DE680299C - Electric low-pressure mercury tubes with noble gas filling and glow electrodes - Google Patents

Electric low-pressure mercury tubes with noble gas filling and glow electrodes

Info

Publication number
DE680299C
DE680299C DEP77084D DEP0077084D DE680299C DE 680299 C DE680299 C DE 680299C DE P77084 D DEP77084 D DE P77084D DE P0077084 D DEP0077084 D DE P0077084D DE 680299 C DE680299 C DE 680299C
Authority
DE
Germany
Prior art keywords
glow
pressure mercury
noble gas
electrodes
gas filling
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
Application number
DEP77084D
Other languages
German (de)
Inventor
Dr Hans Alterthum
Dr Arved Lompe
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to DEP77084D priority Critical patent/DE680299C/en
Application granted granted Critical
Publication of DE680299C publication Critical patent/DE680299C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
    • H05B41/2325—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes

Description

Elektrische Quecksilberniederdruckröhre mit Edelgasgrundfüllung und Glühelektroden Zusatz zum Patent 677 914 Im Hauptpatent ist eine elektrische Quecksilberniederdruckröhre mit Edelgasgrundfüllung und im Betriebe glühenden Oxydelektroden beschrieben, .die bei einem mindestens 3o mm betragenden Rohrinnendurchmesser und Verwendung einer Stromstärke zwischen ioo bis 2oomA eine Neongasgrundfüllung von höchstens 2 Torr Druck besitzt. Eine derartige Röhre weist :eine .steigende Stromspannungskennlinie auf !und: kann daher, nachdem die Erstzündung irgendwie herbeigeführt ist, etwa mittels eines ,Hochspannungsstoßes oder eines Hochfrequenzfeldes, wie eine gewöhnliche elektrische Glühlampe ohne Vorschaltwiderstand betrieben werden. Versuche haben gezeigt, daß die zur Erstzündung einer Röhre nach dem Hauptpatent erforderlichen zusätzlichen Hilfszündmittel in Wegfall kommen können, wenn die Oxydelektrod-en als fremdgeheizte Glühelektroden ausgebildet werden und wenn erfindungsgemäß mindestens eine von ihnen so bemessen wird, daß .der Spannungsabfall längs der vom Heizstrom durchflossenen Glühelektrode eine Querentladung, zweckmäßig Beine Niedervoltbogenentladung, zwischen Teilen dieser Glühelektrode erzeugt.Electric low pressure mercury tube with inert gas base filling and Glow electrodes Addition to patent 677 914 The main patent is an electric low-pressure mercury tube with noble gas basic filling and oxide electrodes glowing in the company, .the with an inside pipe diameter of at least 3o mm and the use of a Amperage between 100 and 2oomA a basic neon gas filling of at most 2 Torr Pressure owns. Such a tube has: a rising current-voltage characteristic on! and: can therefore, after the initial ignition has somehow been brought about, for example by means of a high voltage surge or a high frequency field, such as an ordinary one electric incandescent lamp can be operated without a series resistor. Have attempts shown that the necessary for the first ignition of a tube according to the main patent additional auxiliary ignition means can be omitted if the oxide electrodes be designed as externally heated glow electrodes and if according to the invention at least one of them is dimensioned so that .the voltage drop along that of the heating current flowing through glow electrode a transverse discharge, appropriately legs low-voltage arc discharge, generated between parts of this glow electrode.

Durch eine solche Querentladung an der Glühelektrode selbst wird in :an sich bekannter Weise eine kräftige Vorionisierung der Röhrenfüllung und damit eine wesentliche Herabsetzung der zur Zündung der Hauptentladung zwischen den beiden Glühelektroden erforderlichen Spannung erzielt. Die durch die Querentladung bewirkte Vorionisierung und Zündspannungsherabsetzung ist bei Röhren nach der Erfindung #deswegeri.' besonders weitgehend, weil infolge des meYi#'-als 3o mm betragenden Rohrinnendurchmes a` sers keine Behinderung der Ausbreitung der Ionisierung in der Hauptentladüngsbahn durch Wandwirkungen eintritt.Such a cross discharge on the glow electrode itself is in : a well-known way a strong pre-ionization of the tube filling and thus a substantial reduction in the ignition of the main discharge between achieved the voltage required for the two glow electrodes. The one through the cross discharge The pre-ionization and ignition voltage reduction brought about is in the case of tubes according to the invention #deswegeri. ' especially largely because as a result of the meYi # '- being 30 mm Inner pipe diameter does not impede the propagation of ionization in the Main discharge path occurs through wall effects.

Durch ausreichende Bemessung der Glühelektrodenquerentladung läßt 'sich ohne Schwierigkeit erreichen; daß der Wert der Zündspannung der Röhre ,gleich der mit der Anschlußspannung übereinstimmenden B:etriebsbrennspannung ist oder sogar unterhalb derselben liegt, so daß die Röhre ohne Vorschaltwiderstand nicht nur gebrannt, sondern ;auch gezündet werden kann.By adequately dimensioning the glow electrode cross discharge 'reach each other without difficulty; that the value of the ignition voltage of the tube, equal the operating voltage that corresponds to the connection voltage or even below it, so that the tube without a series resistor is not only burned, but; can also be ignited.

Mit Vorteil wird die Querentladung als Niedervoltbogenentladung Jerzeugt, worunter in üblicher Weise eine unselbständige, von einem fremdgeheizten, Elektronen aussendenden Glühkörper .ausgehende Entladung verstanden wird, deren Spannungsabfall kleiner als die Ionisierungs- öder sogar Anregungsspannung des betreffenden Gases oder I?ampfes ist.The transverse discharge is advantageously generated as a low-voltage arc discharge, Including, in the usual way, a dependent electron, heated by an external source emitting incandescent body. outgoing discharge is understood, the voltage drop smaller than the ionization or even excitation voltage of the gas in question or I? ampfes is.

= Zur weiteren Zünderleichterung kann die Röhre gegebenenfalls auch noch mit Hilfselektroden oder leitenden Wandbelägen versehen sein.= To further facilitate ignition, the tube can also be used if necessary still be provided with auxiliary electrodes or conductive wall coverings.

Claims (1)

PATRNTANSPRUCFI: Elektrische Quecksilberniederdruckröhre mit Edelgasgrundfüllung und im Betrieb glühenden fremdgeheizten Oxydelektroden nach Patent 677 9 i q., dadurch gekennzeichnet, daß mindestens eine der fremdgeheizten Glühelektroden so bemessen ist, daß der Spannungsabfall längs der vom Heizstrom durchflossenen Glühelektrode zu einer Querentladung, zweckmäßig zu einer Niedervoltbogenentladung, zwischen Teilen dieser Glühelektrode führt.PATRNTANSPRUCFI: Electric low-pressure mercury tube with a noble gas base filling and externally heated oxide electrodes glowing during operation according to patent 677 9 i q., thereby characterized in that at least one of the externally heated glow electrodes is dimensioned is that the voltage drop along the glow electrode through which the heating current flows to a transverse discharge, expediently to a low-voltage arc discharge, between parts this glow electrode leads.
DEP77084D 1938-04-03 1938-04-03 Electric low-pressure mercury tubes with noble gas filling and glow electrodes Expired DE680299C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP77084D DE680299C (en) 1938-04-03 1938-04-03 Electric low-pressure mercury tubes with noble gas filling and glow electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP77084D DE680299C (en) 1938-04-03 1938-04-03 Electric low-pressure mercury tubes with noble gas filling and glow electrodes

Publications (1)

Publication Number Publication Date
DE680299C true DE680299C (en) 1939-08-25

Family

ID=7393109

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP77084D Expired DE680299C (en) 1938-04-03 1938-04-03 Electric low-pressure mercury tubes with noble gas filling and glow electrodes

Country Status (1)

Country Link
DE (1) DE680299C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977321C (en) * 1950-04-13 1965-12-16 Gen Electric Low-pressure gas discharge lamp and circuit arrangement for their ignition and operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977321C (en) * 1950-04-13 1965-12-16 Gen Electric Low-pressure gas discharge lamp and circuit arrangement for their ignition and operation

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