DE379528C - Process for operating electric light tubes - Google Patents

Process for operating electric light tubes

Info

Publication number
DE379528C
DE379528C DES54032D DES0054032D DE379528C DE 379528 C DE379528 C DE 379528C DE S54032 D DES54032 D DE S54032D DE S0054032 D DES0054032 D DE S0054032D DE 379528 C DE379528 C DE 379528C
Authority
DE
Germany
Prior art keywords
current
tube
fluorescent tube
operating electric
fluorescent
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
DES54032D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DES54032D priority Critical patent/DE379528C/en
Application granted granted Critical
Publication of DE379528C publication Critical patent/DE379528C/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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Description

Gegenstand der Erfindung ist ein Verfahren zum Betriebe von Leuchtröhren mit Wechselstrom einer besonderen gewünschten Frequenz oder Kurvenform, wenn nur Gleichstrom oder gewöhnlicher Wechselstrom einer üblichen Periodenzahl zur Verfügung steht. Erfindungsgemäß wird zwecks entsprechender Umwandlung des zur Verfügung stehenden Stromes der Leuchtröhre eine Entladungsröhre vorgeschaltet, weiche der zum Betriebe der Leuchtröhre dienende Strom passieren muß. Der Stromdurchgang durch diese Entladungsröhre, im folgenden Kathodenröhre genannt, wird mittels elektrischer, magnetischer, optischer oder mechanischer Einwirkung entsprechend der Frequenz und Kurvenform des gewünschten Wechselstromes beeinflußt. Sehr geeignet als Kathodenröhre ist eine an sich bekannte hochevakuierte Röhre mit Glühkathode, bei welcher die Steuerung des durchgehenden Stromes in bekannter Weise durch eine Hilfselektrode (Gitter) erfolgt.The invention relates to a method for operating fluorescent tubes with alternating current a particular desired frequency or waveform if only DC or Ordinary alternating current of a usual number of periods is available. According to the invention a discharge tube is connected upstream of the fluorescent tube for the purpose of corresponding conversion of the available current, which the current used to operate the fluorescent tube must pass. The passage of current through this discharge tube, hereinafter referred to as cathode tube, is made by means of electrical, magnetic, optical or mechanical action according to the frequency and waveform of the desired AC current affected. A well-known one is very suitable as a cathode tube highly evacuated tube with hot cathode, in which the control of the continuous Current takes place in a known manner through an auxiliary electrode (grid).

Die Abb. ι zeigt schematisch eine Anordnung dieser Art zur Erzeugung eines hochfrequenten Wechselstromes oder eines solchen von besonderer Kurvenform. P1 und P2 sind die beiden Pole des Induktors oder Transformators oder einer anderen Stromquelle, die den Strom für die Leuchtröhre R liefert. E ist die Kathodenröhre, welche nach der Erfindung die Frequenz oder Kurvenform des die Leuchtröhre passierenden Stromes ändern soll. Sie besitzt in an sich bekannter Weise eine Anode A, eine Glühkathode K und eine Steuerelektrode S. Die Beeinflussung des Stromes erfolgt durch eine zwischen S und K angelegte Wechselspannung, welche in dem vorliegenden Beispiel auf induktivem Wege einer Apparatur zur Erzeugung elektrischer Schwingungen unter Benutzung einer Senderöhre SR entnommen wird. Durch Variieren der Kapazität C läßt sich die Frequenz des die Senderöhre durchfließenden Stromes ändern.Fig. Ι shows schematically an arrangement of this type for generating a high-frequency alternating current or one with a special curve shape. P 1 and P 2 are the two poles of the inductor or transformer or another power source that supplies the current for the fluorescent tube R. E is the cathode tube which, according to the invention, is intended to change the frequency or waveform of the current passing through the fluorescent tube. In a known way it has an anode A, a hot cathode K and a control electrode S. If the influence of the current through a voltage applied between S and K AC voltage, which on the one in the present example by inductive means of an apparatus for generating electrical oscillations using Transmission tube SR is removed. By varying the capacitance C , the frequency of the current flowing through the transmitter tube can be changed.

Bei Leuchtröhren wird die Lichtausbeute durch Frequenz und Kurvenform häufig sehr wesentlich verbessert. Insbesondere gestattet eine Stromkurve von der in Abb. 2 gezeichneten Form bei einer mittleren Stromstärke bzw. Stromdichte, welche innerhalb der durch die zulässige Erwärmung der Leuchtröhre und der Elektroden und den zulässigen Energiebedarf der Röhre gegebenen Grenzen liegt, ; Momentanstromdichten zu erreichen, welche weit über dieser mittleren Stromdichte liegen und somit besondere Leuchtwirkungen hervor- : zubringen erlauben. Eine Stromkurve dieser : Art läßt sich im Anodenstrom der Kathoden- ; röhre E durch entsprechende Schaltung sehr leicht erreichen, worauf nicht näher eingegangen wird, da dies aus der Theorie der Verstärkerröhre für Schwingungserzeugung genügend bekannt ist. Man kann die in Abb. 1 gezeichnete Senderöhre Si? auch weglassen und die Röhre E selbst mit einer Rückkopplungsschaltung verwenden.In the case of fluorescent tubes, the light output is often improved very significantly through the frequency and curve shape. In particular, a current curve of the shape shown in Fig. 2 at an average current strength or current density, which lies within the limits given by the permissible heating of the arc tube and the electrodes and the permissible energy requirement of the tube, allows; To achieve instantaneous current densities which are far above this average current density and thus allow special lighting effects to be produced. A current curve of this type can be found in the anode current of the cathode; Tube E can be reached very easily by appropriate circuitry, which will not be discussed in more detail, as this is well known from the theory of the amplifier tube for generating vibrations. One can see the Si? also omit and use the tube E itself with a feedback circuit.

Claims (1)

Patent-Anspruch :Patent claim: Verfahren zum Betriebe elektrischer Leuchtröhren, dadurch gekennzeichnet, daß der von der vorhandenen Stromquelle (z. B. Dynamo, Transformator oder Induktor) der Leuchtröhre zugeführte Strom durch entsprechende Erregung einer mit der Leuchtröhre in Serie geschalteten Kathodenröhre (vorzugsweise des Gitterkreises der letzteren) so umgewandelt wird, daß der die Leuchtröhre durchfließende Strom zwischen hohen schmalen Höchstwerten der Stromstärke und tiefen beiten Kleinstwerten derselben abwechselt, so daß also die Lichterregung bei verhältnismäßig kleiner mittlerer Stromdichte durch augenblickliche Wirkung ungewöhnlich hoher Stromdichten erfolgt.Method for operating electric fluorescent tubes, characterized in that from the existing power source (e.g. dynamo, transformer or inductor) The current supplied to the fluorescent tube by appropriate excitation of a cathode tube connected in series with the fluorescent tube (preferably the grid circle of the latter) is converted so that the current flowing through the fluorescent tube between high narrow maximum values of the current strength and low two minimum values the same alternates, so that the light excitation with a relatively small average current density by instantaneous There is an effect of unusually high current densities. Hierzu 1 ßlatt Zeichnungen.For this purpose 1 sheet of drawings.
DES54032D Process for operating electric light tubes Expired DE379528C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES54032D DE379528C (en) Process for operating electric light tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES54032D DE379528C (en) Process for operating electric light tubes

Publications (1)

Publication Number Publication Date
DE379528C true DE379528C (en) 1923-08-24

Family

ID=7489569

Family Applications (1)

Application Number Title Priority Date Filing Date
DES54032D Expired DE379528C (en) Process for operating electric light tubes

Country Status (1)

Country Link
DE (1) DE379528C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933701C (en) * 1941-02-12 1955-09-29 Zeiss Ikon Ag Method for operating an arc lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933701C (en) * 1941-02-12 1955-09-29 Zeiss Ikon Ag Method for operating an arc lamp

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