EP0041027B1 - Speiseschaltung für Entladungslampen mit Spannungsvervielfacher - Google Patents

Speiseschaltung für Entladungslampen mit Spannungsvervielfacher Download PDF

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Publication number
EP0041027B1
EP0041027B1 EP19810400844 EP81400844A EP0041027B1 EP 0041027 B1 EP0041027 B1 EP 0041027B1 EP 19810400844 EP19810400844 EP 19810400844 EP 81400844 A EP81400844 A EP 81400844A EP 0041027 B1 EP0041027 B1 EP 0041027B1
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EP
European Patent Office
Prior art keywords
condensers
capacitance
stage
multiplier
current
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
EP19810400844
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English (en)
French (fr)
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EP0041027A1 (de
Inventor
François Kneider
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0041027A1 publication Critical patent/EP0041027A1/de
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    • 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

Definitions

  • the present invention relates to a direct current supply device for discharge tubes according to the preamble of claim 1.
  • It can be used to supply discharge tubes of the Argon or Neon type (called cold cathode) or fluorescent tube, laser, small model or for any other use.
  • cold cathode Argon or Neon type
  • fluorescent tube laser, small model or for any other use.
  • a known device described in the document CH-A-481 550 is composed of the combination of a multistage voltage multiplier which delivers the discharge current combined with a voltage doubler for the priming of the tube, connected in parallel to the multipliers. This additional circuit also increases the number of components of the device.
  • the invention aims to remedy the aforementioned drawbacks by creating a supply device having at least two output impedances, one entirely independent of the other with a large impedance gap.
  • Fig. 1 shows a three-stage example comprising six multiplicative voltage cells symmetrical with respect to the sector in order to reduce the maximum output voltage with respect to the sector, which can improve job security.
  • multiplier can be executed by a lesser or greater number of voltage multiplier cells.
  • This device comprises the diodes 1-2-3-4-5-6 and the capacitors 7-8 connected as indicated in claim 1, which are of great value for ensuring, determining and maintaining the discharge current in the tube .
  • Capacities 9-10 can be of high value close to the previous ones, if one wishes to make them support an important function in the discharge current, on the other hand they can be of very low value if one wishes to make them execute the function unique boot; capacities 11-12 which are of very low value are only used for priming the tube.
  • Resistor 13 is of low value, and serves to limit the intensity during commissioning, the peak current; it can be replaced or seconded by a selfic impedance or resistance to coefficiant of negative temperature or any other means limiting the peak intensity.
  • the resistor 14 has the function of limiting the peak current in the discharge tube, it is presented by way of example, an ohmic resistor and can be replaced or seconded by an active component, such as a transistor (see fig. 2) .
  • the active current limiter is shown in fig.2. It includes an output resistor 15, a Zener diode 16, and a resistor 17 at the input and the transistor 18, which serves to limit the discharge current.
  • the retraction circuit 19-20 and the basic resistor 21 are common components in regulators or current limiters.
  • the output voltage in the absence of load is six times the peak input voltage. It is directly related to the number of cells used.
  • the discharge tubes tend to decrease their internal resistances, when the discharge current increases, this reality can cause unpleasant effects which consist in flashing the lighting at an indefinite frequency, if the choice of the resistance 14 is too low . In general it is of the order of a few hundred Ohmes to a few Kilo-Ohmes. This is improved by the active circuit according to fig. 2.

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Lasers (AREA)

Claims (4)

1. Gleichstrom-Versorgungsvorrichtung für Entladungsröhren, bestehend aus mindestens zwei Spannungsvervielfachungs-Stufen, die erste bestehend aus zwei Zweigen für die respektiven Halbwellen, wobei jeder von einer ersten Diode (1, 2) und einem ersten Kondensator (7, 8) gebildet wird und zwischen die Eingangsklemmen (B1, B2) der Vorrichtung im Median-Stromkreis geschaltet ist, während sie als Ausgangsklemmen (B5, B6), an denen die verdoppelte Spannung deduziert werden kann, den gemeinsamen Anschluss der ersten Dioden (1, 2) und der ersten Kondensatoren (7, 8) haben; die zweite Stufe besteht aus den zweiten Zweigen, die jeweils von einer zweiten Diode (3, 4) und einem zweiten Kondensator (10, 9) gebildet werden, welche zwischen die Eingangsklemme (B1) an der ersten Diode (1, 2) und die Ausgangsklemme (B5, B6) des ersten Vervielfachers seriengeschaltet sind, wobei sie als Ausgangsklemmen (B'3,B'4), an denen die vervielfachte Spannung deduziert werden kann, den gemeinsamen Anschluss der zweiten Dioden (3, 4) und der zweiten Kondensatoren (10, 9) haben, gekennzeichnet davon, dass die Kapazität der ersten Kondensatoren der Eingangsstufe (7, 8) bedeutend stärker ist als die Kapazität der Kondensatoren der Ausgangsstufe (9, 10 oder 11, 12), die ersten Kondensatoren (7, 8) also den Entladungsstrom der Röhre unter Spannung halten, während die Kondensatoren der Ausgangsstufe, mit der schwachen Kapazität (9, 10 oder 11, 12) lediglich den Vorionisierungsstrom liefern.
2. Versorgungsvorrichtung wie unter Anspruch 1), bestehend aus drei Vervielfachungs-Stufen, davon gekennzeichnet, dass die Kondensatoren der zweiten Stufe (9, 10) eine starke Kapazität aufweisen, ähnlich der der ersten Kondensatoren (7, 8), während die Kapazität der dritten Kondensatoren (11, 12) niedrig ist.
3. Versorgungsvorrichtung wie unter Anspruch 1, bestehend aus drei Vervielfachungs-Stufen, davon gekennzeichnet, dass die Kondensatoren der zweiten Stufe (9, 10) eine niedrige Kapazität haben, ähnlich der der dritten Kondensatoren (11,12).
4. Versorgungsvorrichtung wie unter einem der Ansprüche 1 bis 3, mit einem Strombegrenzungs-Widerstand zwischen einer Ausgangsklemme (B4) der letzten Vervielfachungsstufe und der Entladungsröhre, gekennzeichnet davon, dass dieser Widerstand von einem aktiven Strombegrenzungskreis gebildet wird, der hauptsächlich aus einem seriengeschalteten Transistor (18) besteht, mit einer zu seinem Eintritt parallelen Z-Diode (16).
EP19810400844 1980-05-27 1981-05-26 Speiseschaltung für Entladungslampen mit Spannungsvervielfacher Expired EP0041027B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8011653A FR2483728A1 (fr) 1980-05-27 1980-05-27 Alimentation des tubes a decharge par un multiplicateur de tension
FR8011653 1980-05-27

Publications (2)

Publication Number Publication Date
EP0041027A1 EP0041027A1 (de) 1981-12-02
EP0041027B1 true EP0041027B1 (de) 1984-11-14

Family

ID=9242340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810400844 Expired EP0041027B1 (de) 1980-05-27 1981-05-26 Speiseschaltung für Entladungslampen mit Spannungsvervielfacher

Country Status (3)

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EP (1) EP0041027B1 (de)
DE (1) DE3167162D1 (de)
FR (1) FR2483728A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560730B1 (fr) * 1984-03-02 1986-09-19 Gloria Sa Dispositif de demarrage et d'alimentation d'un tube a decharge dans un gaz
TW299558B (de) * 1992-04-03 1997-03-01 Hubbell Inc
IT1282832B1 (it) * 1995-03-24 1998-03-31 Lucio Falace Dispositivo elevatore di tensione, specialmente indicato per l'accensione dei tubi a gas inerte, o qualsivoglia utilizzatore, con

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH481550A (de) * 1967-12-21 1969-11-15 Frako Kondensatoren Und App Ba Schaltungsanordnung mit einer Gasentladungslampe
US3527982A (en) * 1968-07-31 1970-09-08 Gen Electric Discharge lamp ballasting

Also Published As

Publication number Publication date
DE3167162D1 (en) 1984-12-20
FR2483728B1 (de) 1983-01-21
EP0041027A1 (de) 1981-12-02
FR2483728A1 (fr) 1981-12-04

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