GB428294A - Improvements in or connected with electron discharge devices and circuit therefor - Google Patents

Improvements in or connected with electron discharge devices and circuit therefor

Info

Publication number
GB428294A
GB428294A GB31385/33A GB3138533A GB428294A GB 428294 A GB428294 A GB 428294A GB 31385/33 A GB31385/33 A GB 31385/33A GB 3138533 A GB3138533 A GB 3138533A GB 428294 A GB428294 A GB 428294A
Authority
GB
United Kingdom
Prior art keywords
resistance
control grids
nov
condenser
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
GB31385/33A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB428294A publication Critical patent/GB428294A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K27/00—AC commutator motors or generators having mechanical commutator
    • H02K27/04—AC commutator motors or generators having mechanical commutator having single-phase operation in series or shunt connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Electrotherapy Devices (AREA)

Abstract

428,294. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Demarest, C. S. ; 192, Unadilla Road, Ridgewood, New Jersey, and Holden, W. H. T.; 57, Lincoln Road, Brooklyn, New York, both in U.S.A.) Nov. 10, 1933, No. 31385. Convention date, Nov. 10, 1932. [Classes 39 (i) and 40 (v)] A pentode has two coplanar control grids 14, 15, Fig. 1. They are of the same size, and slightly staggered, and the leads are connected to caps G<1>, G<2>. The screen grid 13 and suppressor grid 12 are mounted between the control grids and the anode 11 ; the cathode 16 may be indirectly heated. An amplifier-detector circuit is shown in Fig. 3. The ends of the secondary of the input transformer 21 are connected with the control grids 14, 15 and the mid-point is connected with the cathode 16 through a resistance 23 shunted by a condenser 24, the reactance of the condenser being large compared with the resistance 23 for voice frequencies but negligible in comparison with the resistance for the carrier frequency. The carrier may be supplied locally by a generator 22. The Specification, as open to inspection under Sect. 91, comprises also the use of the tube as a diode, triode, or tetrode. This subject-matter does not appear in the Specification as accepted.
GB31385/33A 1932-11-10 1933-11-10 Improvements in or connected with electron discharge devices and circuit therefor Expired GB428294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US428294XA 1910-04-09 1910-04-09

Publications (1)

Publication Number Publication Date
GB428294A true GB428294A (en) 1935-05-10

Family

ID=21923965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31385/33A Expired GB428294A (en) 1932-11-10 1933-11-10 Improvements in or connected with electron discharge devices and circuit therefor

Country Status (2)

Country Link
FR (1) FR428294A (en)
GB (1) GB428294A (en)

Also Published As

Publication number Publication date
FR428294A (en) 1911-08-26

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