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US2317460A - Electron ray indicating device - Google Patents

Electron ray indicating device Download PDF

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Publication number
US2317460A
US2317460A US346918A US34691840A US2317460A US 2317460 A US2317460 A US 2317460A US 346918 A US346918 A US 346918A US 34691840 A US34691840 A US 34691840A US 2317460 A US2317460 A US 2317460A
Authority
US
United States
Prior art keywords
potential
anode
resistor
control electrodes
tube
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
US346918A
Other languages
English (en)
Inventor
Hultquist J Albert
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.)
RCA Corp
Original Assignee
RCA Corp
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 BE512116D priority Critical patent/BE512116A/xx
Priority to BE501567D priority patent/BE501567A/xx
Priority to NL7811513.A priority patent/NL168257B/xx
Priority to NL7312698.A priority patent/NL159457B/xx
Priority to NL76700D priority patent/NL76700C/xx
Priority to BE501568D priority patent/BE501568A/xx
Priority to BE507046D priority patent/BE507046A/xx
Priority to NL89130D priority patent/NL89130C/xx
Priority to NL78923D priority patent/NL78923C/xx
Priority to BE513971D priority patent/BE513971A/xx
Priority to BE504546D priority patent/BE504546A/xx
Priority to DEST19796A priority patent/DE1252326B/de
Priority to NL81844D priority patent/NL81844C/xx
Application filed by RCA Corp filed Critical RCA Corp
Priority to US346918A priority patent/US2317460A/en
Priority to US423705A priority patent/US2394857A/en
Application granted granted Critical
Publication of US2317460A publication Critical patent/US2317460A/en
Priority to US606830A priority patent/US2513908A/en
Priority to DEL14079U priority patent/DE1790489U/de
Priority to DEL3021A priority patent/DE950945C/de
Priority to DEL6265A priority patent/DE950946C/de
Priority to US209146A priority patent/US2749465A/en
Priority to CH293273D priority patent/CH293273A/de
Priority to CH299070D priority patent/CH299070A/de
Priority to GB3818/51A priority patent/GB727133A/en
Priority to GB4468/51A priority patent/GB700192A/en
Priority to FR61447D priority patent/FR61447E/fr
Priority to FR1033240D priority patent/FR1033240A/fr
Priority to DEL8579A priority patent/DE973132C/de
Priority to GB15488/51A priority patent/GB703660A/en
Priority to FR65210D priority patent/FR65210E/fr
Priority to DEL10017A priority patent/DE967560C/de
Priority to GB26285/51A priority patent/GB742466A/en
Priority to FR65361D priority patent/FR65361E/fr
Priority to US256941A priority patent/US2712612A/en
Priority to GB28149/51A priority patent/GB721460A/en
Priority to DET5400A priority patent/DE909008C/de
Priority to FR1059872D priority patent/FR1059872A/fr
Priority to GB7382/52A priority patent/GB730548A/en
Priority to GB19518/53A priority patent/GB737668A/en
Priority to US307188A priority patent/US2820916A/en
Priority to FR65462D priority patent/FR65462E/fr
Priority to DES31179A priority patent/DE1029940B/de
Priority to DEP13761A priority patent/DE1038201B/de
Priority to GB25960/56A priority patent/GB838078A/en
Priority to US645746A priority patent/US2927237A/en
Priority to DEST16366A priority patent/DE1121234B/de
Anticipated expiration legal-status Critical
Priority to US101296A priority patent/US3161800A/en
Priority to FR858793A priority patent/FR1286382A/fr
Priority to GB13575/61A priority patent/GB978223A/en
Priority to DE19661564490 priority patent/DE1564490B1/de
Priority to SE1761/67A priority patent/SE313122B/xx
Priority to AT119967A priority patent/AT269298B/de
Priority to NL6701866A priority patent/NL6701866A/xx
Priority to GB5965/67A priority patent/GB1165995A/en
Priority to CH187367A priority patent/CH455948A/de
Priority to ES336625A priority patent/ES336625A1/es
Priority to FR94634A priority patent/FR1511277A/fr
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/86—Hydrazides; Thio or imino analogues thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/14—Magic-eye or analogous tuning indicators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye

Definitions

  • invention relates to electron ray indicator tubes and, more particularly, to a tuning indica- -tor for frequency modulation receivers.
  • indicating correct tuning of frequency modulation receivers depend on the use of a meter or electron ray tube so connected as to give an indication proportional to the voltage developed on the grid of the limiter stage in the receiver, a very sensitive zero center voltmeter across the output of the discriminator stage, or a dual shadow electron ray tube with one of its associated amplifiers connected to one end of the discriminator output circuit and the other connected as a phase inverter.
  • Correct tuning in the first mentioned system is indicated by a maximum grid potential or a closure of the shadow of the electron ray tube.
  • this system is rather insensitive to variations in tuning since the response characteristic of the tuned circuits in the receiver is quite broad. It is, therefore, difficult to adjust the receiver for equal response to equal frequency deviations on each side of the midfrequency.
  • the maximum response at this point in the receiver has no relation to the tuning of the discriminator stage and if any change in tuning takes place there the tuning indicator can no longer be relied upon.
  • An object, therefore, of the present invention is to overcome the above mentioned difficulties.
  • a further object of the present invention is the provision of a simple, inexpensive system for indicating correct tuning of a frequency modulation receiver.
  • Another object of the present invention is to provide electron discharge apparatus giving an indication in the form of a plurality of substantially triangular shadow areas with variable length bases, said bases being closely adjacent for ready comparison.
  • Still a further object is the provision of a novel method for the comparison of the relative magnitudes of a pair of independent potentials.
  • a novel form of electron ray indicator tube having a luminous coating on an anode in the form of a pair of intersecting plane surfaces between a'pair of separate emitting cathodes and shadow control electrodes. lhe line of intersection of the planes is in a plane perpendicular to a line between said cathodes. Electron beams from each of thecathodes impinging on the adjacent surface'of the anode cause the luminous material thereon to fiuoresce.
  • the control electrodes cast triangular shadows on the anode, the width of the shadow at the apex of the anode being proportional to the voltage applied to the ray control electrodes. Since the widest parts of the shadows are closely adjacent they may be readily compared.
  • the present invention may also be embodied in a pair of conventional single shadow electron ray tubes with their areas placed as closely adjacent as possible, or a tube of the type disclosed in a prior Roberts Patent #2,175,700, granted October 10, 1939, may be utilized, interposing between the end of the tube and the eye of the observer a pair of reversing prisms so that the widest parts of the shadows appear adjacent to each other.
  • Figure 1 is a circuit diagram illustrating the application of my invention to the discriminator circuit of a frequency modulation receiver
  • Figure 2 illustrates the type of indication given by heretofore known double shadow electron ray indicator tubes in a circuit as shown in Figur 1
  • Figure 3 is an end view of an embodiment of the present invention and illustrates the indication given when employed in a circuit as shown in Figure 1
  • Figure 4 is a view partly in section of an embodiment of Figure 3, while Figures 5 and 6 illustrate modifications of the invention.
  • I'll indicates generally a discriminator transformer of the frequency modulation receiver. Frequency modulated signals of a nst'ant amplitude are applied to the primary H. To the secondary I2 of the transformer are connected the anodes of rectifier tube I l. The windings of the transformer are tuned to the desired frequency by means of adjustable condensers l3, I3. Across the cathodes of rectifier I4 is connected an output circuit comprising resistors I5, l6 shunted by radio frequency'by-pass conde' ers ll, I8. One end of the output circuit is grounded and the other end is connected to an audio frequency load circuit, as indicated by lead 20. The junction between resistors l and I6 is connected through a radio frequency choke 2
  • the discriminator circuit does not form a part of the present invention and the theory of its operation will not here be gone into. However, it is important to understand that when the circuit is properly tuned to a signal to be received the potential across resistor I5 is equal in magnitude and opposite in polarity to that across resistor l6. Therefore, no D. C. potential difierence exists between lead and ground. On one side of resonance 23 will become positive due to an increase in potential across resistor l5 and a decrease across resistor l6, while on the other side of resonance the reverse condition will be true.
  • the theory of operation of the discriminator circuit is more completely discussed in a Seeley Patent #2,l21,l03, granted June 21, 1938, and reference maybe made to that patent for a further disclosure.
  • a grid 27 of an amplifier and phase inverter tube 28 is connected to the upper end of load circuit l5, IS.
  • the time constant of circuit 25, should be high enough that the audio frequency signal is filtered out and does not appear on grid 21.
  • Dual triode amplifier tube 28 may, of course, be replaced by a pair of physically separate triodes, if desired.
  • Anodes 23 and 30 of the amplifier tube 28 are connected to the positive sides of a source of anode potential indicated as B+ through resistors 3
  • Indicator tube 33 has ray control electrodes 34 and 35 connected to anodes 29 and 3! respectively.
  • the anode 33 of indicator tube 33 and its cathodes 31, 38 are connected to the anode supply source in the conventional manner.
  • , 32 and the common cathode resistor 39 associated with tube 28 are so adjusted that with no potential on grid 2'! equal potentials, somewhat lower than the potential on anode or target 33, are impressed on ray control electrodes 34, 35 of indicator tube 33.
  • the shadows cast on the luminous surface of anode 36 are, therefore, of equal size.
  • the lengths of arcs :c and y of the shaded portions of the pattern are equal when the receiver is properly tuned to the incoming signal. Likewise, when the receiver is tuned to a frequency remote from any signal applied to the receiver the same indication is obtained. As the tuning of the receiver is varied and resonance with a received signal is approached, the length of the arc of one of the shaded areas increases and that of the other decreases until a certain ratio, dependent upon the constants of the circuits and the strength of the signal, is attained. Then as resonance is still more closely approached the larger shaded area decreases in size and the smaller one increases until the lengths of arcs :1: and y are again equal. The receiver is then correctly tuned.
  • Figure 4 shows partly in section a perspective View of a tube constructed according to my invention.
  • the form of the bi-planar anode or target 36 is clearly shown in this figure.
  • Ray control electrodes 34 and 35 and cathodes 31 and 38 are constructed in the same manner as described in the heretofore mentioned Roberts patent.
  • are provided over the ends of the cathode and ray control electrodes in order to shield the eye of the observer from the direct light of the cathodes and in order to prevent fluorescence of the glass envelope 42 of the tube.
  • maybe substituted for supporting rods 43 in order to prevent fluorescence on the sides of the glass envelope 42'.
  • Grids 31' and 38' may surround cathodes 31 and 38 for limiting the space cur rent drawn from the cathodes if desired.
  • the elements within the glass envelope 42 are supported in position by support rods 45 and mica discs 45, as is customary practice in theconstruction of thermionic discharge tubes.
  • FIG. 5 A modification of the present invention is indicated in Figure 5 wherein the diamond shaped shadow effect is obtained by using a pair of con-, ventional single shadow electron ray indicator tubes of the type generally. known in the art as 6U5/6G5 tubes. These tubes 'incorporatewithgenerally by reference character 50.
  • FIG. 6 A further modification is shown in Figure 6 wherein an electron ray tube of the type shown in the Roberts Patent #2,1'75,700 is used in the circuit shown in Figure 1.
  • the tube is indicated
  • a pair of reversing prisms and 52 are placed between the end of the tube 50 and the eye of the observer.
  • These prisms may be formed of glass or any of the recently discovered transparent synthetic plastics such as Lucite.
  • and 52 is well understood by those skilled in optical art and it is not believed necessary to discuss their operation further than to say that because of their interposition the widest parts of the shadow areas on anode 53 of tube 50 appear to be closely adjacent so that they may be readily compared.
  • an instantaneous check of the condition of the indicating system may be had by tuning the receiver away from any signal or by removing the rectifier tube M.
  • the absence of a diamond-shaped shadow area as shown in Figure 3 indicates that the balance of the indicating circuit has become disturbed through variation of the circuit elements or aging of the tubes.
  • Resistors 31 and 32 must be varied to again arrive at a balance or amplifier tube 28 and/or indicator 3'3 replaced.
  • the method of determining the amplitude relationship of a pair of variable potentials which comprises electrically producing a pair of luminous areas, said areas appearing adjacent one another, producing substantially triangular shadows on said areas, the bas lengths of each of said triangular shadows being visually in contact with one another throughout their lengths and controlling the base lengths of each of said shadows in accordance with the amplitude of one of said potentials.
  • Means for determining the amplitude relationship between a pair of variable potentials including a target coated with a fluorescent material, means for bombarding said target with electrons to produce a luminous pattern, control electrodes for deflecting electrons from two zones of said pattern to produce substantially triangular shadow areas, said areas, having a constant height and a variable base length, the bases of each of said areas visually appearing substantially in contact with one another throughout their length and means for applying one of said potentials to each of said control electrodes.
  • a resistor adapted to have a potential varying in polarity and amplitude impressed thereacross
  • a thermionic discharge tube having a bi-pla'nar anode with a luminous material thereon, means for directing a stream of electrons on adjacent areas of said anode, ray control electrodes adapted to cast triangular shadows on the luminous areas of said anode, said triangular shadows having constant heights and bases variable in length in proportion to potentials applied to said ray control electrodes, said bases appearing adjacent each other whereby their equality may be visually determined, means for varying the potential on one of said control electrodes in direct proportion to the potential across said resistor and means for varying the potential on the other of said control electrodes in inverse proportion to the potential across said resistor, said potential varying means being so adjusted that for zero potential across said resistor said triangular shadows form a diamond-shaped figure.
  • a resistor adapted to have a potential varying in polarity and amplitude impressed thereacross
  • a thermionic discharge tube having an anode in the form of a pair of intersecting plane surfaces, said anode having a luminescent material thereon, a pair of cathodes for directing a stream of electrons on adjacent areas of said anode whereby said areas become luminous
  • ray control electrodes adapted to cast triangular shadows on said luminous areas, said triangular shadows having constant heights and bases variable about a mean length in proportion to potentials applied to said ray control electrodes, said bases appearing adjacent each other whereby their equality may be visually determined
  • a resistor adapted to have a potential varying in polarity and amplitude impressed thereacross, a thermionic discharge tube having a cathode, a dish-shaped anode surrounding said cathode and having its interior surface coated with a fluorescent material for receiving electrons from said cathode to produce a luminescence on said anode, a pair of control electrodes disposed on opposite sides of said cathod and positioned between the cathode and anode for casting substantially triangular shadow areas on the fluorescent surface of the anode, means for impressing a potential on one of said control electrodes directly proportioned to the potential on said resistor, means for impressing a potential on the other of said control electrodes inversely proportional to the potential on said resistor and means for so modifying the appearance of the pattern cast by said control electrodes that the widest portions of said pattern appear adjacent one another.
  • a resistor adapted to have a potential varying in polarity and amplitude impressed thereacross, a thermionic dis-'- charge tube having a cathode, a dish-shaped anode surrounding said cathode and having its interior surface coated with a fluorescent material for receiving electrons from said cathode to produce a luminescence on said anode, a pair of control electrodes disposed on opposite sides of said cathode and positioned between the cathode and anode for casting substantially triangular shadow areas on the fluorescent surface of the anode, means for impressing a potential on one of said control electrodes directly proportioned to the potential on said resistor, means for impressing a potential on the other of said control electrodes inversely proportional to the potential on said resistor, and a pair of reversing prisms over said dish-shaped anode for causing the outer edges of said shadow areas to appear adjacent one another.
  • a resistor adapted to have a potential varying in polarity and amplitude impressed thereacross
  • thermionic discharge apparatus having a pair of anode surfaces with luminous material thereon, means for directing a stream of electrons on said surfaces, ray control electrodes adapted to cast triangular shadows on said luminous areas, said triangular shadows having constant heights and basesvariable in length in proportion to potentials applied to said ray control electrodes, said bases appearing adjacent each other whereby their equality may be visually determined, means for varying the potential on one of said control electrodes in direct proportion about a mean value to the potential across said resistor and means for varying the potential on the other of said control electrodes in inverse proportion about a mean value to the potential across said resistor, said potential varying means being so adjusted that for zero potential across said resistor said trangular shadows form a diamond-shaped figure.
  • the method of determining the amplitude relationship between a pair of variable potentials comprising the steps of producing a pair of shadows, each having one constant dimension and one variable dimension, the variable dimension of said shadows appearing visually in contact with one another and controlling the magnitude of said variable dimension of each of said shadows in accordance with the amplitude of one of said potentials.
  • the method of determining the amplitude relationship between a pair of variable potentials comprising the steps of producing a pair of shadows having at least one variable dimension, the said dimension of said shadows appearing in contact with one another throughout the length of at least one of said shadows and controlling the magnitud of said dimension of each of said shadows in accordance with the amplitude of one of said potentials.
  • a resistor adapted to have a potential varying in polarity and amplitude impressed thereacross
  • thermionic discharge apparatus having luminescent anode surfaces, means for directing electron streams on said surfaces, ray control electrodes adapted to deflect said streams from portions of said surfaces to cause substantially triangular shadows thereon, said triangular shadows having bases variable in length in proportion to potentials supplied to said ray control electrodes, said bases appearing in contact with each other whereby their equality may be visually determined, means for varying th potential on one of said control electrodes in direct proportion about a mean value to the potential across said resistor and means for varying the potential on the other of said control electrodes in inverse proportion about a mean value to the potential across said resistor, said potential varying means being so adjusted that for zero potential across said resistor said triangular shadows form a diamond-shaped figure.

Landscapes

  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Measurement Of Radiation (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Radiation-Therapy Devices (AREA)
  • Details Of Television Scanning (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
US346918A 1940-07-23 1940-07-23 Electron ray indicating device Expired - Lifetime US2317460A (en)

Priority Applications (56)

Application Number Priority Date Filing Date Title
BE512116D BE512116A (da) 1940-07-23
BE501567D BE501567A (da) 1940-07-23
NL7811513.A NL168257B (nl) 1940-07-23 Onder druk staand aerosolpreparaat en houder met aero- solpreparaat.
NL7312698.A NL159457B (nl) 1940-07-23 Verbindingsorgaan voor een ruimtevakwerk.
NL76700D NL76700C (da) 1940-07-23
BE501568D BE501568A (da) 1940-07-23
BE507046D BE507046A (da) 1940-07-23
NL89130D NL89130C (da) 1940-07-23
NL78923D NL78923C (da) 1940-07-23
BE513971D BE513971A (da) 1940-07-23
BE504546D BE504546A (da) 1940-07-23
DEST19796A DE1252326B (da) 1940-07-23
NL81844D NL81844C (da) 1940-07-23
US346918A US2317460A (en) 1940-07-23 1940-07-23 Electron ray indicating device
US423705A US2394857A (en) 1940-07-23 1941-12-20 Electron ray indicating device
US606830A US2513908A (en) 1940-07-23 1945-07-24 Electric discharge device of the indicator type
DEL14079U DE1790489U (de) 1940-07-23 1950-07-08 Thermometerartige spannungsanzeigeroehre.
DEL3021A DE950945C (de) 1940-07-23 1950-07-09 Spannungsanzeigeroehre, insbesondere Abstimmanzeigeroehre fuer Rundfunkgeraete, mit einem Anzeigesystem und einem weiteren, von ihm unabhaengigen Elektrodensystem fuer andere Zwecke
DEL6265A DE950946C (de) 1940-07-23 1950-11-12 Spannungsvergleichsanzeigeroehre
US209146A US2749465A (en) 1940-07-23 1951-02-02 Visual indicating device for electric voltages
CH293273D CH293273A (de) 1940-07-23 1951-02-06 Insbesondere zur Abstimmanzeige dienende optische Anzeigevorrichtung für elektrische Spannungen.
CH299070D CH299070A (de) 1940-07-23 1951-02-06 Optische Anzeigevorrichtung für elektrische Spannungen, insbesondere zur Abstimmanzeige in Rundfunkgeräten.
GB3818/51A GB727133A (en) 1940-07-23 1951-02-16 Electron discharge device for visually indicating voltages
GB4468/51A GB700192A (en) 1940-07-23 1951-02-23 Improvements in or relating to visual tuning indicator electron discharge tubes
FR61447D FR61447E (fr) 1940-07-23 1951-02-28 Dispositif indicateur optique pour tension électrique, notamment pour l'indication d'accord dans les appareils de t.s.f.
FR1033240D FR1033240A (fr) 1940-07-23 1951-02-28 Dispositif indicateur optique pour tension électrique, notamment pour l'indication d'accord dans les appareils de t. s. f.
DEL8579A DE973132C (de) 1940-07-23 1951-03-21 Spannungsvergleichsanzeigeroehre
GB15488/51A GB703660A (en) 1940-07-23 1951-06-29 Voltage indicator tube, particularly tuning indicator tube
FR65210D FR65210E (fr) 1940-07-23 1951-07-06 Dispositif indicateur optique pour tension électrique notamment pour l'indication d'accord dans les appareils de t.s.f.
DEL10017A DE967560C (de) 1940-07-23 1951-09-06 Optische Anzeigeroehre fuer elektrische Spannungen
GB26285/51A GB742466A (en) 1940-07-23 1951-11-02 Voltage indicator tube
FR65361D FR65361E (fr) 1940-07-23 1951-11-09 Dispositif indicateur optique pour tension électrique notamment pour l'indication d'accord dans les appareils de t.s.f.
US256941A US2712612A (en) 1940-07-23 1951-11-10 Voltage reference indicating valve
GB28149/51A GB721460A (en) 1940-07-23 1951-11-30 Voltage indicating valve
DET5400A DE909008C (de) 1940-07-23 1951-12-06 Abstimmanzeigeroehre
FR1059872D FR1059872A (fr) 1940-07-23 1952-03-20 Tubes indicateurs et comparateurs de tension
GB7382/52A GB730548A (en) 1940-07-23 1952-03-21 Tuning indicator valve
GB19518/53A GB737668A (en) 1940-07-23 1952-08-01 Tuning indicator valve of small dimension and a high sensitivity
US307188A US2820916A (en) 1940-07-23 1952-08-30 Tuning indicator valve of small dimension and a high sensitivity
FR65462D FR65462E (fr) 1940-07-23 1952-09-01 Dispositif indicateur optique pour tensions électriques notamment pour l'indication d'accord dans les appareils de t.s.f.
DES31179A DE1029940B (de) 1940-07-23 1952-11-24 Trockengleichrichtersystem mit tablettenfoermigen Gleichrichterelementen
DEP13761A DE1038201B (de) 1940-07-23 1955-03-14 Spannungsanzeigeroehre
GB25960/56A GB838078A (en) 1940-07-23 1956-08-24 Thermometer type voltage indicator tube
US645746A US2927237A (en) 1940-07-23 1957-03-13 Voltage indicator tubes
DEST16366A DE1121234B (de) 1940-07-23 1960-04-16 Anzeigeroehre mit zwei Anzeigesystemen
US101296A US3161800A (en) 1940-07-23 1961-04-06 Indicator tube having two indication systems
FR858793A FR1286382A (fr) 1940-07-23 1961-04-14 Tube indicateur cathodique
GB13575/61A GB978223A (en) 1940-07-23 1961-04-14 Voltage indicator tube having two indicator systems
DE19661564490 DE1564490B1 (de) 1940-07-23 1966-02-11 Anzeigeroehre fuer zwei Spannungen
SE1761/67A SE313122B (da) 1940-07-23 1967-02-08
AT119967A AT269298B (de) 1940-07-23 1967-02-08 Anzeigeröhre (Magisches Auge) zur optischen Unterscheidung eines monauralen von einem Stereosignal
NL6701866A NL6701866A (da) 1940-07-23 1967-02-08
GB5965/67A GB1165995A (en) 1940-07-23 1967-02-08 Cathode Ray Indicator Tube
CH187367A CH455948A (de) 1940-07-23 1967-02-08 Anzeigeröhre zur optischen Unterscheidung eines monauralen von einem Stereosignal
ES336625A ES336625A1 (es) 1940-07-23 1967-02-09 Un dispositivo de tubo indicador.
FR94634A FR1511277A (fr) 1940-07-23 1967-02-13 Indicateur cathodique

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US346918A US2317460A (en) 1940-07-23 1940-07-23 Electron ray indicating device
US423705A US2394857A (en) 1940-07-23 1941-12-20 Electron ray indicating device
DE703660X 1950-07-08
DEL14079U DE1790489U (de) 1940-07-23 1950-07-08 Thermometerartige spannungsanzeigeroehre.
DE742466X 1950-11-11
DE737668X 1951-09-05
DEST16366A DE1121234B (de) 1940-07-23 1960-04-16 Anzeigeroehre mit zwei Anzeigesystemen
DEP0038757 1966-02-11

Publications (1)

Publication Number Publication Date
US2317460A true US2317460A (en) 1943-04-27

Family

ID=32913417

Family Applications (6)

Application Number Title Priority Date Filing Date
US346918A Expired - Lifetime US2317460A (en) 1940-07-23 1940-07-23 Electron ray indicating device
US423705A Expired - Lifetime US2394857A (en) 1940-07-23 1941-12-20 Electron ray indicating device
US209146A Expired - Lifetime US2749465A (en) 1940-07-23 1951-02-02 Visual indicating device for electric voltages
US256941A Expired - Lifetime US2712612A (en) 1940-07-23 1951-11-10 Voltage reference indicating valve
US307188A Expired - Lifetime US2820916A (en) 1940-07-23 1952-08-30 Tuning indicator valve of small dimension and a high sensitivity
US101296A Expired - Lifetime US3161800A (en) 1940-07-23 1961-04-06 Indicator tube having two indication systems

Family Applications After (5)

Application Number Title Priority Date Filing Date
US423705A Expired - Lifetime US2394857A (en) 1940-07-23 1941-12-20 Electron ray indicating device
US209146A Expired - Lifetime US2749465A (en) 1940-07-23 1951-02-02 Visual indicating device for electric voltages
US256941A Expired - Lifetime US2712612A (en) 1940-07-23 1951-11-10 Voltage reference indicating valve
US307188A Expired - Lifetime US2820916A (en) 1940-07-23 1952-08-30 Tuning indicator valve of small dimension and a high sensitivity
US101296A Expired - Lifetime US3161800A (en) 1940-07-23 1961-04-06 Indicator tube having two indication systems

Country Status (10)

Country Link
US (6) US2317460A (da)
AT (1) AT269298B (da)
BE (6) BE507046A (da)
CH (1) CH455948A (da)
DE (4) DE1790489U (da)
ES (1) ES336625A1 (da)
FR (7) FR61447E (da)
GB (10) GB727133A (da)
NL (7) NL6701866A (da)
SE (1) SE313122B (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045557B (de) * 1957-07-04 1958-12-04 Tesla Np Abstimmanzeigeroehre mit seitlich angeordneten leuchtenden Flaechen
DE1059053B (de) * 1957-04-20 1959-06-11 Loewe Opta Ag Abstimmanzeigeeinrichtung mit vergleichender Abstimmanzeige fuer Hochfrequenzempfangsgeraete
DE1069674B (da) * 1959-11-26

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE501567A (da) * 1940-07-23
US2513908A (en) * 1940-07-23 1950-07-04 Gen Electric Electric discharge device of the indicator type
DE950946C (de) * 1940-07-23 1956-10-18 Lorenz C Ag Spannungsvergleichsanzeigeroehre
DE973132C (de) * 1940-07-23 1959-12-10 Standard Elek K Lorenz Ag Spannungsvergleichsanzeigeroehre
CH291029A (de) * 1949-09-09 1953-05-31 Siemens Ag Elektronenröhre mit Leuchtschirm, insbesondere zur Abstimmanzeige.
US2600063A (en) * 1951-02-20 1952-06-10 Leon S Maloof Visual electron flow indicator
US2799790A (en) * 1951-05-19 1957-07-16 Int Standard Electric Corp Multi-range voltage indicating valve
US2736834A (en) * 1951-08-10 1956-02-28 Hartford Nat Bank & Trust Co Electron discharge tube comprising a luminescent screen
BE517504A (da) * 1952-02-08
BE518559A (da) * 1952-03-20
BE519456A (da) * 1952-04-26
US2767341A (en) * 1952-08-12 1956-10-16 Dunlee Corp Anode structure for double filament x-ray tube
DE1029490B (de) * 1952-10-01 1958-05-08 Telefunken Gmbh Anzeigeroehre mit zwei unabhaengig voneinander steuerbaren, parallel zur Kathode liegenden Ablenkelektroden oder Elektrodensystemen
US2954493A (en) * 1959-06-08 1960-09-27 Sylvania Electric Prod Flip-flop indicator
GB2144575B (en) * 1983-08-05 1988-04-20 English Electric Valve Co Ltd Cathedolumanescent display arrangements

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US2108880A (en) * 1934-04-27 1938-02-22 Rca Corp Electric discharge tube
GB469755A (en) * 1934-10-30 1937-07-26 Bbc Brown Boveri & Cie Improvements in and relating to electric, astatic regulating arrangements
US2051188A (en) * 1935-06-27 1936-08-18 Rca Corp Tuning indicator tube
US2219506A (en) * 1936-10-08 1940-10-29 Telefunken Gmbh Tuning indicator circuit
US2243034A (en) * 1937-06-03 1941-05-20 Hygrade Sylvania Corp Fluorescent indicating device
US2105818A (en) * 1937-06-22 1938-01-18 Rogers Radio Tubes Ltd Voltage indicating electron discharge tube
US2311672A (en) * 1937-08-06 1943-02-23 Raytheon Production Corp Electron discharge tube with fluorescent screen
BE430426A (da) * 1937-09-29
US2175700A (en) * 1938-03-29 1939-10-10 Rca Corp Electronic indicating device
US2243408A (en) * 1938-05-12 1941-05-27 Rca Corp Visual tuning indicator
BE434519A (da) * 1938-05-27
US2273800A (en) * 1939-08-09 1942-02-17 Hygrade Sylvania Corp Fluorescent type indicator tube
BE443535A (da) * 1940-05-10
DE1038201B (de) * 1940-07-23 1958-09-04 Philips Patentverwaltung Spannungsanzeigeroehre
BE501567A (da) * 1940-07-23
DE909008C (de) * 1940-07-23 1954-04-12 Telefunken Gmbh Abstimmanzeigeroehre
US2513908A (en) * 1940-07-23 1950-07-04 Gen Electric Electric discharge device of the indicator type
US2927237A (en) * 1940-07-23 1960-03-01 Int Standard Electric Corp Voltage indicator tubes
DE1029940B (de) * 1940-07-23 1958-05-14 Siemens Ag Trockengleichrichtersystem mit tablettenfoermigen Gleichrichterelementen
DE973132C (de) * 1940-07-23 1959-12-10 Standard Elek K Lorenz Ag Spannungsvergleichsanzeigeroehre
US2315945A (en) * 1941-12-26 1943-04-06 Gen Electric Calibrating device
US2318140A (en) * 1942-03-30 1943-05-04 Leeds & Northrup Co Visual indicator
US2366320A (en) * 1942-08-29 1945-01-02 Rca Corp Voltage indicator
CH291029A (de) * 1949-09-09 1953-05-31 Siemens Ag Elektronenröhre mit Leuchtschirm, insbesondere zur Abstimmanzeige.
BE517504A (da) * 1952-02-08
DE1059116B (de) * 1954-04-28 1959-06-11 Standard Elektrik Lorenz Ag Abstimmanzeigeroehre
GB829553A (en) * 1955-11-21 1960-03-02 Arthur Adams Cellular back loud-speaker enclosure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069674B (da) * 1959-11-26
DE1059053B (de) * 1957-04-20 1959-06-11 Loewe Opta Ag Abstimmanzeigeeinrichtung mit vergleichender Abstimmanzeige fuer Hochfrequenzempfangsgeraete
DE1045557B (de) * 1957-07-04 1958-12-04 Tesla Np Abstimmanzeigeroehre mit seitlich angeordneten leuchtenden Flaechen

Also Published As

Publication number Publication date
FR1511277A (fr) 1968-01-26
GB700192A (en) 1953-11-25
DE1790489U (de) 1959-06-18
FR1059872A (fr) 1954-03-29
FR65210E (fr) 1956-02-07
NL78923C (da)
GB838078A (en) 1960-06-22
GB742466A (en) 1955-12-30
US2394857A (en) 1946-02-12
DE1252326B (da)
US2712612A (en) 1955-07-05
NL76700C (da)
NL6701866A (da) 1967-08-14
NL159457B (nl)
NL81844C (da)
GB727133A (en) 1955-03-30
BE507046A (da)
BE513971A (da)
ES336625A1 (es) 1968-01-01
GB703660A (en) 1954-02-10
AT269298B (de) 1969-03-10
FR61447E (fr) 1955-05-04
BE512116A (da)
SE313122B (da) 1969-08-04
US2749465A (en) 1956-06-05
NL168257B (nl)
DE1121234B (de) 1962-01-04
GB721460A (en) 1955-01-05
GB978223A (en) 1964-12-16
BE501567A (da)
FR65462E (fr) 1956-02-21
GB1165995A (en) 1969-10-01
CH455948A (de) 1968-05-15
BE504546A (da)
FR65361E (fr) 1956-02-09
GB737668A (en) 1955-09-28
US2820916A (en) 1958-01-21
US3161800A (en) 1964-12-15
FR1033240A (fr) 1953-07-09
BE501568A (da)
DE1564490B1 (de) 1970-08-20
GB730548A (en) 1955-05-25
NL89130C (da)

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