GB495242A - Electron discharge apparatus - Google Patents

Electron discharge apparatus

Info

Publication number
GB495242A
GB495242A GB2069/38A GB206938A GB495242A GB 495242 A GB495242 A GB 495242A GB 2069/38 A GB2069/38 A GB 2069/38A GB 206938 A GB206938 A GB 206938A GB 495242 A GB495242 A GB 495242A
Authority
GB
United Kingdom
Prior art keywords
pair
cathodes
anodes
units
grids
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
GB2069/38A
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 GB495242A publication Critical patent/GB495242A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/065—Devices for short wave tubes
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Amplifiers (AREA)

Abstract

495,242. Thermionic valves and valve circuits. STANDARD TELEPHONES & CABLES, Ltd. Jan. 21, 1938, No. 2069. Convention date, Feb. 26, 1937. [Classes 39 (i) and 40 (v)] An electron-discharge tube compriss a pair of spaced anodes 14, 15, Fig. 1, a pair of electrically connected control electrodes 25<1>, 26<2>, one respectively adjacent each anode, a second pair of electrically connected control electrodes 252, 261, one respectively adjacent each anode and four cathodes 18<1>, 18<2>, 19<1>, 19<2> each cooperatively associated with only one of the control electrodes and its associated anodes. The anodes are provided with recesses 16<1> in which are disposed the cathodes and grids associated therewith. Each grid comprises a plurality of U-shaped wires united to a metallic plate 27. Four triode units are thus formed having substantially equal inter-electrode capacities and impedances. The tube may be used as a push-pull amplifier, an input coil 32, Fig. 3, being connected to all the grids and an output coil 36 to the anodes. One end of each cathode is connected to earth by means of a common lead 24, all the cathodes being connected thereto within the valve. A two-way switch 40 is provided which serves to connect one or other of the diametrically opposite pairs of cathodes in series. By this means if one pair of units of the valve should break down, operation of the switch to its second position enables the other pair of units to be used. Inherent gridplate capacitances are automatically neutralized by the arrangement disclosed. The device may be used as an oscillator which may be crystal controlled or as a negative feed-back amplifier, only one pair of diagonally opposite cathodes being energized at a time. Alternatively, when used in an oscillator all the grids may be connected in parallel and all the four units work simultaneously.
GB2069/38A 1937-02-26 1938-01-21 Electron discharge apparatus Expired GB495242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US127899A US2163247A (en) 1937-02-26 1937-02-26 Electron discharge apparatus

Publications (1)

Publication Number Publication Date
GB495242A true GB495242A (en) 1938-11-09

Family

ID=22432530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2069/38A Expired GB495242A (en) 1937-02-26 1938-01-21 Electron discharge apparatus

Country Status (6)

Country Link
US (1) US2163247A (en)
BE (1) BE495242A (en)
DE (1) DE706668C (en)
FR (2) FR834005A (en)
GB (1) GB495242A (en)
NL (1) NL49225C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456579A (en) * 1942-10-30 1948-12-14 Rca Corp Electron discharge device for ultra high frequencies
US2423443A (en) * 1942-12-31 1947-07-08 Bell Telephone Labor Inc High power electronic discharge device for generating ultra high frequency radiations
US2437027A (en) * 1943-01-12 1948-03-02 John H Homrighous Time division multiplex communication system
US2533280A (en) * 1943-03-16 1950-12-12 Int Standard Electric Corp Multiunit vacuum tube
US5007135A (en) * 1990-06-18 1991-04-16 Robert Rigsby Plant growing receptacle
US5383302A (en) * 1992-10-08 1995-01-24 Hill; Ronald F. Apparatus and method for growing strongly-rooted trees, and preventing root damage to hardscapes

Also Published As

Publication number Publication date
DE706668C (en) 1941-05-31
US2163247A (en) 1939-06-20
NL49225C (en) 1940-09-16
FR834004A (en) 1938-11-09
FR834005A (en) 1938-11-09
BE495242A (en) 1950-08-16

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