US2755412A - Electron valve - Google Patents

Electron valve Download PDF

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Publication number
US2755412A
US2755412A US283395A US28339552A US2755412A US 2755412 A US2755412 A US 2755412A US 283395 A US283395 A US 283395A US 28339552 A US28339552 A US 28339552A US 2755412 A US2755412 A US 2755412A
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United States
Prior art keywords
cathode
valve
electrode
electrodes
electron
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Expired - Lifetime
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US283395A
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English (en)
Inventor
Sternbeck Olaf
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting

Definitions

  • the present invention relates to an electron valve with revolving electron beam to be used especially as counting valve, that is to count electric impulses.
  • the electrodes su'r'ronnditfg the cathode are of two difierent types, on
  • one hand receiving electrodes arranged to receive the electron beam emitted by the cathode, and on the other hand control electrodes; for directing the electron beam to one, arbitrarily, of the receiving electrodes.
  • the receiving electrodes andt'he control electrodes surrounding the cylindric cathode are shapedasrails running parallel with thecathode the receiving electrodes and the control electrodes thei eby" alternating with each other the last mentioned electrodes havinga wider extent radially towards the cathode and having the part racing h'e cathode located closer to said cathode than the receiving electrodes.
  • a box comprising one or more receiving electrodes is thereby formed between adjacent control elect hes-r 'ev it at' ai l 'te' a ve b s a
  • Such i'. .s z t q l pti fi l l $ii dua m bf he valve can beconsiderably simplified if recei ng electrodes are connected witheach 0t er electrically si o" that each of them hasthe sa rie positive potential with regard to the cathode.
  • the control electrodes are used for controlling the electron beam by supplying one of them a lower voltage than the others, whereby the beam 5 is guidedinto a boit adjacent to said control electrode.
  • the electron beam can he made to revolve within the valve, i. e. automatically to perform a stepping movement from be)? to boat, by successively supplying tlie control electrodes following each otherwith such a low voltage. This can be done in several different manners, for ex: ample by feeding a multiphase voltage to the control electrodes", which i's knownearlier.
  • connection of the receiving electrodes can be arranged within the valve itself and the simplest manner is then to replace the r'eceiv'ing electrodes By a screen or metal, concentric with the cathode and located behind the control electrodes, seen from the cathode.
  • the stepping movement of the electron beam will naturally not be aflected thereby, but can be effected in the usual way.
  • Thee 'on vet-Ive according to'the invention is chiefly chara'cteriz'edin that it comprises acylindric cathode located centrally Within the valve envelope, a number of control electrodes coaxiallysurrounding said cathode, and a cylindric receiving electrode coaiiially encircling the cathode and the con'ttol electrodes
  • Each part the receivingl elec trode located in' a b'o'x between adjacent control lectfodes is provided with a hole thtong h which aptirtionof theelectron bearir emitted from the can penetrate, when it is steered into said boir, and light ac'orresponding pat-tot on the outside of the receivin'g' e
  • Fig. 3 shows a sim e embodiment of a valve according to the invention.
  • F g 4 shows avalve rwhere the position of the control electrodes in the valve has been changed.
  • Fig; 5 shows a valve further modified control electrodes.
  • Fig. 6A shows a horizontal and Fig; 6" a vertical section of a; valve according to the invention provided with at nescent screen.
  • FIG. 7 shows a horizontal section elnd Fig. 7A a side-view of a. valve with another kind of coat ing on the; lnminescent screen'; Fig. and Fig. 8Aand Figs. 9 and 9A separately show a si iew and a N of electrode systeinin other embodiments" of a valve according to the invention.
  • FIG. ion the drawing is shown a previously known electron valve of the magnetron type withnegative lllf teriial re istance, the athode not which is sump-tinned by a number of anodes 1- 8 arrangedalong a supposed cylindric surface coaxial with the'eathode.
  • the discharge space of the valve is penetrated by a constant magnetic field which is parallel with the axis of the cylindric' cathode and is symbolized by the indicated at 15.
  • the magnetic field is directed towards the plane of the figure.
  • n ne magnetic field s sufiicientIy strong man as indicated on thie figure, all the anodes 198 have the n voltage, the-battery 1d, practically no el e as cu rent; yvillno y from the cathode to the an he lectrons emitted by the cathode williriste atd circle 'onn'd said cathode in paths indicated by the designati n i2. Owing" to space enact thns for d electron cloud 12 willprevent further emission of elec-' trons from the cathode. 1
  • the device shown in Figs. 1 and 2 is suitably completed with a further electrode shaped as a cylinder surrounding the cathode 11 the anodes 1-8.
  • a further electrode shaped as a cylinder surrounding the cathode 11 the anodes 1-8.
  • Such a valve is shown in Fig. 3.
  • a hole thrtiiigh which the eleemati bein'i 12 mi find its way to the cylindric electrode 16, instead of to the nearest preceding anode as in Figs. 1 and 2, when the potential on one of the anodes 18 decreases.
  • the concentric electrode 16 which obviously functions as receiving electrode for the electron beam, is positive, anode voltage from the battery 17, the different anodes 1-8, which obviously function as control electrodes, will not take up any current worth mentioning owing to a voltage decrease on the respective subsequent anode. If however the voltage on the receiving electrode 16 decreases to the neighbourhood of the cathode potential, the electron current will, at isolated voltage decrease on one of the control electrodes 1-8, however be obliged to pass over to the nearest preceding control electrode. If the control electrodes are suitably connected to resistances, this quality can in a suitable connection be used to count impulses which are in a suitable manner provided between the cathode 11 and the receiving electrode 16.
  • the valve shown in Fig. 3 has a drawback, and that is that the variations in the potential of the cylindric receiv ing electrode 16 affect the electric field round the cathode and therewith the strength of the cathode current.
  • the control electrodes 1-8 should be shaped so as to have a wide extent in a peripheral direction towards the cathode, as is shown in Fig. 4.
  • the qualities of the valves are further favourably influenced if the mutual radial distance of the control electrodes 1-8 is constant.
  • Fig. 5 a valve is shown, in which the space existing between adjacent control electrodes has a constant width along the whole radial extent of said electrodes.
  • a counting valve having ten receiving boxes limited by control electrodes 1'-8 shaped as rails parallel with the cathode 11.
  • the valve is enclosed in a glass envelope 13 and provided with vacuum-tight inlets 20 for the different electrodes.
  • the cylindric receiving electrode 16 is provided with a number of holes in its upper part, one in front of each one of the boxes existing between adjacent control electrodes. Two of these holes 23 and 28 are shown in the side view of the valve comprised in Fig. 6.
  • a portion of the electron beam-not shown on the drawingwhen steered into the corresponding box, is capable of penetrating said hole, Whereafter it impinges on a cone-shaped screen 19 coated on the inside with a luminescent material.
  • a luminous patch on the cone-shaped screen 19 will plainly indicate in which box the electron beam is steered.
  • Fig. 7 shows a modified embodiment of the screen 19 itself.
  • This screen is not wholly coated with the luminescent material but only ten stripes of its surface are provided with such a coating. These stripes are in the figure indicated by 41-50 and are applied in a suitable manner in relation to the different holes 2130 on the receiving electrode 16. Due to the bending of the electron beam after it has issued from said holes under the influence of the magnetic field generated by the permanent magnet 31,'the said stripes do not lie in front of the corresponding holes but they are displaced or offset to one side.
  • the electron beam 12 is shown when steered into the box between the control electrodes 1 and 2, whereby part of the beam issues from said box by the corresponding hole in the receiving electrode 16 to meet the stripe 41, on which a patch with a diameter corresponding to the hole will plainly gleam to indicate that the beam is in the 'box between said control electrodes.
  • the holes in the receiving electrodes may have any arbitrary shape.
  • the screen shown in Fig. 7 is only partly coated with luminescent material.
  • Such spreading can also be prevented by dividing by means of partition walls the channel formed between the cone-shaped screen and the receiving electrode into a number of chambers corresponding to the number of boxes.
  • Such an embodiment is disclosed in the electrode system shown in Fig. 8, where the receiving electrode 16 is provided with triangular openings 21-30, from which partition walls forming tabs 51-66 have been bent between the electrode 16 and the screen 19.
  • said tabs or partition walls limit a number of open topped chambers 4150', the oblique far end of which, as seen from the cathode, is formed by the screen 19 and coated with luminescent material.
  • the receiving electrode 16 itself is on its external side, counted from the cathode, in the neighbourhood of the respective holes 214%), pro-vided with luminescent coatings 71-80.
  • the electron beam 12 issues from a hole, for example 21, it will, due to the influence of the magnetic field, be bent towards the external side of the receiving electrode, which it meets on the luminescent surface 71 arranged near said hole; the surface will thereby gleam on a patch corresponding to the section of the beam.
  • a cone-shaped screen 19 is arranged round the upper part of the receiving electrode in the same manner as the screens shown in the preceding figures.
  • the screen 19 is not coated with any luminescent material but polished to shine as a mirror, so as to give upwards a refiectionof the patch formed on the external side of the receiving electrode owing tothe electron beam. If the valve is looked at from above, a reflection 65' of the gleaming patch will thus be visible and the position of the electron beam in the tube can be judged.
  • Anelectron valve of the type described comprising in combination, an evacuated envelope, an elongated cylindrical receiving electrode in said envelope, means providing a constant magnetic field within the envelope and parallel to the axis of said electrode, a cylindrical cathode coaxially arranged in said electrode to emit electrons directed in a circular path by said field and a plurality of circumferentially spaced control electrodes intermediate the receiving electrode and the cathode, each control electrode extending longitudinally of and parallel to the cathode and receiving electrode and having substantial radial extent with its outer portion close to the receiving electrode, the envelope of the innermost portions of said control electrodes coaxially surrounding the cathode and means to separately connect a control electrode to a potential different from that of the other control electrodes to divert electrons from said cathode in a beam to the area of the receiving electrode exposed between such differently energized electrode and the adjacent control electrode preceding it in the direction of electron circulation.
  • each area of the receiving electrode exposed to the cathode between adjacent control electrodes is provided with an aperture through which a part of the electron beam emitted from the cathode can pass when steered to a particular area and material adapted to luminesce when energized by said beam positioned beyond each aperture and at receiving electrode potential in the path of the beam passing through it.
  • the apertures are formed by tabs bent outwardly from the receiving electrode, said tabs forming partitions to divide the coated area of the screen into a number of parts corresponding and allotted to the respective apertures.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
US283395A 1951-07-05 1952-04-21 Electron valve Expired - Lifetime US2755412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE729468X 1951-07-05

Publications (1)

Publication Number Publication Date
US2755412A true US2755412A (en) 1956-07-17

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ID=20316210

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Application Number Title Priority Date Filing Date
US283395A Expired - Lifetime US2755412A (en) 1951-07-05 1952-04-21 Electron valve

Country Status (5)

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US (1) US2755412A (de)
DE (1) DE1101631B (de)
FR (1) FR1063263A (de)
GB (1) GB729468A (de)
NL (1) NL275650A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891185A (en) * 1957-12-31 1959-06-16 Burroughs Corp Indicator tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2526617A1 (de) * 1974-06-14 1976-01-02 Nippon Denso Co Verbrennungsmotor mit reformiergasgenerator

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1816682A (en) * 1926-03-10 1931-07-28 Gen Electric Electron discharge device
US2013093A (en) * 1930-05-22 1935-09-03 Rca Corp Electron discharge device
GB443602A (en) * 1934-09-25 1936-03-03 Ferranti Ltd Improvements in and relating to cathode ray devices
US2071923A (en) * 1930-05-22 1937-02-23 Rca Corp Electron discharge device
US2158114A (en) * 1936-11-21 1939-05-16 Telefunken Gmbh Ultra-high frequency multiplier
US2173252A (en) * 1935-11-05 1939-09-19 Telefunken Gmbh Magnetron
US2213543A (en) * 1937-08-07 1940-09-03 Rca Corp Electron discharge device
US2536150A (en) * 1948-07-19 1951-01-02 Ericsson Telefon Ab L M Electrode system for trochotrons
US2571723A (en) * 1949-06-04 1951-10-16 Hartford Nat Bank & Trust Co Electron discharge tube
US2591997A (en) * 1948-10-29 1952-04-08 Ericsson Telefon Ab L M Electron tube device
US2706248A (en) * 1949-02-12 1955-04-12 Ericsson Telefon Ab L M Systems for magnetic and electric electron flow control

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT167399B (de) * 1939-05-27 1950-12-27 Western Electric Co Elektronenstrahlschalter

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1816682A (en) * 1926-03-10 1931-07-28 Gen Electric Electron discharge device
US2013093A (en) * 1930-05-22 1935-09-03 Rca Corp Electron discharge device
US2071923A (en) * 1930-05-22 1937-02-23 Rca Corp Electron discharge device
GB443602A (en) * 1934-09-25 1936-03-03 Ferranti Ltd Improvements in and relating to cathode ray devices
US2173252A (en) * 1935-11-05 1939-09-19 Telefunken Gmbh Magnetron
US2158114A (en) * 1936-11-21 1939-05-16 Telefunken Gmbh Ultra-high frequency multiplier
US2213543A (en) * 1937-08-07 1940-09-03 Rca Corp Electron discharge device
US2536150A (en) * 1948-07-19 1951-01-02 Ericsson Telefon Ab L M Electrode system for trochotrons
US2591997A (en) * 1948-10-29 1952-04-08 Ericsson Telefon Ab L M Electron tube device
US2706248A (en) * 1949-02-12 1955-04-12 Ericsson Telefon Ab L M Systems for magnetic and electric electron flow control
US2571723A (en) * 1949-06-04 1951-10-16 Hartford Nat Bank & Trust Co Electron discharge tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891185A (en) * 1957-12-31 1959-06-16 Burroughs Corp Indicator tube

Also Published As

Publication number Publication date
DE1101631B (de) 1961-03-09
GB729468A (en) 1955-05-04
FR1063263A (fr) 1954-04-30
NL275650A (de)

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