03-07

Family

ID=6545821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20194/38A Expired GB501890A (en) 1937-07-10 1938-07-07 Improvements in rectifiers for ultra-short waves

Country Status (5)

Country Link
US (1) US2246958A (en)
BE (1) BE429060A (en)
FR (1) FR840536A (en)
GB (1) GB501890A (en)
NL (1) NL54608C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE472309A (en) * 1944-09-02
US2629821A (en) * 1945-06-07 1953-02-24 La Verne R Philpott High-frequency signal translation circuit
US2904680A (en) * 1954-06-14 1959-09-15 Du Mont Allen B Lab Inc Retriggered direct coupled sweep circuit

Also Published As

Publication number Publication date
BE429060A (en)
NL54608C (en)
FR840536A (en) 1939-04-27
US2246958A (en) 1941-06-24

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