GB635480A - Improvements relating to thermionic valves - Google Patents

Improvements relating to thermionic valves

Info

Publication number
GB635480A
GB635480A GB2077046A GB2077046A GB635480A GB 635480 A GB635480 A GB 635480A GB 2077046 A GB2077046 A GB 2077046A GB 2077046 A GB2077046 A GB 2077046A GB 635480 A GB635480 A GB 635480A
Authority
GB
United Kingdom
Prior art keywords
electrodes
grid
cathode
mixer
posts
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
GB2077046A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB2077046A priority Critical patent/GB635480A/en
Publication of GB635480A publication Critical patent/GB635480A/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

  • Gas-Filled Discharge Tubes (AREA)

Abstract

635,480. Thermionic valves. ROBINSON, E. Y., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. July 11, 1946, No. 20770. [Class 39 (i)] A multiple thermionic valve in which all the lead-in wires pass through the base end comprises a mixer section and a local oscillator section located in the same envelope on either side of a common indirectly-heated cathode 1, Fig. 1, of flattened cross-section, the electrodes being supported between upper and lower insulating plates 14, e.g. of mica, and the two sets of electrodes being screened from one another by an electrostatic screen 11. The mixer section is a hexode and the oscillator section is a triode. A strap 8 connects grids 5, 7 of the mixer and a further strap (not shown) is provided between grids 2 and 6. The supporting posts of grid 4 are coplanar with the cathode 1 and the edges 12 of the screen 11 are bent so as to project between the cathode and the posts. The grid 2 of the triode is bulged towards the cathode 1 as shown so that its support posts 2a can be spaced away from posts 4a of grid 4. The whole electrode assembly is mounted within a can 10 secured to the plates 14 which engage the glass envelope of the device. Additional screening means may be provided between the lead-in wires at the base of the valve, and electrode posts at the top of the valve, which may be separate plates or extensions of the screen 11. The additional screens may screen the grid electrodes of the two electrode systems from one another, and/or the heater extremities or lead-in wires from some of the electrodes, or the input electrodes from the output electrodes. In a modification, the mixer-oscillator sets of electrodes are replaced by an amplifier combined with a double diode. The diode anodes are strips placed edge-on to the cathode. The Provisional Specification refers in addition to a mixeroscillator in which the mixer is a heptode, and to a triode, tetrode, or pentode amplifier combined with a diode or double diode. The grid wires and side rod supports form a ladder-like construction.
GB2077046A 1946-07-11 1946-07-11 Improvements relating to thermionic valves Expired GB635480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2077046A GB635480A (en) 1946-07-11 1946-07-11 Improvements relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2077046A GB635480A (en) 1946-07-11 1946-07-11 Improvements relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB635480A true GB635480A (en) 1950-04-12

Family

ID=10151379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2077046A Expired GB635480A (en) 1946-07-11 1946-07-11 Improvements relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB635480A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950945C (en) * 1940-07-23 1956-10-18 Lorenz C Ag Voltage indicator tubes, in particular tuning indicator tubes for radio equipment, with a display system and a further, independent electrode system for other purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950945C (en) * 1940-07-23 1956-10-18 Lorenz C Ag Voltage indicator tubes, in particular tuning indicator tubes for radio equipment, with a display system and a further, independent electrode system for other purposes

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