US2591981A - Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means - Google Patents

Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means Download PDF

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US2591981A
US2591981A US790874A US79087447A US2591981A US 2591981 A US2591981 A US 2591981A US 790874 A US790874 A US 790874A US 79087447 A US79087447 A US 79087447A US 2591981 A US2591981 A US 2591981A
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electrode
circuit
electrodes
voltage
cathode
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Adrianus Johannes Wilhel Marie
Zeger Van Gelder
Jonker Johan Lodewijk Hendrik
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Hartford National Bank and Trust Co
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Hartford National Bank and Trust Co
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/88—By the use, as active elements, of beam-deflection tubes
    • 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
    • H01J31/04—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 only one or two output electrodes with only two electrically independant groups or electrodes
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K29/00—Pulse counters comprising multi-stable elements, e.g. for ternary scale, for decimal scale; Analogous frequency dividers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages

Definitions

  • CIRCUIT ARRANGEMENT INCLUDING A CATHODE-RAY TUBE COMPRISING CATHODE-RAY BEAM DEFLECTING MEANS Filed Dec. 10, 1-947 7 Sheets-Sheet 7 g E A .J.W VAN OVERBEEK Z.VAN GELDERa. JL.H.JONKER AGENT Patented Apr. 8, 1952 UNITED STATES PATENT OFFICE CIRCUIT ARRANGEMENT, INCLUDING A CATHODE-RAY TUBE COMPRISING CATHODE-RAY BEAM DEFLECTING MEANS Application December 10, 1947, Serial N 0. 790,874 In the Netherlands October 23, 1946 Section 1, Public Law 690, August 8, 1946 Patent expires October 23, 1966 .11 Claims.
  • the invention relates to a circuit-arrangement comprising a cathode-ray tube provided with means for deflecting the cathode-ray beam and to a cathode-ray tube'ior use in such an arrangement.
  • circuit-arrangements of this kind it has often been found desirable for various uses to utilize means which make it possible in a simple manner to fix the cathode-ray beam in definite positions and to displace the beam from a position of this kind to another.
  • a circuit-arrangement is suitable, for example, for use as a line selector or a group selector in an automatic telephony system, as a counting tube in a calculating machine, as a control circuit for emitting voltage pulses at regulartime intervals, as a control tube vfor barring mechanisms, for frequency division.
  • the circuit-arrangement according to the invention is characterized in that, atone or more positions of the cathode-ray beam, current distribution occurs to at least two collecting electrodes and in that the current passing through at least one of the circuits connected to one of these electrodes acts upon the deflection of the cathode-ray'beam so as to keep the beam in the position concerned.
  • an automatic telephone selector which comprises a cathode-ray tube having a plurality of anodes and in which deflecting means enable direction of the beam to each of these anodes, the beam being, however, not held on a definite anode with the aid of current distribution, so that stabilizing the desired position involves a comparatively complicated circuitarrangement.
  • circuit-arrangement according to the invention provision is made for one or more positions of the beam which are-stable by nature, :so that such a circuit-arrangement is of simple nature.
  • Fig. 1 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 2 is a curve explanatory of the operation of the circuit in Fig. 1;
  • Fig. 3 is a perspective view of the tube struc ture in Fig. 1;
  • Fig. 4 is an electrode structure in accordance with the invention.
  • Fig. .5 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 6 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 7 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 8 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 9 is a curve explanatory of the operation of the circuit in Fig. 8.
  • Fig. 10 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 11 is acurve explanatory of the operation of the circuit in Fig. 10;
  • Fig. 12 is a curveexplanatory of the operation of the circuit in Fig. 5;
  • Fig. 13 is a curve explanatory of the circuit in Fig. 1 when the electrodes therein are secondarily emissive;
  • Fig. 14 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 15 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 16 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 17 is a schematic diagram of a circuit in accordance with the invention.
  • Fig. 18 is a curve illustrative of the behavior of a circuit including a tube having bi-directional deflecting means
  • Fig. 19 is a circuit in accordance with the invention.
  • Fig. 20 is a circuit in accordance with the invention.
  • Fig. .21 is a circuit in accordance with the invention.
  • Fig. 22 is an electrode structure in accordance with the invention.
  • Fig. '23 is a circuit in accordance with them vention
  • Fig. 24 is an electrode structure in accordance with the invention.
  • Fig. 25 is an electrode structure in accordance with the invention. 1
  • Fig. 26 is an electrode structure in accordance with the invention.
  • Fig. 27 is an electrode structure in accordance with the invention.
  • Fig. 2 8 is an electrode structure in accordance with the invention.
  • the cathode-ray tube I of Fig. 1 comprises means known per se and diagrammatically shown for producing a cathode-ray beam I I, a set of plates .2 for deflecting the beam and, in addition, two co1lecting electrodes 3 and 4.
  • the electrode 3 is constructed in such manner that, upon deflection, at least part of the beam impinges either on the electrode 3 or on the electrode 4.
  • it may, for example, comprise separate conductively interconnected plates or it may be constituted by one plate in which properly chosen recesses are provided.
  • the electrode 3 is connected through a conductor 6 to the positive terminal of a voltage source, the negative terminal of which is connected to the cathode of the cathode-ray tube.
  • the positive terminal of this voltage source is connected, in addition, through a resistance 1 and a conductor 8, to the collecting electrode 4, the end of the resistance I which is remote from the voltage source being connected to one of the defleeting plates.
  • the current is. passing through the circuit 8 as a function of the deflection produced which is determined by the voltage difi'erence V between the deflecting plates exhibits a plurality of maxima and minima, as shown in Fig. 2 by curve II.
  • the value of these maxima and minima and their relative position are largely determined by the dimensions and the arrangement of the two electrodes 3 and 4 and by the shape and size of the sectional area of the cathode-ray beam.
  • the voltage V set up across the deflecting plates and obtained from the resistance I linearly varies with the current is passing through this resistance, this relation being shown in Fig. 2 by the resistance line l2.
  • the resistance 1 is such that the line I2 intersects the curve II at a number of points.
  • the points of intersection designated I3, I4, I5 and I6 yield stable,positions for the cathode-ray beam. If, for example, the voltage V increases from point I 4, this involves an increase of 2 2. along the curve I I, but, in accordance with the relation represented by the line l2, this increase of is results in a decrease of V, so that the increase of V is thus counteracted and return to the position I4 will be effected.
  • FIG. 3 shows diagrammatically the arrangement of the electrodes in accordance with the circuit-arrangement shown in Fig. 1.
  • the reference numerals of this figure correspond to those of Fig. l. V
  • the current is passing to the electrode 4 is a minimum, which corresponds, for example, with point I9 of Fig. 2.
  • This causes the voltage across the end 20 of the resistance I to differ only little from the battery voltage, so that the beam moves to the right and, owing to the current distribution which occurs, the current is. is increased with the result that the voltage across point 20 is decreased and the movement of the beam comes to a standstill if point I4 in Fig. 2 is reached, the beam falling in 4. part on to the electrode 3 and in part on to the electrode 4.
  • the deflecting voltage may be obtained from a resistance included in the conductor 6; in this case the beam is not adjusted on the righ-hand edge of the electrode 3 shown in Fig. 3 but on the left-hand edge.
  • deflection may be eflected in such manner that the voltage for the one deflecting plate is taken from a resistance included in the conductor 6, whereas the voltage set up across the resistance 1 is fed to the other deflecting plate; in this case the stabilizing elfects will support one another.
  • the electro-static deflection may be replaced by electromagnetic deflection, if a deflecting coil is included in the circuit 6 and/or 8.
  • the beam as a whole should take part in the current distribution, in which case the centre of the sectional area of the beam traverses the dotted lines which in Fig. 3 are indicated on the electrode.
  • the path of the beam may, for example, be such that the path described by the centre of the sectional area lies higher than is indicated in the figure, so that only part of the beam assists in current distribution, whereas the remaining part of the beam may be used for other purposes, the first-mentioned part of the beam thus ensuring stable adjustment to a given position as required in view of further use.
  • the electrodes need not be arranged one behind the other in the direction of the oathode-ray beam but may be arranged alternatively side by side, as long as the arrangement is such that at a number of beam positions current distribution to the electrodes occurs.
  • a set of electrodes may, for example, be constructed as the electrodes 20 and 2
  • the centre of the beam 23 describes the line 22 during deflection and in order to obtain current distribution, the distance d between the projecting parts of the electrodes is smaller than the largest dimension a of the beam-section chosen in the direction of movement.
  • circuit-arrangements shown it may furthermore be useful, in addition, slightly to vary the positions of the beam, which may be effected by varying the resistance 1, with the result that rotation of the resistance line I2 of Fig. 2 is brought about so that the intersections [3, I4, I5 and I6 change places.
  • a voltage of suitable value and suitable polarity may be fed to the deflecting plates, for example through the conductor II]. If the beam originally occupies, for example, the position corresponding to point I6 in Fig. 2, a voltage V16 being set up between the deflecting plates, this voltage will have to be reduced finally to V15 in order that the beam may reach a position corresponding to point 15. Seeing the stable condition of each adjustment, it is obvious that a certain tolerance of the voltage to be supplied is allowed, since the current partition results in a reaction which repels the beam to the point I5 if the voltage supplied differs slightly from V16 and V15.
  • a rectangular voltage .impulse'to a :network the time constant of which is :equalto the time constant of resistance! and'capacity 9, the output voltage of this network being then supplied to the conductor l0.
  • a circuit-arrangement is shown inFig. '5 and comprises a resistance :21 and-a condenser 26. They havegsupplied to them a rectangular impulse 28 fordisplacement of the beam. If several of such impulses are fed to the deflecting plates, the "beam. moves, .for example, from the position associated with the highest deflecting voltage, point in Fig. 2, in a stepwise manner to the position with the lowest deflecting voltage, point 13 in Fig. 12'.
  • the beam may becaused to return to point l-B either stepwise or at a stretch by'rsupplying negative impulses of suitable value to the network 26, 21 or by temporarily short-circuiting the resistance 7, but for various usesof 'the ci-rcuit-arrangement it is desirable that means should be available which ensure that after a definite position is reached displacement of the beam to a iurther position is automatically achieved.
  • Figs. 6 and '7 diagrammatically show two circuit-arrangements of this kind. In both circuit-arrangements the supplementary collecting electrode 29 is arrangedfin such manner that, if the beam finds its way to the position 'associated with the lowest deflecting volta e. this being position J3 in .Fig. 2, it impinges on this supplementary electrode.
  • this electrode is connected through a condenser tothe anode of a discharge tube 30 whichisincluded in a blocking oscillator circuit 'known perse.
  • This tank circuit is adjusted in .such manner that not until the beam reachesthe electrode 29 it becomes operative .owing to the positive voltage impulse occurring across the grid circuit of the oscillator.
  • This causes a positive voltage impulse occurring with asmalltime-lag to -be setup, through a coupling condenser at the right-hand deflecting plate, so that :the .beamis moved to the right.
  • FIG. 8 A further circuit-arrangementis shown in Fig. 8,:a voltage-pulse being repeatedly supplied-across theresistance ,2! and the condenser 26 for the stepwise displacement of the beam.
  • the voltage across the resistance 2'! decreases, so that the deflecting voltage prevailing between the plates 2 .is reduced and the curve ll of Fig. 9 shifts relatively to the resistance line I2 to a position l I, in which intersections with the line l2 no longer occur. This results in the beam returning to point 36.
  • the circuit 8 which comprises the resistance 1 from which a deflecting voltage is obtained is fed through a potentiometer, which comprises a discharge tube 31 and a resistance 38.
  • the control-electrode of the discharge tube has supplied to it a voltage from 'a potentiometer 39, 49 which is connected on the one hand to :one of the deflecting plates land ontheother hand to the negative terminal of .a battery 42.
  • Aslongasthe cathode-ray beam occupies one of .the positions which .correspond to a comparatively high deflecting voltage the voltage of .thecontrol-electrode of the discharge tube is positive and the total .resistance of the reacthre circuit 8 is in which R1 designates the resistance of the discharge tube 31, the relation between the current strength is, in the circuit 8 and the deflecting voltage V occurring being represented by the line 43 of Figpll. 'If, after the required voltage'impulses have been supplied to the network 26, 21 in succession, the cathode-ray beam occupies the position corresponding to point 44 .of F'ig.
  • tube 31 may be kept for some time in cut-off position
  • the dimensions and the arrangement of the collecting electrodes to be such that the value of the maxi mum of current strength which occurs for the position at which the beam is desiredto be returned to another position is much higher than the value of the other maxima. If the current ia exhibits, for example, the shape 50 (Fig. 12) and if position is that at which the beam is moved back to position 5'2, it is favourable if the maximum 53 considerably exceeds the other maxima.
  • one or more of the said collecting electrodes with which the current that passes through the circuit connected thereto acts on the deflection of the cathode-ray beam are constructed in the form of secondary-emission electrodes.
  • Secondaryemission electrodes of this kind permit of readily obtaining a current strength in the circuits connected to the said electrodes which exceeds that of the above described circuit-arrangement and owing to which the sensitiveness of the circuit-arrangements is enhanced.
  • a circuit-arrangement of this kind which may otherwise be, for example, of the kind shown in Fig. 1, will be explained more fully with reference to Figs. 1 and 13, it being assumed that the electrode 4 of Fig. 1 is constructed to operate as a secondary-emission electrode having a secondary-emission factor exceeding 1. If the current in passing in the circuit Sis assumed to be positive if it flows in the direction designated by the arrow, the relation between this current and thdeflecti'ng voltage and, 'in'addition,'the re-- sistance lines are representedby the curve 60 and the straight line Bl respectively in Fig. 13. For the stepwise displacement of the beam use may again be made of the circuit-arrangement as shown at the left of Fig. 5.
  • Fig. 14 shows the circuit-arrangement for the recurring movement of the beam, in which a discharge tube is connected in parallel with the series combination of aresistance 62 and a supply battery 63.
  • the battery 65 and the anode 66 which is connected to the right-hand deflecting plate 61, have connected between them a potentiometer 68, 69, from which a control voltage for the discharge tube is obtained. on displacement 'of the beam from the position 10 in Fig. 13 to the position 1
  • the potentiometer 68, 69 and the voltage of the battery 65 are chosen to be such'that the tube 64 continues to be disabled.
  • a condenser 14 is arranged between the control-electrode and the cathode of the discharge tube, in order to keep the resistance line 61 for some time in the steeper position by maintaining the tube 64 to be conductive.
  • a tetrode or a pentode as to constitute the discharge tube.
  • circuit-arrangement having one or more collecting electrodes constructed as secondary-emission electrodes permits the use of a supplementary electrode which is also constructed to have a secondary emission.
  • a circuit-arrangement the operation of which is similar to that of Figs. and 8 and in which again displacement of the characteristic curve takes place, is shown in Fig. 15.
  • the electrodes 11 and 18 are realised as 9" secondary-emission electrodes. After the beam has moved farther and farther to the right under the action of several voltage impulses supplied at 83, it impinges at the last stage on the electrode 18, with the result that the voltage across the resistance 82 increases and the displacement of the characteristic curve is obtained.
  • a supplementary secondaryemission collecting electrode In the circuit-arrangement shown in Fig. 16 use is also made of a supplementary secondaryemission collecting electrode. If the beam impinges on this electrode 84, a resistance 85 has set up across it a positivevoltage; impulse which is supplied through a potentiometer 86 to the control grid of a discharge tube 81 included in a blocking oscillator circuit. The voltage across this control-grid is adjusted such that the tube does not ignite until this impulse occurs. Consequently, a moment afterwards the control-grid circuit of this tube has set up across it anegative voltage impulse which is fed to the right-hand deflecting plate and displaces the beam to a further stage in accordance with the value of the negative impulse.
  • Fig. 17 shows a circuit-arrangement in which reduction in current strength of the cathode-ray beam is again utilized.
  • a discharge tube 93 Connected in parallel with a resistance 89 included in the supply circuit of the anode 8-8 is a discharge tube 93.
  • This tube is normally disabled by means of a battery 9E and a potentiometer 9
  • the voltage at the end 96 of the resistance 30 included in the circuit of the secondary-emission collecting electrode 91 is, however, increased to such a value that the tube 93 ignites, with the result that the voltage of the anode 88 is reduced. This causes the current strength of the beam to decrease to such an extent that intersections no longer occur and the beam moves to the position with the lowest deflecting voltage.
  • the terminal point of the beam is adapted tomove in the plane XY, one coil influencing the deflection in X-direction and the other coil the deflection in the Y-direction.
  • the coil influencing the deflection in the X-direction is included in the circuit of a collecting electrode which takes part in the current distribution. Consequently, there is a relation between the current i1 passing in the coil and plotted in a vertical direction and the point X of the beamend, this relation not being indicated by a line, but, as a result of a potential displacement in the Y-direction, by the plane 11.
  • deflection is produced in the direction of the arrow indicated in this electrode, whereasin the case of the electrode 99 being struck de-- flection is produced in the opposite sense.
  • the electrodes I60 and Ifil are connected in a similar push-pull arrangement to the coil I03, with the resultv that deflections also indicated by arrows are produced in a horizontal direction. If then, by suitable deflection, the beam is moved into the proximity of a position in which current distribution to the four electrodes occurs, adjustment of the beam in a stable manner will ensue between these four electrodes in one of the positions I04, I05 or I06.
  • such a circuit-arrangement may be realized with electrostatic deflection, asis shown in Fig. 20, in which the plates I01 ensure horizontal and the plates I08 vertical deflection.
  • Fig. 20 For the sake of simplicity only one position I09 is shown here in which current distribution to the four electrodes HG, III, H2 and H3 occurs, but like indicated in Fig. 19 for three positions, this circuit-arrangement may also be extended in an analogous manner to a plurality of positions. If the beam strikes the electrode H0, the potential of point H4 is reduced and the beam moves to the right according to the arrow. Similar considerations apply to the other electrodes. Thus the beam is ultimately adjusted in the stable position I09.
  • Fig. 21 shows a circuit-arrangement in which of each pair of electrodes one electrode, in this case H5 and H6, is constructed so as to have secondary emission. If the beam strikes the electrode l I 5, the potential of point I I1 increases owing to which the potential of the left-hand deflecting plate H8 for the horizontal deflection increases and the beam moves in the direction of the arrow shown in the electrode H5. If the beam strikes the electrode H9 the potential of point H1 decreases and the beam moves in the opposite direction. Displacement in a vertical direction is similarly effected with the aid of the deflecting plates I 20.
  • circuit-arrangements shown in Figs. 19, 20, 21 and 22 permit, by the supply of suitable deflecting voltages or currents, of the beam being shifted from one stable adjustment to another, either in a horizontal or in a vertical direction. If, for example, the coil I03 of Fig. 19 has supplied to it a suitable current, for example across a transformer, the beam is adapted to be moved horizontally from position I04 to I05 and vertical displacements may be effected in an analogous manner with the aid of currents passing through the coil I02.
  • Fig. 23 shows a circuit-arrangement for limiting the position of the beam within a definite space angle.
  • current distribution occurs to at least one of the four electrodes I26, I21, I28 and I29 and a further electrode I30 which is shown located behind the four first-mentioned electrodes.
  • These four electrodes each consist of two parts, for example, I26 I and I25 II; these parts are arranged in such manner that, viewed from the cathode of the tube, they form two concentric rings. This, consequently, does not mean that these electrodes must necessarily be located in one plane, since they may be spaced at different distances from the cathode.
  • the figure shows the connection between two of these electrodes and one set of deflecting plates I3I for horizontal deflection.
  • the connection of the other electrodes to the plates for vertical deflection is similar. Owing to the reaction thus produced the beam upon impingement on one of the electrodes moves according to the arrow indicated therein, so that the position of the beam is limited to the space determined by the concentric rings.
  • Fig. 24 shows an electrode arrangement in which current distribution to at least one of six electrodes I32 to I31 inclusive arranged in a ring and a further electrode (not shown) arranged behind these six electrodes takes place.
  • these electrodes may be coupled, for example individually, to a deflection coil, these coils being arranged with a relative displacement of
  • two opposite electrodes, for example I34 and I3! may jointly be coupled to one coil, the three coils thus provided being arranged at 120 relatively to one another.
  • Such a circuit-arrangement may be readily extended to ten or more electrodes, each of which is connected to a tapping of a deflection coil which is wound in a manner as applied to rotor windings of an electric motor.
  • a similar circuit-arrangement may, as an alternative, be realized with electrostatic deflection, as will be seenby reference to Fig. 25.
  • current distribution occurs to at least one of twelve electrodes I38 arranged in accordance with the sides of a regular dodecago'n and a further electrode (not shown) arranged behind them.
  • Each of the electrodes I38 is connected to a junction between two resistances of twelve resistances I39 included in a ring circuit.
  • This ring circuit is supplied at four points through resistances I40, four symmetrically located points being connected to two pairs of deflecting plates I4I. Also in this case adjustment of the beam to the edge of one of the electrodes I38 takes place.
  • each of the electrodes for example I42, comprises two parts I42-I and I42-II. Upon impingement on such an electrode a displacement of the beam again occurs in the direction of the arrows shown. Also in this case current distribution occurs with a further electrode located behind the electrodes shown. The beam will become adjusted, for example, to a position designated I43.
  • a reentrant angle in which the beam becomes adjusted, such with the aid of five electrodes which are subdivided into four partial electrodes, such for example as electrode I44, the outer edges of these partial electrodes forming together a regular figure exhibiting alternately re-entrant and salient angles.
  • a coil for displacing the beam from one position I45 to position I46 use is made of a coil, the axis of which coincides with the connecting line between the cathode and the centre 41 of the electrode pattern. If a voltage impulse is supplied to this coil, the beam moves along a circular arc in the arrow direction shown. The connecting line between the points I45 and I41 is the centre line of this arc. If in this case the beam strikes the electrode I48, it is moved to position I46.
  • Fig. 28 shows the electrode pattern for a circuit-arrangement, in which the beam again becomes adjusted in the re-entrant angles formed by the external edges of an electrode system, but in which displacement from one position to another is effected by means of electrostatic deflecting means.
  • the external boundaries of the internal ring of the electrodes I again form alternately re-entrant and salient angles and these electrodes are connected to deflecting plates in a manner which is sure to be obvious after the foregoing, such that the beam becomes adjusted in the re-entrant angle, for example at I50. If the beam is given a radially-directed impulse towards the centre it finds its way to electrode I5I and is moved to position I52.
  • the internal ring of electrodes is surrounded by a second ring of electrodes I53 which are coupledjo electrostatic deflecting means in such manner that the beam, upon impingement on these electrodes, performs a tangential movement in the direction of the arrows. With the aid of these electrodes and radial impulses the beam may be moved from the position I52 back to the position I5I.
  • An electronic system comprising. a cathoderay tube provided with an electron beam source, means for deflecting said beam in a. given plane, a first collecting electrode, a second. collecting electrode interposed between said deflecting means and said first electrode and. having spaced Openings therein whose cross sectional dimensions relative to that of said beam efiect distribution of beam current betweensaid first andsecnd electrodes atevery position of said beam, a resistance, means to impress an accelerating. potential on said second electrode. and through said resistance on said first electrode; means coupling said first electrode to said deflecting means, and means to apply an external voltage impulse to said deflecting means to displace said beam.
  • An electronic system comprising a cathoderay tube provided with a source generating an electron beam having predetermined cross sectional dimensions, means to deflect said beam within a given plane, first and second collecting electrodes mounted at, spaced positions intersecting said plane, said second electrode being disposed in front of said first collecting electrode with respect to said source and having a plurality of spaced openings therein whose cross sectional dimensions are smaller than that of said beam whereby at every position of said beam its current is distributed between said first and second electrodes, beam current flowing to said first electrode exhibiting a plurality of maxima and minima which vary progressivey in the same sense as a function of beam deflection, a resistance, means to impress an accelerating potential on said second electrode and through said resistance on said first electrode, means coupling said first electrode to said deflecting means, and means to apply an external impulse to said deflecting means to displace said beam.
  • An electronic system comprising a cathoderay tube provided with a source generating an electron beam having predetermined cross sectional dimensions, a pair of deflecting elements to deflect said beam within a given plane, first and second collecting electrodes mounted at spaced positions intersecting said plane, said second electrode being disposed in front of said first collecting electrode with respect to said source and having a plurality of spaced openings therein whose cross sectional dimensions are smaller than that of said beam whereby at every position of said beam its current is distributed between said electrodes, beam current flowing to said first electrode exhibiting a plurality of maxima and minima which vary progressively in the same sense as a function of beam deflection, a resistance, means to impress an accelerating potential on said second electrode and through said resistance on said first electrode, means connecting said first electrode to one of said elements, and means to apply an external impulse to the other of said elements to displace said beam.
  • one of said collecting electrodes is constituted by material which emits secondary electrons and has a secondary-emission factor exceeding one.
  • An electronic system comprising a cathode- '14 ray tube provided with a. source. generating an electron beam having predetermined cross. sectional dimensions, apair'of deflecting elements.
  • first and second. collecting. electrodes mounted at spaced positions intersecting said plane, said second electrode being disposed infront of' said first: collecting electrode With respect to. said source and having a plurality of; spacedopenings therein whose cross sectional. dimensions are smaller than that of said beam whereby at every position. of said beamits current is distributed between saidlelectrodes, beam current flowing to said first electrode exhibiting a plurality of maxima and minima whichvary progressively in thesame sense as a funtcion of beam deflection, a. resistance, means to impress an accelerating potential on. said second electrode: and through said resistance on said first electrode, means connecting said first electrode. to one of said elements, means to apply an. external impulse to the other of said elements to displace said beam, and a gaseous discharge tube connected across said resistance and having an ignition voltage response corresponding to a predetermined: voltage value across said resistance.
  • An electronic system comprising a cathoderay tube. provided with a. source generating an electron beamv having predetermined cross. sectional dimensions, first and second deflecting elements for deflecting saidbeam within a given plane, first and second collecting electrodes mounted at spaced positions intersecting said plane, said second electrodev being disposed in front of said first electrode with respect to said source and having spaced openings therein whose cross sectional dimensions; are smaller than that of said beam whereby at every position of said beam its current is distributed between said electrodes, beam current flowing to said first electrode exhibiting a plurality of maxima and minima which vary progressively in the same sense as a function of beam deflection, and a supplemental electrode disposed adjacent one end of said first collecting electrode, a resistance, means to impress an accelerating potential on said second electrode and through said resistance on said first electrode, means connecting said first electrode to said first element, means to apply an external voltage impulse to said second element to displace said beam, a blocking oscillator including an electron discharge device having a cathode
  • An electronic system comprising a cathoderay tube provided with a source having a cathode,
  • first and second deflecting elements for deflecting said beam
  • first and second collecting electrodes mounted at spaced positions intersecting said plane, said second electrode being disposed in front of said first electrode with respect to said source and having spaced openings thereon whose cross sectional dimensions are smaller than that of said beam whereby at every position of said beam its current is distributed between said electrodes, beam current flowing to said first electrode exhibiting a plurality of maxima and minima which vary progressively in the same sense as a function of beam deflection, and a supplemental electrode disposed adjacent one end of said first collecting electrode, a resistance, means to impress an accelerating potential on said second electrode and through said resistance on said first electrode, means connecting said first electrode to said first element, means to apply an external voltage impulse to said second element to displace said beam, means to derive a control impulse from said supplemental electrode when impinged on by said beam, a delay network, and means to apply said control impulse through said network to the an
  • An electronic system comprising a cathoderay tube provided with a source generating an electron beam having predetermined cross sectional dimensions, first and second deflecting elements for deflecting said beam within a given plane, first and second collecting electrodes mounted at spaced positions intersecting said plane,,said second electrode being disposed in front of said first electrode with respect to said source and having spaced openings thereon whose cross sectional dimensions are smaller than that of said beam whereby at every position of said beam its current is distributed between said electrodes, beam current flowing to said first electrode exhibiting a plurality of maxima and minima which vary progressively in the same sense as a function of beam defiectiomand a supplemental electrode disposed adjacent one end of said first collecting electrode, said supplemental electrode and said first collecting electrode having secondary-emission factors exceeding one, a resistance, means to impress an accelerating potential on said second electrode and through said resistance on said firstelectrode, means connecting said first electrode to said first element, means to apply an external voltage impulse to said second element to displace said beam, a
  • an electron discharge device having a cathode, a grid and an anode and circuits therefor, and feedback means coupling said anode to said grid, means coupling the anode-cathode circuit of said device across said resistance, means to derive a control impulse from said supplemental electrodefwhen impinged on by said beam, and means to apply said control impulse to the grid-cathode circuit of said device to render said device conductive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Television Scanning (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • X-Ray Techniques (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Measurement Of Radiation (AREA)
  • Pyridine Compounds (AREA)
US790874A 1946-10-23 1947-12-10 Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means Expired - Lifetime US2591981A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL278394X 1946-10-23
NL2532738X 1948-03-20
NL2561057X 1948-05-05

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US2591981A true US2591981A (en) 1952-04-08

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US790874A Expired - Lifetime US2591981A (en) 1946-10-23 1947-12-10 Circuit arrangement, including a cathode-ray tube comprising cathode-ray beam deflecting means
US76924A Expired - Lifetime US2532738A (en) 1946-10-23 1949-02-17 Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam
US90602A Expired - Lifetime US2561057A (en) 1946-10-23 1949-04-30 Circuit arrangement comprising a cathode beam tube provided with means for deflecting the cathode beam

Family Applications After (2)

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US76924A Expired - Lifetime US2532738A (en) 1946-10-23 1949-02-17 Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam
US90602A Expired - Lifetime US2561057A (en) 1946-10-23 1949-04-30 Circuit arrangement comprising a cathode beam tube provided with means for deflecting the cathode beam

Country Status (7)

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US (3) US2591981A (ro)
BE (3) BE478917A (ro)
CH (3) CH278394A (ro)
DE (3) DE970182C (ro)
FR (3) FR59153E (ro)
GB (5) GB684552A (ro)
NL (3) NL75979C (ro)

Cited By (9)

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Publication number Priority date Publication date Assignee Title
US2806173A (en) * 1951-01-09 1957-09-10 Philco Corp Signal amplitude limiting circuits
US2807747A (en) * 1952-07-05 1957-09-24 Nat Union Electric Corp Pulse-counting systems
US2816231A (en) * 1953-09-29 1957-12-10 High Voltage Engineering Corp Method and apparatus for imparting a scanning movement to a beam of charged particles
US2875372A (en) * 1953-03-30 1959-02-24 Itt Information location circuit
US2882443A (en) * 1955-01-27 1959-04-14 Roy E Nather High speed pulse counting circuits
US2887612A (en) * 1956-10-17 1959-05-19 Gen Dynamics Corp Coding and decoding device utilizing a cathode ray type tube
US2905854A (en) * 1955-06-06 1959-09-22 Hazeltine Research Inc Electron-discharge device
US3355620A (en) * 1963-12-02 1967-11-28 Tektronix Inc Pulse counter tube employing voltage feedback from target to beam deflection electrodes isolated from any d. c. reference voltage
US3793551A (en) * 1970-06-01 1974-02-19 Ind Electronic Engineers Display tube

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL75367C (ro) * 1949-04-09
NL154187B (nl) * 1949-06-29 Kamlet Edna Yadven Werkwijze voor het bereiden van een kunstmestprodukt en de onder toepassing van deze werkwijze verkregen gevormde kunstmestprodukten.
NL82254C (ro) * 1950-02-14 1956-08-15
US2644909A (en) * 1950-03-06 1953-07-07 Hartford Nat Bank & Trust Co Circuit-arrangement comprising a cathode-ray tube
DE961643C (de) * 1952-10-06 1957-04-11 Guenther H Krawinkel Dr Ing Elektronischer Schalter
GB1547964A (en) * 1975-07-11 1979-07-04 Emi Ltd Electron beam deflection arrangements

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US2011920A (en) * 1930-07-31 1935-08-20 Rca Corp Oscillator
US2107410A (en) * 1936-07-30 1938-02-08 Rca Corp Automatic gain control circuit
US2204055A (en) * 1938-11-25 1940-06-11 Bell Telephone Labor Inc Telephone system
US2224677A (en) * 1939-03-23 1940-12-10 Bell Telephone Labor Inc Signaling system
US2361766A (en) * 1941-04-01 1944-10-31 Hadekel Ruben Automatic telegraph apparatus
US2404106A (en) * 1943-08-13 1946-07-16 Rca Corp Electronic calculating device
US2417450A (en) * 1945-05-02 1947-03-18 Bell Telephone Labor Inc Electron discharge device
US2436677A (en) * 1942-12-31 1948-02-24 Rca Corp Incremental deflection of cathoderay beam
US2446945A (en) * 1942-08-25 1948-08-10 Rca Corp Electronic computing device

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US1257971A (en) * 1917-02-17 1918-03-05 Joseph Bethenod Generator of sustained electric oscillations.
DE708516C (de) * 1938-07-24 1941-07-23 Fernseh Gmbh Verfahren zur Frequenzteilung mittels einer Kathodenstrahlroehre
US2395299A (en) * 1939-11-13 1946-02-19 Bell Telephone Labor Inc Electron discharge apparatus
US2390250A (en) * 1942-11-03 1945-12-04 Rca Corp Cathode ray tube and circuit
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

Patent Citations (9)

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Publication number Priority date Publication date Assignee Title
US2011920A (en) * 1930-07-31 1935-08-20 Rca Corp Oscillator
US2107410A (en) * 1936-07-30 1938-02-08 Rca Corp Automatic gain control circuit
US2204055A (en) * 1938-11-25 1940-06-11 Bell Telephone Labor Inc Telephone system
US2224677A (en) * 1939-03-23 1940-12-10 Bell Telephone Labor Inc Signaling system
US2361766A (en) * 1941-04-01 1944-10-31 Hadekel Ruben Automatic telegraph apparatus
US2446945A (en) * 1942-08-25 1948-08-10 Rca Corp Electronic computing device
US2436677A (en) * 1942-12-31 1948-02-24 Rca Corp Incremental deflection of cathoderay beam
US2404106A (en) * 1943-08-13 1946-07-16 Rca Corp Electronic calculating device
US2417450A (en) * 1945-05-02 1947-03-18 Bell Telephone Labor Inc Electron discharge device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806173A (en) * 1951-01-09 1957-09-10 Philco Corp Signal amplitude limiting circuits
US2807747A (en) * 1952-07-05 1957-09-24 Nat Union Electric Corp Pulse-counting systems
US2875372A (en) * 1953-03-30 1959-02-24 Itt Information location circuit
US2816231A (en) * 1953-09-29 1957-12-10 High Voltage Engineering Corp Method and apparatus for imparting a scanning movement to a beam of charged particles
US2882443A (en) * 1955-01-27 1959-04-14 Roy E Nather High speed pulse counting circuits
US2905854A (en) * 1955-06-06 1959-09-22 Hazeltine Research Inc Electron-discharge device
US2887612A (en) * 1956-10-17 1959-05-19 Gen Dynamics Corp Coding and decoding device utilizing a cathode ray type tube
US3355620A (en) * 1963-12-02 1967-11-28 Tektronix Inc Pulse counter tube employing voltage feedback from target to beam deflection electrodes isolated from any d. c. reference voltage
US3793551A (en) * 1970-06-01 1974-02-19 Ind Electronic Engineers Display tube

Also Published As

Publication number Publication date
NL75979C (ro)
CH293923A (de) 1953-10-15
GB702263A (en) 1954-01-13
BE487996A (ro)
CH278394A (de) 1951-10-15
FR957510A (ro) 1950-02-23
BE478917A (ro)
GB684552A (en) 1952-12-17
DE972028C (de) 1959-05-06
GB702198A (en) 1954-01-13
BE488847A (ro)
GB684574A (en) 1952-12-17
NL80422C (ro)
DE972060C (de) 1959-05-14
FR60631E (fr) 1954-11-22
NL77382C (ro)
GB697642A (en) 1953-09-30
CH293922A (de) 1953-10-15
US2561057A (en) 1951-07-17
DE970182C (de) 1958-08-28
FR59153E (fr) 1954-05-06
US2532738A (en) 1950-12-05

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