US2577352A - Device comprising a glow discharge tube - Google Patents

Device comprising a glow discharge tube Download PDF

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Publication number
US2577352A
US2577352A US66634A US6663448A US2577352A US 2577352 A US2577352 A US 2577352A US 66634 A US66634 A US 66634A US 6663448 A US6663448 A US 6663448A US 2577352 A US2577352 A US 2577352A
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US
United States
Prior art keywords
tube
cathode
glow discharge
anode
discharge tube
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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
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US66634A
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English (en)
Inventor
Mulder Johannes Gijsbe Wilhelm
Penning Frans Michel
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.)
Hartford National Bank and Trust Co
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Hartford National Bank and Trust Co
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
Application filed by Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/30—Igniting arrangements

Definitions

  • a glow discharge tube the cathode of which consists of a metal having a melting point exceeding 1400 C. and substantially the entire wall of which tube is coated with a visible layer of such metal, thus tube is provided with at least one auxiliary electrode, between which auxiliary electrode and a main electrode or a second auxiliary electrode, an auxiliary current is caused to flow which lies in the Townsend area of the glow-discharge characteristic curve.
  • FIG. 1 is a perspective view of the tube suitable for a device according to the invention, and Fig. 2 shows a circuit-arrangement comprising such a tube, and Fig. 3 is a cross-sectional view of the tube illustrating the relation of the metal coating to the tube element.
  • the reference numeral l designates the glass wall (partly broken away) of the discharge tube.
  • the cathode 4 consisting of a slightly V- shaped sheet of molybdenum.
  • the anode consists of a piece of molybdenum wire 5 which is also carried by a chrome-iron pin and placed at a distance of 0.5 to 0.8 mm. from any of the cathode wings.
  • the gas filling consists of neon and 1% of argon at a pressure of 30 mm. With a current of approximately 2.5 a amp, both the front and the back of the cathode is covered with the glow.
  • the ignition voltage is 120 v.
  • auxiliary anode does not carry current and the delay may amount to many seconds. If a current of 1 to 5 a amp. flows in the auxiliary anode the ignition voltage of the tube is 11510.5 volts. In this event delay of ignition no longer occurs.
  • the layer of metal on the inner wall of the discharge tube is not shown in the drawing for the sake of clearness.
  • a glow discharge tube is designated H, the cathode l2 and the anode l3.
  • the terminals [4 and I5 of the direct current network are connected to the cathode of the glow discharge tube and the anode II respectively of the photo-electric cell It.'
  • the cathode of the latter is designated 3.
  • the condenser I9 Upon exposure of the photo-electric cell IS the condenser I9 is charged from the mains to the voltage at which the glow discharge tube ll breaks down.
  • a relay 20 is so chosen as to attract its armature and close the contacts 2
  • the auxiliary anode 22 is connected, across the resistance 23, to the postive terminal l5 of the mains, so that a constant current of 2.5 ,1. amp. constantly passes over the auxiliary anode.
  • Delay of ignition 'does The device may be used for measuring quantities of light.
  • a circuit arrangement comprisin a glow discharge tube having a layer of metal of visible thickness coating substantially the entire wall thereof and having electrodes including an anode and a cathode of metal, the said metal of said layer and of said cathode having a melting point in excess of 1400 0., an auxiliary electrode in said discharge tube in spaced relationship with said anode and said cathode, the said discharge tube having an operating characteristic between said cathode and said anode in the glow discharge region and between said auxiliary electrode and one of said electrodes in the Townsend discharge region, means to apply a potential between said auxiliary electrode and one of said electrodes, said potential having a magnitude producing an auxiliary current between said auxiliary electrode and said one electrode having a value eflecting the said Townsend discharge in the said tube, and means to apply a potential between said anode and said cathode to effect a glow discharge in said tube said latter potential having a value sufficient to initiate the said glow discharge between the said anode and said cathode in the absence of the said said
  • a circuit arrangement comprising a glow discharge tube having a layer of metal of visible thickness coating substantially the entire inner wall thereof and having electrodes including an anode and a cathode of metal, the said metal of said layer and of said cathode having a melting point in excess of 1400" 0., an auxiliary electrode in said discharge tube in spaced relationship with said anode and said cathode, the said discharge tube having an operating characteristic between said cathode and said anode in the glow discharge region and between said auxiliary electrode and one of said electrodes in the Townsend discharge region, a source of a potential, a voltage dropping resistor, means connecting said source through said resistor between said am:- iliary electrode and one of said electrodes, said resistor having a value at which the magnitude of the voltage between said auxiliary electrode and said other electrode effects a Townsend discharge in said tube, a charging condenser connected between said cathode and said anode of said discharge tube, and a switching means connecting said source across said condenser whereby in the

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  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Lasers (AREA)
US66634A 1948-01-14 1948-12-22 Device comprising a glow discharge tube Expired - Lifetime US2577352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL664418X 1948-01-14

Publications (1)

Publication Number Publication Date
US2577352A true US2577352A (en) 1951-12-04

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ID=19798701

Family Applications (1)

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US66634A Expired - Lifetime US2577352A (en) 1948-01-14 1948-12-22 Device comprising a glow discharge tube

Country Status (4)

Country Link
US (1) US2577352A (en, 2012)
BE (1) BE486762A (en, 2012)
FR (1) FR978893A (en, 2012)
GB (1) GB664418A (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745988A (en) * 1950-04-13 1956-05-15 Hartford Nat Bank & Trust Co Glow discharge tube and circuit therefor
US2889490A (en) * 1955-10-03 1959-06-02 Hoffman Electronics Corp Solar powered light source or the like

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB156664A (en) * 1919-09-01 1922-04-06 Fritz Schroeter Improved means for regulating the terminal voltage of electrical valve tubes
US1893638A (en) * 1929-11-07 1933-01-10 Schmierer Johannes Michael Gas discharge relay
US1898046A (en) * 1923-11-15 1933-02-21 Radio Patents Corp Electric relay device for indicating weak currents
US2275242A (en) * 1939-10-07 1942-03-03 Fides Gmbh Glow discharge tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB156664A (en) * 1919-09-01 1922-04-06 Fritz Schroeter Improved means for regulating the terminal voltage of electrical valve tubes
US1898046A (en) * 1923-11-15 1933-02-21 Radio Patents Corp Electric relay device for indicating weak currents
US1893638A (en) * 1929-11-07 1933-01-10 Schmierer Johannes Michael Gas discharge relay
US2275242A (en) * 1939-10-07 1942-03-03 Fides Gmbh Glow discharge tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745988A (en) * 1950-04-13 1956-05-15 Hartford Nat Bank & Trust Co Glow discharge tube and circuit therefor
US2889490A (en) * 1955-10-03 1959-06-02 Hoffman Electronics Corp Solar powered light source or the like

Also Published As

Publication number Publication date
GB664418A (en) 1952-01-09
BE486762A (en, 2012)
FR978893A (fr) 1951-04-19

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