GB824055A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB824055A
GB824055A GB22168/57A GB2216857A GB824055A GB 824055 A GB824055 A GB 824055A GB 22168/57 A GB22168/57 A GB 22168/57A GB 2216857 A GB2216857 A GB 2216857A GB 824055 A GB824055 A GB 824055A
Authority
GB
United Kingdom
Prior art keywords
wires
cathode
grid
parallel
variable
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
GB22168/57A
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories Inc
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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Publication of GB824055A publication Critical patent/GB824055A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00Vacuum tubes
    • H01J21/02Tubes with a single discharge path

Landscapes

  • Microwave Tubes (AREA)

Abstract

824,055. Thermionic valves. MACHLETT LABORATORIES Inc. July 12, 1957 [Aug. 13, 1956], No. 22168/57. Class 39(1). In a discharge tube in which a low amplification factor, i.e. between 3 and 10, is required, the grid has a plurality of parallel wires which are also parallel to the anode and cathode, the wires being spaced apart sufficiently widely to produce a variable mu across the cathode, and the effectively emitting portions of the cathode are restricted to the areas thereof where the mu is relatively low. In the arrangement of Fig. 2, both grid and cathode are formed of a series of separate wires, respectively 18 and 33. The spacing between the grid wires is considerably greater than the grid-cathode spacing, so that a variable mu effect between adjacent grid wires is obtained, Figs. 4 and 5 (not shown). As shown, the cathode wires 33 are located midway between the grid wires, where the mu is at a minimum, there being no emissive portion in the higher mu areas adjacent the grid wires. In the alternative arrangement of Fig. 6, the cathode 38 has emissive strips 41 lying between and parallel to the grid wires 40. The completed tube may be constructed as in Fig. 1 (not shown.)
GB22168/57A 1956-08-13 1957-07-12 Improvements in electron discharge devices Expired GB824055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US824055XA 1956-08-13 1956-08-13

Publications (1)

Publication Number Publication Date
GB824055A true GB824055A (en) 1959-11-25

Family

ID=22170993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22168/57A Expired GB824055A (en) 1956-08-13 1957-07-12 Improvements in electron discharge devices

Country Status (1)

Country Link
GB (1) GB824055A (en)

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