US2417450A - Electron discharge device - Google Patents

Electron discharge device Download PDF

Info

Publication number
US2417450A
US2417450A US591505A US59150545A US2417450A US 2417450 A US2417450 A US 2417450A US 591505 A US591505 A US 591505A US 59150545 A US59150545 A US 59150545A US 2417450 A US2417450 A US 2417450A
Authority
US
United States
Prior art keywords
electrode
target
electron
pulse
deflecting
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 - Lifetime
Application number
US591505A
Other languages
English (en)
Inventor
Raymond W Sears
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.)
AT&T Corp
Original Assignee
Bell Telephone 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
Priority to BE464957D priority Critical patent/BE464957A/xx
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US591505A priority patent/US2417450A/en
Priority to GB12674/46A priority patent/GB610398A/en
Priority to FR926219D priority patent/FR926219A/fr
Application granted granted Critical
Publication of US2417450A publication Critical patent/US2417450A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

  • This invention relates to electron discharge devices and more particularly to such devices of the multi-anode beam type.
  • One general object of this invention is to improve multi-anode electron beam discharge devices and particularly such devices especially suitable for switching and signaling purposes.
  • objects of this invention are to:
  • an electron discharge device comprises a plurality of anodes or target electrodes mounted in a line, an electron gun for projecting a concentrated electron beam toward the anodes or target electrodes, a pair of deflector plates arranged to effect deflection of the electron beam in the direction of alignment of the anodes or target electrodes, and a second pair of deflector plates arranged to efiect deflection of the beam in a dimension at an angle, e. g., a right angle, to the direction noted.
  • means are provided for causing deflection of the electron beam in the direction noted when a signal voltage or pulse is applied to the second pair of deflector plates.
  • an auxiliary electrode is provided, for example between the deflector plates and the anodes or target electrodes, and is associated with the first deflector plates in such manner that when the beam is deflected by a signal voltage or pulse applied to the second deflector plates, a deflecting voltage of preassigned amplitude is cstablished between the first pair of deflector plates.
  • the deflector plates and auxiliary electrode are so constructed and arranged that initially the beam impinges upon a preassigned anode or target electrode and upon application of a series of pulses to the second deflector plates the beam is stepped from one anode or target electrode to the next adjacent one, one step per pulse, and remains upon any anode or target electrode to which it is stepped until the next succeeding pulse.
  • the auxiliary electrode is constructed so that upon the application of a pulse of certain polarity and amplitude to the second pair of deflector plates, the beam is reset to a preassigned position.
  • the deflector plates and auxiliary electrode are cooperatively designed and associated so that the beam may be stepped from one target electrode or anode to either the next preceding or the next succeeding one by application of a pulse of appropriate polarity to the second pair of deflector plates.
  • a second auxiliary electrode is provided in association with the first auxiliary electrode for automatically transferring the beam to one of the end anodes or target electrodes whenever it is deflected beyond the other end anode or target electrode.
  • Fig. 1 is a diagram of an electron discharge device and associated circuit illustrating certain principles involved in apparatus constructed in accordance with this invention
  • Fig. 2 is in part a perspective view of an electron discharge device and in part a circuit diagram showin an illustrative embodiment of this invention
  • Fig. 3 is an enlarged face view of the auxiliary electrode included in the device shown in Fig. 2, several positions of the electron beam being indicated thereon;
  • Fig. 4 is a. view, similar to Fig. 3, illustrating the construction of another auxiliary electrode which may be incorporated in a device of the construction shown in Fig. 2;
  • Fig. 5 is a perspective view and diagram similar to Fig. 2 illustrating another embodiment of this invention.
  • Fig. 6 is a fragmentary perspective view showin details of the auxiliary electrodes included in the device illustrated in Fig. 5.
  • the electron discharge device illustrated in Fig. 1 comprises an evacuated enclosing vessel I having mounted therein, at one end, an electron emitter, such as an electron gun or thermionic cathode ll, opposite and in alignment with which there is positioned a cylindrical aczelerating anode l2 which functions to focus the electrons emanating from the cathode into a concentrated stream projected toward the opposite end of the enclosing vessel.
  • an electron emitter such as an electron gun or thermionic cathode ll
  • a target electrode I3 and an auxiliary or beam guiding electrode l4 Positioned between the auxiliary electrode l4 and the cathode II are parallel deflector plates [5 and I6 and a second focussing electrode H, which may be defined by a conductive coating upon ithe inner wall of the enclosing vessel l0.
  • the electrodes l2 and H are operated at a positive potential relative to the cathode H and together with the deflector plate l5 may be connected to ground as shown.
  • the other deflector plate I5 together with the auxiliary electrode M are connected to ground by way of a resistor iii.
  • the target electrode I3 is connected to ground by way of a load indicated as a resistor l9.
  • the electron beam When potentials are applied initially to the electrodes of the device, the electron beam will be directed upon the auxiliary electrode It, the beam path being substantially as indicated by the broken line a in Fig. 1. As a result of the electron flow thereto, the auxiliary electrode becomes charged. If the secondary electron emissive ratio of this electrode is less than unity, the charge thereon is negative.
  • the deflector plate l5, being tied to the electrode l4, likewise becomes charged negative so that the beam is deflected, downwardly in the device shown in Fig. 1, to a position such as indicated by the broken line b and impinges upon the target electrode l3.
  • the charge upon the plate I5 is dissipated at a rate determined by the time constant of the resistor-capacitive circuit constituted by the resistor l8, the condenser defined by the deflector plates l5 and i6, and the capacitance between the plate l5 and ground.
  • the condenser discharges, the negative potential upon the plate l5 decreases and, as a result, the beam moves upwardly until it again impinges upon the electrode I4.
  • Quickly an equilibrium condition will be reached at which the beam is at such position that the charge upon the deflector plate I5 is just sufficient to hold the beam fixed.
  • the stream will be deflected in one direction or the other, that is upwardly or downwardly in Fig. 1, depending upon the polarity of this potential.
  • the beam Upon the cessation of the pulse, the beam will be shifted automatically to the position corupon the electrode 14 by a small beam current.
  • Electrodes l3 and 14 mounted in line parallel to the direction of beam deflection, it will be appreciated that there would be a plurality of beam positions, one for each target, for which an equilibrium condition would exist.
  • the beam could be shifted from one target to another by application of a'suitable signal pulse effective to cause deflection of the beam, and at the cessation of the pulse would continue to impinge upon the target electrode to which it was shifted.
  • Fig. 2 Apparatus, illustrative of one embodiment of this invention, for realizing this and other results is shown in Fig. 2.
  • the electron discharge device illustrated in this flgure is similar to that shown in Fig. 1 but is provided with a plurality of target electrodes l3a to l3e inclusive, each having a respective load l9, indicated as a resistor, connected thereto.
  • the auxiliary electrode comprises two similar parts MA and MB each having, as shown clearly in Fig. 3, a side or base portion 20A or 203 and a plurality of parallel finger portions MA or 2
  • the auxiliary electrode is of a material, such as a silver-magnesium alloy, having a secondary emission ratio greater than unity and the two parts thereof are connected together and to the deflector plate l6 which in turn is connected to ground by way of the resistor l8. Secondary electrons emanating from the auxiliary electrode MA, MB are collected by the electrode H, which is maintained at a positive potential by a source such as a battery 22.
  • a fixed potential, of preassigned amplitude noted hereinafter, is applied between the deflector plates [5 and I6 by a source such as a battery 23.
  • auxiliary electrode MA, MB and the deflector plates l5 and i6 and at right angles to the latter are parallel deflector plates 24 and 25 which are connected across an input resistor 26, the mid-point of which is grounded as shown.
  • the auxiliary electrode and deflector plates 24 and 25 are constructed and arranged in such relation that, as indicated in Fig. 3, for no potential difference or a preassigned initial difference between the plates 24 and 25, the beam is at a point on the line 0-0, for an input pulse of preassigned amplitude and one polarity it will move to a point on the line X--X passing through the side or base 20A of the electrode part MA, and for a pulse of this amplitude and the opposite polarity, it will shift to a point on the line Y-Y.
  • the potential applied between the deflector plates l5 and I6 by the source 23 is made of such amplitude and polarity that initially the beam impinges upon or .just grazes the uppermost flnger 2IA in Fig. 3, of the electrode part MA and impinges upon the target electrode In, as indicated by the point a and broken line a respectively in Figs. 3 and 2, so that the beam is in an equilibrium position.
  • the beam current to the electrode part MA is but a small fraction of the total beam current, the remainder flowing to the target electrode I3a.
  • the beam When a signal puls is applied across the input resistor 26, the beam will be deflected laterally in the direction determined by the polarity of the pulse. For purposes of discussion, it may be assumed that for a negative input pulse, the beam will be deflected to the left in Fig. 3 and will deflect to the right for a positive pulse, and that the pulse amplitude is such as to result in deflection to a position corresponding to either the line X-X or Y-Y.
  • the beam when, in response to a negative-pulse, the beam is deflected to the left from position a so that it impinges upon the side or base portion 20A, the auxiliary electrode part MA will become positively charged, inasmuch as the auxiliary electrode material has a secondary emission ratio greater than unity. Consequently, the deflector electrode l 6 will have a positive voltage component applied thereto and the beam will travel along the side or base 20A to an equilibrium position indicated at f, i. e., in grazing incidence with the electrode part MA. Upon the cessation of the input pulse, the beam deflects, to the right in Fig. 3, to the equilibrium position indicated by e and remains in this position, so that the greater portion of the beam current flows to the target electrode I3e.
  • the beam will be deflected to the right in Fig. 3 to a point beyond the end of the lowermost finger 2
  • the charge previously placed upon the deflector plate 16 is dissipated at a rate dependent upon the time constant of the circuit constituted by the resistance I8, condenser defined by the deflector plates l5 and It, the capacitance between the plate I6 and ground and the source 23, and the beam moves upwardly to the equilibrium position indicated by e in Fig. 3.
  • the beam moves to the left beyond the lowermost finger 2
  • the beam will be shifted to the next higher equilibrium position, i. e., c and then b, and, thus, is stepped from one target electrode l3 to the next adjacent one, e. g. from electrode id to electrode l3c, from the latter to electrode l3b, etc.
  • the electron beam may be shifted from its initial position indicated at a to impinge upon the target electrode
  • the beam has been shifted or stepped to any one of the positions indicated by a, b, c or d,it can be returned or reset to the position e by the application of a, negative pulse to the input resistor 26 sufficient to cause the beam to impinge upon the side or base portion 20A of the electrode part MA, inasmuch as, when the beam impinges upon the portion 20A, the deflector plate I 6 is charged to the potential requisite to deflect the seam to the position indicated at f.
  • the beam may be reset to the position indicated at d from any of the positions indicated at a, b and c by the application of a positive pulse to the input resistor 26, of appropriate duration and of amplitude sufllcient to cause the beam to fall upon the side or base portion 203 of the electrode part MB.
  • the beam may he stepped in either direction, that is upwardly or downwardly in Fig. 3, to impinge upon the target electrodes l3 in any desired sequence, and, hence, to close the load circuits associated with these electrodes in like sequence, by application of pulses of appropriate amplitude and polarity to the input resistor 26.
  • the beam should be highly concentrated and the space between adjacent fingers HA and ZIB must be greater than the diameter of the beam.
  • the stepping voltage pulse i. e., the positive stepping pulse in the case described above, must be sufliciently great to deflect the beam from a point on the line O-O to beyond the ends of the fingers ZIA but less than the value requisite to cause the beam to strike the side or base portion 208.
  • the stepping pulse must be of sufiicient duration to allow dissipation of the charge upon the plate l6 through the resistor [8 so that the charge can decrease from a value corresponding to one beam position such as e to a value corresponding to a next succeeding beam position such as e.
  • the rate of dissipation of the charge is determined by the time constant of the resistive-capacitive combination I8 and [5, I6.
  • the reset pulse must be of amplitude just sufficient to deflect the beam from a position on the line O-O to the side or base portion 20A or 203 and must be of sufficient duration, at the maximum, to allow charging of the deflector plate l6 from its initial value to the value corresponding to beam position f.
  • the stepping frequency will be determined primarily by the capacitance of the condenser defined by the plates l5 and [6, the resistance l8, the secondary emission ratio of the auxiliary electrode M, the total beam current and the fraction of the total beam current which is taken by the auxiliary electrode Id when the beam is at an equilibrium position, e. g., at e.
  • stepping frequencies of the order of 10 kilocycles per second, corresponding to a stepping pulse length of about 0.1 millisecond may be realized for the following parameters:
  • the auxiliary electrode I 4A, [4B is constructed as illustrated in Fig. 4.
  • the part MA of this electrode is provided with parallel slanting portions 21 extending between successive fingers 2
  • the deflector plate l6 receives a charge which tends to deflect the beam downwardly.
  • the beam passes successively to a series of positions such as indicated at m, a: and as, the latter corresponding to substantially the maximum value of the stepping pulse.
  • the beam is deflected to the right to the position indicated at a4 and then to the equilibrium or zero pulse position indicated at b and will impinge upon the target electrode 13b.
  • Succeeding pulses of polarity to de- I flect the beam to the leftin Fig. 4 will step the indicated at b to that indicated at c, then to the position indicated at d, and so on.
  • the beam may be switched from one target electrode Hi to either the next succeeding or next preceding target electrode.
  • the beam may be stepped in either direction, up or down in Fig. 4, and brought to rest upon any desired target electrode or upon several target electrodes in any desired sequence.
  • the beam may be reset from any target to a desired position. For example, by appropriate correlation of the parameters, the beam may be reset in this manner to the position indicated at c in Fig. 4.
  • a reset electrode is provided between the uppermost finger 2
  • the reset electrode 28, 29 is connected to the deflector plate 24.
  • this invention provides electronic devices capable of effecting energization of a plurality of load circuits selectively as, for example, in a desired sequence.
  • the switching from one circuit to* another is accomplished by signal pulses so that little expenditure of power is entailed and high operating efllciencies are attainable.
  • relatively simple circuits may be utilized to provide the requisite signal pulses and that auxiliary equipment, necessary to effect stepping oi the beam from one target to another is minimized.
  • high frequency switching can be attained.
  • An electron discharge device comprising a plurality of targets mounted in a row, means for projecting an electron beam toward said targets, and means for selectively directing said beam to impinge upon one or another of said targets, said directing means comprising a first deflecting means effective when energized to deflect said beam in the dimension parallel to said row, a second deflecting means effective when energized to deflect said beam in a direction at an angle to said dimension, means for energizing said second deflecting means and means responsive to deflection of said beam by said second deflecting means for energizing said first deflecting means,
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, and means for stepping said beam from one target electrode to another, said stepping means comprising deflector plate means for deflecting said beam in the direction parallel to said row, deflecting means for deflecting said beam in the direction substantially transverse to said row and means responsive to deflection of said beam in said transverse direction for charging said deflector plate means to effect deflection of said beam in said parallel direction.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, and means for selectively directing said beam to impinge upon one or another of said target electrodes, said directing means comprising a first pair of deflector plates effective when energized to deflect said beam in the direction of said row,- a second pair of deflector plates effective when energized to deflect said beam in a second direction at an angle to said first direction and means responsive to deflection of said beam in said second direction for establishing a potential difference between said first deflector plates.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, av flrst deflecting means efiective when energized to deflect said beam in the direction along said row, and means for controlling said deflecting means to step said beam from one target electrode to another, said controlling means comprising an auxiliary electrode opposite said target electrodes, extending transversely with respect thereto and connected to said deflecting means to energize said deflecting means proportionately to the portion of the beam current to said auxiliary electrode at any time, a second deflecting means effective when energized to deflect said beam in a second direction at an angle to said first direction and means for supplying energizing pulses to said second defleeting means to deflect said beam out of impinging relation with said auxiliary electrode.
  • An electron discharge device comprising a said target electrodes
  • a first deflecting means effective when energized to deflect said beam in the direction along said row, means for energizing said deflecting means to direct said beam nor mally upon a preassigned one of said target electrodes, a second deflecting means efiective when energized to deflect said beam in a second direction at an angle to said first direction, and
  • said stepping means comprising means for applying energizing pulses to said second deflecting means and means responsive to deflection of said beam in said second direction for applying to said first deflecting means an energizing signal for each of said energizing pulses suflicient to step said beam from one of said target electrodes to a preassigned other target electrode.
  • An electron discharge device in accordance with claim 5 comprising means for automatically resetting said beam to impinge upon one of said target electrodes whenever it is stepped to a preassigned position.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, a first deflecting means effective when energized to deflect said beam in the direction along said row, means for energizing said deflecting means to direct said beam normally upon one end target electrode, a second deflecting meansefiective when energized to deflect said beam transversely to said row, and means for stepping said beam in succession from said one end target electrode to the other end target electrode and then to the intermediate target electrodes, said stepping means comprising means for applying energizing pulses to said second deflecting means and means for converting deflection of "sami beam in response to said pulses into energizing signals applied to said first defleeting means.
  • An electron discharge device in accordance with claim '7 comprising means for automatically resetting said beam to impinge upon said other end target electrode when said beam is stepped to a preassigned other electrode.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, 2. first deflecting means effective when energized to deflect said beam in the direction along said row, a second deflecting rneans effective when .energized to deflect said seem in a second direction at an angle to said first direction, and means for energizing said first ieflecting means to selectively step said beam from one target electrode to either the next pre- :eding or next succeeding target electrode, said I energizing means comprising means for applying energizing pulses of one polarity or the other to said second deflecting means and means for converting deflection of said beam in response to said energizing pulses mto signals applied to said first deflecting means and of effective polarity determined by the polarity of said pulses.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward deflector plate means for the dimension parallel to said row, deflection means efiective when energized to deflect said beam transversely to said row, means for applying energizing pulses of one or the opposite polarity to said deflection means, and means for applying to said deflector plate means a charge variable in accordance with the polarity of said pulses to step said beam from one of said target electrodes to a preceding or succeeding target electrode in accordance with the polarity of said pulses.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, deflecting means eflective when energized to deflect said beam in the direction transverse to said row, means for applying energizing pulses of one or the opposite polarity to said deflecting means, and means for stepping said beam from one target electrode to a preceding or succeeding target electrode in accordance with the polarity of said energizing pulses, said stepping means comprising a pair of deflector plates effective when energized to deflect deflecting said beam in said beam in the direction of said row and means responsive to deflection of said beam in said transverse direction for varying the potential between said plates in accordance with the polarity of said pulses.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, a first deflecting means effective when energized to deflect said beam in the direction along said row, a second deflecting means efiective when energized to deflect said beam substantially normal to said direction, and an auxiliary electrode between said first means and said target electrodes and connected electrically to said first deflecting means, said auxiliary electrode having spaced oppositely extending fingers in interleaved relation and defining a plurality of windows one opposite each of said target electrodes and said fingers extending normal to said direction.
  • An electron discharge device comprising a plurality of target electrodes mounted in a row, means for projecting an electron beam toward said target electrodes, a first deflecting means efiective when energized to deflect said beam in the direction along said row, a second deflecting means effective when energized to deflect said beam in a second direction at an angle to said first direction, and an auxiliary electrode between said target electrodes and said first means and connected electrically to said first deflecting means, said auxiliary electrode comprising a plurality of spaced fingers extending parallel to said second direction and defining a plurality of openings one opposite each of said target electrodes.
  • An electron discharge device comprising an auxiliary electrode having therein a tortuous opening composed in part of substantially parallel portions, electron receiving means to one 11 side of said electrode and opposite said portions, means opposite the other side or said electrode for projecting an electron beam through said opening to said electron receiving means, a first deflecting means for deflecting said beam to sweep in one direction over said electrode across said parallel portions, said electrode being connected electrically to said deflecting means whereby said deflecting means is energized proportionately to the portion of said beam intercepted by said auxiliary electrode, and a second deflecting means for deflecting said beam in the direction parallel to said parallel portions.
  • An electron discharge device in accordance with claim 14 comprising a second auxiliary electrode adjacent one of said parallel portions and connected electrically to said second deflecting means.
  • An electron discharge device comprising electron receiving means, means for projecting an electron beam toward said electron receiving means, an auxiliary electrode between said first and second means and having parallel side portions and parallel fingers extending from each of said side portions, toward the other side portion and terminating short thereof, the fingers extending from the two side portions being in alternate relation, a first deflecting means for deflecting said beam in the direction parallel to said fingers, and a second deflecting means connected electrically to said auxiliary electrode to be energized in accordance with the beam current intercepted by said auxiliary electrode, said second deflecting means being positioned to deflect said means normal to said first direction.
  • An electron discharge device in accordance with claim 16 comprising a second auxiliary electrode connected to said first deflecting means and positioned adjacent one of said fingers.
  • auxiliary electrode comprises portions adjacent one of said side portions, inclined with respect thereto and each extending between a corresponding pair or fingers extending from said one side portion.
  • An electron discharge device comprising electron receiving means, means for projecting an electron beam toward said electron receiving means, a pair of deflector plates positioned to deflect said beam in one direction, means for defleeting said beam in a second direction at an angle to said first direction, and means for placing a charge upon one of said plates in response to deflection of said beam by said deflecting means, said last means comprising an auxiliary electrode between said electron receiving and beam projecting means, connected to said one plate and having a pair of side portions extending in said one direction and fingers extending from each side portion in said second direction toward the other side portion and terminating short thereof, the fingers extending from the two side portions being arranged in alternate relation,
  • An electron discharge device comprising electron receiving means, means for projecting an electron beam toward said electron receiving means, a first pair of deflector plates between said electron receiving and beam projecting means and positioned to deflect said beam in one direction, a second pair of deflector plates between said electron receiving and beam projecting means and positioned to deflect said beam at substantially right angles to said first direction, and an auxiliary electrode between said electron receiving and beam projecting means and connected electrically to one of said first pair of deflector plates, said auxiliary electrode comprising parallel side members extending in said one direction and parallel fingers extending from each 01 said side members and normal to said one direction toward the other side member and terminating short thereof.

Landscapes

  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Electron Sources, Ion Sources (AREA)
US591505A 1945-05-02 1945-05-02 Electron discharge device Expired - Lifetime US2417450A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE464957D BE464957A (fr) 1945-05-02
US591505A US2417450A (en) 1945-05-02 1945-05-02 Electron discharge device
GB12674/46A GB610398A (en) 1945-05-02 1946-04-26 Electron discharge device
FR926219D FR926219A (fr) 1945-05-02 1946-05-02 Dispositifs à décharge d'électrons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US591505A US2417450A (en) 1945-05-02 1945-05-02 Electron discharge device

Publications (1)

Publication Number Publication Date
US2417450A true US2417450A (en) 1947-03-18

Family

ID=24366748

Family Applications (1)

Application Number Title Priority Date Filing Date
US591505A Expired - Lifetime US2417450A (en) 1945-05-02 1945-05-02 Electron discharge device

Country Status (4)

Country Link
US (1) US2417450A (fr)
BE (1) BE464957A (fr)
FR (1) FR926219A (fr)
GB (1) GB610398A (fr)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463535A (en) * 1946-03-22 1949-03-08 Bell Telephone Labor Inc Electron discharge device
US2473691A (en) * 1947-08-05 1949-06-21 Bell Telephone Labor Inc Stabilization of cathode beam tubes
US2477008A (en) * 1945-08-01 1949-07-26 Rosen Leo Electrical apparatus
US2488452A (en) * 1946-11-27 1949-11-15 Hartford Nat Bank & Trust Co Circuit arrangement for deflecting the cathode-ray beams in cathoderay tubes
US2512676A (en) * 1946-02-07 1950-06-27 Fed Telecomm Lab Inc Electronic switching
US2522291A (en) * 1945-09-20 1950-09-12 Bell Telephone Labor Inc Cathode-ray tube with target controlled deflecting plates
US2523162A (en) * 1945-10-03 1950-09-19 Philco Corp Electrical system
US2532747A (en) * 1948-03-16 1950-12-05 Hartford Nat Bank & Trust Co Circuit arrangement comprising a cathode-ray tube
US2560585A (en) * 1948-04-06 1951-07-17 Bell Telephone Labor Inc Cathode-ray signal to voltage translating devices
US2561057A (en) * 1946-10-23 1951-07-17 Hartford Nat Bank & Trust Co Circuit arrangement comprising a cathode beam tube provided with means for deflecting the cathode beam
US2568449A (en) * 1947-12-05 1951-09-18 Gen Electric Electronic counter
US2570274A (en) * 1946-03-14 1951-10-09 Int Standard Electric Corp Electron beam switching tube and system
US2576040A (en) * 1948-03-10 1951-11-20 Bell Telephone Labor Inc Cathode-ray device
US2583562A (en) * 1947-11-13 1952-01-29 Bell Telephone Labor Inc Cathode-ray device
US2591842A (en) * 1949-07-06 1952-04-08 Bell Telephone Labor Inc Electron discharge apparatus
US2599949A (en) * 1948-06-24 1952-06-10 Nat Union Radio Corp Electronic stepping switch
US2617075A (en) * 1949-04-09 1952-11-04 Hartford Nat Bank & Trust Co Electric discharge tube comprising means for producing and deflecting an electron beam
US2621323A (en) * 1948-02-26 1952-12-09 Int Standard Electric Corp Pulse code modulation system
US2681424A (en) * 1948-12-15 1954-06-15 Raytheon Mfg Co Electronic storage tube control system
US2685661A (en) * 1951-09-25 1954-08-03 Rca Corp Cathode-ray beam deflection
US2692727A (en) * 1949-08-27 1954-10-26 Gen Electric Apparatus for digital computation
US2704328A (en) * 1950-11-03 1955-03-15 Nat Union Radio Corp Electron-beam tube oscillator
US2735936A (en) * 1956-02-21 gridley
US2736803A (en) * 1949-03-16 1956-02-28 Hartford Nat Bank & Trust Co Frequency control
US2739259A (en) * 1952-04-08 1956-03-20 Clarence E Neat Electron discharge tube
US2747130A (en) * 1951-09-12 1956-05-22 Harold D Goldberg Electronic system
US2750532A (en) * 1948-06-03 1956-06-12 Ibm Cathode-ray devices, particularly for electronic computers
US2755410A (en) * 1950-11-29 1956-07-17 Motorola Inc Color tube
US2781468A (en) * 1952-02-18 1957-02-12 Zenith Radio Corp Television receiver
US2806173A (en) * 1951-01-09 1957-09-10 Philco Corp Signal amplitude limiting circuits
US2916662A (en) * 1952-04-05 1959-12-08 Philips Corp Memory tube
US3076146A (en) * 1945-12-27 1963-01-29 Bell Telephone Labor Inc Cathode beam tube circuit having means for converting current variations to stepped waveform
US3104316A (en) * 1945-08-20 1963-09-17 Philip H Allen Registers
US3416152A (en) * 1964-04-22 1968-12-10 Theodore R. Trilling Analog-to-digital converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735936A (en) * 1956-02-21 gridley
US2477008A (en) * 1945-08-01 1949-07-26 Rosen Leo Electrical apparatus
US3104316A (en) * 1945-08-20 1963-09-17 Philip H Allen Registers
US2522291A (en) * 1945-09-20 1950-09-12 Bell Telephone Labor Inc Cathode-ray tube with target controlled deflecting plates
US2523162A (en) * 1945-10-03 1950-09-19 Philco Corp Electrical system
US3076146A (en) * 1945-12-27 1963-01-29 Bell Telephone Labor Inc Cathode beam tube circuit having means for converting current variations to stepped waveform
US2512676A (en) * 1946-02-07 1950-06-27 Fed Telecomm Lab Inc Electronic switching
US2570274A (en) * 1946-03-14 1951-10-09 Int Standard Electric Corp Electron beam switching tube and system
US2463535A (en) * 1946-03-22 1949-03-08 Bell Telephone Labor Inc Electron discharge device
US2561057A (en) * 1946-10-23 1951-07-17 Hartford Nat Bank & Trust Co Circuit arrangement comprising a cathode beam tube provided with means for deflecting the cathode beam
US2591981A (en) * 1946-10-23 1952-04-08 Hartford Nat Bank & Trust Co Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means
US2488452A (en) * 1946-11-27 1949-11-15 Hartford Nat Bank & Trust Co Circuit arrangement for deflecting the cathode-ray beams in cathoderay tubes
US2473691A (en) * 1947-08-05 1949-06-21 Bell Telephone Labor Inc Stabilization of cathode beam tubes
US2583562A (en) * 1947-11-13 1952-01-29 Bell Telephone Labor Inc Cathode-ray device
US2568449A (en) * 1947-12-05 1951-09-18 Gen Electric Electronic counter
US2621323A (en) * 1948-02-26 1952-12-09 Int Standard Electric Corp Pulse code modulation system
US2576040A (en) * 1948-03-10 1951-11-20 Bell Telephone Labor Inc Cathode-ray device
US2532747A (en) * 1948-03-16 1950-12-05 Hartford Nat Bank & Trust Co Circuit arrangement comprising a cathode-ray tube
US2560585A (en) * 1948-04-06 1951-07-17 Bell Telephone Labor Inc Cathode-ray signal to voltage translating devices
US2750532A (en) * 1948-06-03 1956-06-12 Ibm Cathode-ray devices, particularly for electronic computers
US2599949A (en) * 1948-06-24 1952-06-10 Nat Union Radio Corp Electronic stepping switch
US2681424A (en) * 1948-12-15 1954-06-15 Raytheon Mfg Co Electronic storage tube control system
US2736803A (en) * 1949-03-16 1956-02-28 Hartford Nat Bank & Trust Co Frequency control
US2617075A (en) * 1949-04-09 1952-11-04 Hartford Nat Bank & Trust Co Electric discharge tube comprising means for producing and deflecting an electron beam
US2591842A (en) * 1949-07-06 1952-04-08 Bell Telephone Labor Inc Electron discharge apparatus
US2692727A (en) * 1949-08-27 1954-10-26 Gen Electric Apparatus for digital computation
US2704328A (en) * 1950-11-03 1955-03-15 Nat Union Radio Corp Electron-beam tube oscillator
US2755410A (en) * 1950-11-29 1956-07-17 Motorola Inc Color tube
US2806173A (en) * 1951-01-09 1957-09-10 Philco Corp Signal amplitude limiting circuits
US2747130A (en) * 1951-09-12 1956-05-22 Harold D Goldberg Electronic system
US2685661A (en) * 1951-09-25 1954-08-03 Rca Corp Cathode-ray beam deflection
US2781468A (en) * 1952-02-18 1957-02-12 Zenith Radio Corp Television receiver
US2916662A (en) * 1952-04-05 1959-12-08 Philips Corp Memory tube
US2739259A (en) * 1952-04-08 1956-03-20 Clarence E Neat Electron discharge tube
US3416152A (en) * 1964-04-22 1968-12-10 Theodore R. Trilling Analog-to-digital converter

Also Published As

Publication number Publication date
GB610398A (en) 1948-10-14
FR926219A (fr) 1947-09-25
BE464957A (fr)

Similar Documents

Publication Publication Date Title
US2417450A (en) Electron discharge device
US2548789A (en) Electronic storage device
US2599949A (en) Electronic stepping switch
US2568449A (en) Electronic counter
US2200063A (en) Space discharge apparatus and circuits
US2441296A (en) Computer system
US2532738A (en) Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam
US3331985A (en) Character generating system utilizing a cathode ray tube in which a portion of a plurality of electron beams are selectively defocussed to form the character
US4101804A (en) Traveling wave tube with depressed collector power supply
US2480130A (en) Low impedance switch circuit
US2591842A (en) Electron discharge apparatus
US2597360A (en) Electron ratchet tube
US2563197A (en) Tube with electron velocity compensation
US2237671A (en) Electron discharge device
US2645734A (en) Storage tube with electron multiplying and selecting electrodes
US2061387A (en) Electron discharge tube
US2540835A (en) Cathode-ray device
US2365006A (en) Cathode ray tube and light beam control means
US2710361A (en) Binary coding and decoding tube of the cathode ray type
US2191903A (en) Electron discharge device
US2719248A (en) Electron discharge device
US2231682A (en) Electron multiplier
US2442848A (en) Electron control tube
US2704328A (en) Electron-beam tube oscillator
US2442985A (en) Method of and means for indicating condition of memory element and selectron