GB288965A - Ionic valve with two anodes and two grids - Google Patents

Ionic valve with two anodes and two grids

Info

Publication number
GB288965A
GB288965A GB5769/28A GB576928A GB288965A GB 288965 A GB288965 A GB 288965A GB 5769/28 A GB5769/28 A GB 5769/28A GB 576928 A GB576928 A GB 576928A GB 288965 A GB288965 A GB 288965A
Authority
GB
United Kingdom
Prior art keywords
grid
anode
anodes
grids
current
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
GB5769/28A
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.)
GRAMMONT ETS
Original Assignee
GRAMMONT ETS
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 GRAMMONT ETS filed Critical GRAMMONT ETS
Publication of GB288965A publication Critical patent/GB288965A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/003—Tubes with plural electrode systems

Landscapes

  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

288,965. Soc. Anon. des Etablissements Industriels de E. C. Grammont et de A. Grammont. April 16, 1929, [Convention date]. Vaccum tubes. - Thermionic valves comprise a single filament 1, two anodes 4, 5 concentric around the filament and in alignment and two concentric helical grids 6, 7 of different diameters and overlapping so that one or both grids control the currents to both anodes, no connection existing within the tube between the electrodes. The valves may be used in superheterodyne circuits. Each grid may extend as shown under the whole of one anode and part of the other anode so that the current to each anode is mainly controlled by one grid but is also controlled to a smaller extent by the other grid, the extent of control by each grid depending on the number of turns of the grid within the anode. In a modification, one grid controls the current to one anode only. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the current to each of the anodes 4, 5 is controlled by one grid only, the two grids being of equal diameter and coaxial, each within the corresponding anode, and refers to the application of the valves to amplifying currents in several circuits in signalling. This subject-matter does not appear in the Specificaton as accepted.
GB5769/28A 1927-04-16 1928-02-23 Ionic valve with two anodes and two grids Expired GB288965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR288965X 1927-04-16

Publications (1)

Publication Number Publication Date
GB288965A true GB288965A (en) 1929-01-24

Family

ID=8887528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5769/28A Expired GB288965A (en) 1927-04-16 1928-02-23 Ionic valve with two anodes and two grids

Country Status (1)

Country Link
GB (1) GB288965A (en)

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