GB543580A - Improvements in or relating to circuit arrangements of the type comprising a thermionic valve for combining electrical oscillations - Google Patents

Improvements in or relating to circuit arrangements of the type comprising a thermionic valve for combining electrical oscillations

Info

Publication number
GB543580A
GB543580A GB11524/40A GB1152440A GB543580A GB 543580 A GB543580 A GB 543580A GB 11524/40 A GB11524/40 A GB 11524/40A GB 1152440 A GB1152440 A GB 1152440A GB 543580 A GB543580 A GB 543580A
Authority
GB
United Kingdom
Prior art keywords
grid
divided
pull
push
cathode
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
GB11524/40A
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 GB543580A publication Critical patent/GB543580A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03D7/08—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 the same two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

543,580. Thermionic valve circuits. PHILIPS LAMPS, Ltd. July 10, 1940, No. 11524. Convention date, July 13, 1939. [Classes 39 (i) and 40 (v)] In a mixing valve the control grid to which the locally generated oscillation is applied is more remote from the cathode than the signal control grid and the control grids are not separated by a screening grid but one of these grids is divided and connected in push-pull. Fig. 2 shows an arrangement in which the oscillator grid 3<SP>1</SP>, 311 is sub-divided and the output is taken from anode 41, 411 in push-pull. Alternatively the signal grid 1 may be sub-divided and the signal fed to the two halves in push-pull, Fig. 3 (not shown). The input control grid and the anode are each constituted by two halves arranged symmetrically with respect to the cathode and connected in push-pull. The divided grid may be built up from small rods which are sub-divided into two groups arranged symmetrically with respect to the cathode.
GB11524/40A 1939-07-13 1940-07-10 Improvements in or relating to circuit arrangements of the type comprising a thermionic valve for combining electrical oscillations Expired GB543580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL543580X 1939-07-13

Publications (1)

Publication Number Publication Date
GB543580A true GB543580A (en) 1942-03-04

Family

ID=19787290

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11524/40A Expired GB543580A (en) 1939-07-13 1940-07-10 Improvements in or relating to circuit arrangements of the type comprising a thermionic valve for combining electrical oscillations

Country Status (1)

Country Link
GB (1) GB543580A (en)

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