US2532738A - Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam - Google Patents

Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam Download PDF

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US2532738A
US2532738A US76924A US7692449A US2532738A US 2532738 A US2532738 A US 2532738A US 76924 A US76924 A US 76924A US 7692449 A US7692449 A US 7692449A US 2532738 A US2532738 A US 2532738A
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United States
Prior art keywords
cathode
deflecting
ray beam
voltage
deflection
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Expired - Lifetime
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US76924A
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Six Willem
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

  • a circuit which comprises a cathoderay tube having means for the deflection of the cathode-ray beam, in which at one or more positions of the cathode-ray tubecurrent distribution takes place between at least two collecting electrodes, the current flowing in at least one of the circuits connected to one of the electrodes acting upon the deflection of the cathode ray beam in such manner that the beam is detained in the position concerned.
  • the current strength in at least one circuit connected to an electrode taking part in the current distribution exhibits, as a function of the deflection of the beam, a number of maxima and minima, the values of which vary monotonously and in the same sense as a function of deflection.
  • the present invention relates to a different solution of this problem and exhibits the characteristic that for moving the cathode-ray beam from one position into the other, the current strength of the cathode-ray beam is varied in such manner that the number of stable adjustments of the beam is reduced to two at the most, which variation in current strength is eliminated as soon as the variation in deflection of the oathode-ray beam brought about thereby is substantially equal to the deflection necessary for obtaining the position desired.
  • the cathode-ray tube shown in Fig. 1 comprises means known per se and here shown only diagrammatically, for generating a cathode-ray beam, a set of plates 2 for deflecting the beam, together with two collecting electrodes 3 and Q.
  • the electrode 3 is realized in such manner that at least part of the beam on being deflected either strikes the electrode 3 or the electrode 4. For this purpose it may exhibit, for example, suitably chosen apertures.
  • the electrode 3 is connected through a conductor 5 to the positive terminal of a source of supply, the negative terminal of which is connected to the cathode of the cathode-raytube. Furthermore the positive terminal of the source 2 of supply is connected by way of a resistance 6 and a conductor 1 to the collecting electrode 4, that extremity of resistance 6 which is remote from the source of supply being connected to one of the deflection plates.
  • the voltage V set up at the deflection plates and derived from the resistance 6 is furthermore in 1inear relation to the current is. flowing through the resistance 6., which relation is shown by a resistance line 9 in Fig. 2.
  • the resistance 6 is chosen to be such that the line 9 intersects the curve 8 at a number of points. It has been explained in the main application that the intersections li! up to 14 inclusive provide stable positions for the cathode-ray beam, the intersections between these points being labile. Assuming the cathode-ray beam to occupy a position which corresponds to the intersection 12 of the curve B and the straight line 9. This position corresponds to a deflecting voltage V1. Now, if the beam is desired to be moved to a position corresponding to the intersection H, which corresponds to a deflecting voltage Vz, this may be carried out with the circuit according to the invention in the following manner.
  • a positive voltage pulse which may exhibit, for example, the shape shown at It, is supplied to a control electrode P5 of the cathode-ray tube I.
  • Most of the intersections ID to M inclusive which were initially present are thus eliminated except the left-hand intersection which is only displaced and, as the case may be, the intersection located at the maximum deflection voltage.
  • the increase in current also results in an increase in voltage loss across the resistance 6, so that the total active deflecting voltage is reduced and the beam will move to the left-hand side.
  • the duration of the pulse It must be chosen to be such that the increase in current approximately ceases at the moment at which the beam has moved to the left through a distance which approximately justment at this stable point.
  • beam occupies a position correspondingto a defiection voltage smaller than Vs. (which voltage corresponds to the labile intersection It) there will already be a tendency tomove to thezstable point H.
  • the duration of the pulse is chosen to be such that the deflection of the extremity of the pulse corresponds to a voltage comprised between V4 and V5, corresponding to the two'extremes of curve 8 on each side of the desired stable adjustment, H.
  • An electrical circuit arrangement comprising an electron discharge tube having in the order named a source of an electron beam, of given electron density, deflecting means adapted to shift the position ofsaid'beam, a first collecting electrode and a second collecting electrode, an output circuit 7 comprising an impedance element coupled to said second, collecting electrode, means to derive a control'voltage from said" im- 4 l pedance element and to apply said control voltage to said deflecting means thereby to cause said beam to impinge on said first and second collectingelectrodes, and means tovar-y the current; distribution between said first. and second collecting electrodes comprising means to apply a signal voltage pulse to said source thereby to vary the electron density of said beam for a time 7 interval equal to the duration of said pulse.
  • An. electrical. circuit arrangement comprising an electron discharge tube having in the order namedi asource of an electron beam of given electron density, a pair of deflecting electrodes adapted to shift the position of said beam, a first collecting electrode and a second collecting, electrode, an output circuit comprising, aresistive element coupled to said second collecting electrode, means interconnecting said second collecting electrode and one of said defleeting electrodes to derive a control voltage from said resistive element and to apply said control voltage to said one deflecting electrode thereby to cause said beamto impinge on said firstand' second collecting electrodes, and means to vary the current distribution bet-ween said first and second collectingelectrodes comprising means toapply a signal voltage pulse to said source thereby to--vary' the electron density of said beam for a time interval equal to the-duration of'said pulse.

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  • 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)

Description

w. x EI'AL 2,532,738 ARRANGEMENT COMPRISING A CATHODE-RAY TUBE HAVING MEANS FOR DEFLECTING THE CATHODE-RAY BEAM Filed Feb. 1'7, 1949 Dec. 5, 1950 IN V EN TORS WILLEM SIX JOHAN LODEWIJK H. JONKER BAY W W AGENT Patented Dec. 5, 1950 OFFICE ARRANGEMENT COlliPRISING A CATHODE- RAY TUBE HAVING MEANS FOR DEFLECT- ING THE 'CATHODE-RAY BEAM Willem Six and Johan Lodewijk Hendrik Junker, Eindhoven, Netherlands, assignors to Hartford National Bank and Trust Company, Hartford,
Conn, as trustee Application February 17, 1949, Serial No. 76,9 2 4 In the Netherlands March 20, 1948 2 Claims.
In the main patent application No. 799,874 a circuit is described which comprises a cathoderay tube having means for the deflection of the cathode-ray beam, in which at one or more positions of the cathode-ray tubecurrent distribution takes place between at least two collecting electrodes, the current flowing in at least one of the circuits connected to one of the electrodes acting upon the deflection of the cathode ray beam in such manner that the beam is detained in the position concerned. In this circuit the current strength in at least one circuit connected to an electrode taking part in the current distribution exhibits, as a function of the deflection of the beam, a number of maxima and minima, the values of which vary monotonously and in the same sense as a function of deflection.
In a circuit of this kind there is a need of means for moving the cathode-ray beam from one position into the other, for which the main patent application already provides a number of solutions which substantialy utilise the variation in voltage at the deflection plates or the variation in current of the deflection coils.
The present invention relates to a different solution of this problem and exhibits the characteristic that for moving the cathode-ray beam from one position into the other, the current strength of the cathode-ray beam is varied in such manner that the number of stable adjustments of the beam is reduced to two at the most, which variation in current strength is eliminated as soon as the variation in deflection of the oathode-ray beam brought about thereby is substantially equal to the deflection necessary for obtaining the position desired.
In order that the invention may be more clearly understood and readily carried into efiect, it will now be described more fully by reference to the accompanying drawing.
The cathode-ray tube shown in Fig. 1 comprises means known per se and here shown only diagrammatically, for generating a cathode-ray beam, a set of plates 2 for deflecting the beam, together with two collecting electrodes 3 and Q. The electrode 3 is realized in such manner that at least part of the beam on being deflected either strikes the electrode 3 or the electrode 4. For this purpose it may exhibit, for example, suitably chosen apertures.
The electrode 3 is connected through a conductor 5 to the positive terminal of a source of supply, the negative terminal of which is connected to the cathode of the cathode-raytube. Furthermore the positive terminal of the source 2 of supply is connected by way of a resistance 6 and a conductor 1 to the collecting electrode 4, that extremity of resistance 6 which is remote from the source of supply being connected to one of the deflection plates.
In a circuit of this kind the current is traversing a circuit 1 as a function of the deflection which is determined by the voltage difierence V between the deflection plates, exhibits a plurality of maxima and minima as shown by curve 8 in Fig. 2. With suitable choice of the apertures in the electrode 3, the values of both the maxima and minima decrease monotonously when the deflection voltage increases.
The voltage V set up at the deflection plates and derived from the resistance 6 is furthermore in 1inear relation to the current is. flowing through the resistance 6., which relation is shown by a resistance line 9 in Fig. 2. The resistance 6 is chosen to be such that the line 9 intersects the curve 8 at a number of points. It has been explained in the main application that the intersections li! up to 14 inclusive provide stable positions for the cathode-ray beam, the intersections between these points being labile. Assuming the cathode-ray beam to occupy a position which corresponds to the intersection 12 of the curve B and the straight line 9. This position corresponds to a deflecting voltage V1. Now, if the beam is desired to be moved to a position corresponding to the intersection H, which corresponds to a deflecting voltage Vz, this may be carried out with the circuit according to the invention in the following manner.
A positive voltage pulse, which may exhibit, for example, the shape shown at It, is supplied to a control electrode P5 of the cathode-ray tube I. This results in an increase in current strength of the cathode-ray beam, so that the current flowing in the output circuit 1 will also increase, this higher current strength corresponding to a characteristic curve of the shape shown at l! in Fig. 2. Most of the intersections ID to M inclusive which were initially present are thus eliminated except the left-hand intersection which is only displaced and, as the case may be, the intersection located at the maximum deflection voltage. The increase in current also results in an increase in voltage loss across the resistance 6, so that the total active deflecting voltage is reduced and the beam will move to the left-hand side. The duration of the pulse It must be chosen to be such that the increase in current approximately ceases at the moment at which the beam has moved to the left through a distance which approximately justment at this stable point. beam occupies a position correspondingto a defiection voltage smaller than Vs. (which voltage corresponds to the labile intersection It) there will already be a tendency tomove to thezstable point H. It is preferable, however, to ensure that the duration of the pulse is chosen to be such that the deflection of the extremity of the pulse corresponds to a voltage comprised between V4 and V5, corresponding to the two'extremes of curve 8 on each side of the desired stable adjustment, H.
If a variation inpositionin the: othersense is desired, hence, for example, from point 12 to point- [3, this maybe ensured bysupplyingto a control electrode [5 a negative pulse of a value such that most of the stable adjustments disappear, whereupon the beam will move to the right-hand side and' may again be collected in the vicinity of the desired adjustment due to the pulse being discontinued.
What we claim is:
1. An electrical circuit arrangement, comprising an electron discharge tube having in the order named a source of an electron beam, of given electron density, deflecting means adapted to shift the position ofsaid'beam, a first collecting electrode and a second collecting electrode, an output circuit 7 comprising an impedance element coupled to said second, collecting electrode, means to derive a control'voltage from said" im- 4 l pedance element and to apply said control voltage to said deflecting means thereby to cause said beam to impinge on said first and second collectingelectrodes, and means tovar-y the current; distribution between said first. and second collecting electrodes comprising means to apply a signal voltage pulse to said source thereby to vary the electron density of said beam for a time 7 interval equal to the duration of said pulse.
2. An. electrical. circuit arrangement, comprising an electron discharge tube having in the order namedi asource of an electron beam of given electron density, a pair of deflecting electrodes adapted to shift the position of said beam, a first collecting electrode and a second collecting, electrode, an output circuit comprising, aresistive element coupled to said second collecting electrode, means interconnecting said second collecting electrode and one of said defleeting electrodes to derive a control voltage from said resistive element and to apply said control voltage to said one deflecting electrode thereby to cause said beamto impinge on said firstand' second collecting electrodes, and means to vary the current distribution bet-ween said first and second collectingelectrodes comprising means toapply a signal voltage pulse to said source thereby to--vary' the electron density of said beam for a time interval equal to the-duration of'said pulse.
WILLEM SIX. JOHAN LODEWIJK HENDRIK JONKER.
REFERENCES CITED The following references are oi record in the Name Date Meacham June 21, 1949 Number
US76924A 1946-10-23 1949-02-17 Arrangement comprising a cathoderay tube having means for deflecting the cathode-ray beam Expired - Lifetime US2532738A (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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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

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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

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Application Number Title Priority Date Filing Date
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

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US (3) US2591981A (en)
BE (3) BE488847A (en)
CH (3) CH278394A (en)
DE (3) DE970182C (en)
FR (3) FR59153E (en)
GB (5) GB684552A (en)
NL (3) NL75979C (en)

Cited By (4)

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US2588287A (en) * 1949-06-29 1952-03-04 Tesla Nat Corp Impulse metering device
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
US2617074A (en) * 1950-02-14 1952-11-04 Hartford Nat Bank & Trust Co Multianode cathode-ray tube circuit having a rapid flyback action
US2644909A (en) * 1950-03-06 1953-07-07 Hartford Nat Bank & Trust Co Circuit-arrangement comprising a cathode-ray tube

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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
DE961643C (en) * 1952-10-06 1957-04-11 Guenther H Krawinkel Dr Ing Electronic switch
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
GB1547964A (en) * 1975-07-11 1979-07-04 Emi Ltd Electron beam deflection arrangements

Citations (1)

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US2473691A (en) * 1947-08-05 1949-06-21 Bell Telephone Labor Inc Stabilization of cathode beam tubes

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US1257971A (en) * 1917-02-17 1918-03-05 Joseph Bethenod Generator of sustained electric oscillations.
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
DE708516C (en) * 1938-07-24 1941-07-23 Fernseh Gmbh Method for frequency division by means of a cathode ray tube
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
US2395299A (en) * 1939-11-13 1946-02-19 Bell Telephone Labor Inc Electron discharge apparatus
GB549358A (en) * 1941-04-01 1942-11-18 Ruben Hadekel Improvements in or relating to telegraph apparatus
US2446945A (en) * 1942-08-25 1948-08-10 Rca Corp Electronic computing device
US2390250A (en) * 1942-11-03 1945-12-04 Rca Corp Cathode ray tube and circuit
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
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US2473691A (en) * 1947-08-05 1949-06-21 Bell Telephone Labor Inc Stabilization of cathode beam tubes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US2588287A (en) * 1949-06-29 1952-03-04 Tesla Nat Corp Impulse metering device
US2617074A (en) * 1950-02-14 1952-11-04 Hartford Nat Bank & Trust Co Multianode cathode-ray tube circuit having a rapid flyback action
US2644909A (en) * 1950-03-06 1953-07-07 Hartford Nat Bank & Trust Co Circuit-arrangement comprising a cathode-ray tube

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GB684552A (en) 1952-12-17
CH293922A (en) 1953-10-15
FR59153E (en) 1954-05-06
NL80422C (en)
FR957510A (en) 1950-02-23
FR60631E (en) 1954-11-22
GB702198A (en) 1954-01-13
CH278394A (en) 1951-10-15
US2591981A (en) 1952-04-08
DE972028C (en) 1959-05-06
BE488847A (en)
GB697642A (en) 1953-09-30
US2561057A (en) 1951-07-17
DE972060C (en) 1959-05-14
NL75979C (en)
CH293923A (en) 1953-10-15
GB702263A (en) 1954-01-13
DE970182C (en) 1958-08-28
BE487996A (en)
NL77382C (en)
GB684574A (en) 1952-12-17
BE478917A (en)

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