GB427360A - Improvements in or relating to thermionic valves - Google Patents

Improvements in or relating to thermionic valves

Info

Publication number
GB427360A
GB427360A GB623734A GB623734A GB427360A GB 427360 A GB427360 A GB 427360A GB 623734 A GB623734 A GB 623734A GB 623734 A GB623734 A GB 623734A GB 427360 A GB427360 A GB 427360A
Authority
GB
United Kingdom
Prior art keywords
anode
control grid
main anode
grid
circuit
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
GB623734A
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.)
JEROME CONRAD SMITH
Original Assignee
JEROME CONRAD SMITH
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 JEROME CONRAD SMITH filed Critical JEROME CONRAD SMITH
Priority to GB623734A priority Critical patent/GB427360A/en
Publication of GB427360A publication Critical patent/GB427360A/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

  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

427,360. Thermionic valves ; circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Smith, J. C. ; 4618, Lafayette Avenue, Merchantville, New Jersey, U.S.A.) Feb. 26, 1934, No. 6237. [Classes 39 (i) and 40 (v)] A valve comprises screening means screening the main anode from an auxiliary anode and from the control grid, and adapted upon variations of the potential of the screening means to vary the mutual conductance between the control grid and main anode whilst producing only a negligible change in the mutual conductance between the control grid and the auxiliary anode. The screening means may be located clear of the path between the cathode and the main anode. In one form, Fig. 1, a valve comprises a cathode 8, a control grid 10 and a main anode 13 and auxiliary anode 12. Either anode may be made of mesh or of sheet-metal. The screening means 19 comprises a grid structure 20, an outer screen structure 21 and a connecting perforated plate 22. The grid portion 20 is closed by a cap 23. The valve may be connected in circuit as shown in Fig. 2 in which a signal input circuit 32 is connected to the control grid 26, and an output circuit 33 to the main anode 27. The auxiliary anode 28 is connected to a circuit including a coupling coil 36 and a high resistance 38 maintaining constant current. The screen 29 is connected to a variable tap 39 so that its grid portion 30 alters the mutual conductance of the main anode circuit. In a modification, the input circuit is connected to a second control grid interposed between the screen portion 30 and the main anode ; a second screen is then interposed between this control grid and the main anode and is connected to the screen structure 29. Reference has been directed by the Comptroller to Specification 408,328.
GB623734A 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves Expired GB427360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB623734A GB427360A (en) 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB623734A GB427360A (en) 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB427360A true GB427360A (en) 1935-04-23

Family

ID=9810892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB623734A Expired GB427360A (en) 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB427360A (en)

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