EP0335327A2 - Dispositif d'allumage d'une lampe à décharge dans un gaz - Google Patents

Dispositif d'allumage d'une lampe à décharge dans un gaz Download PDF

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Publication number
EP0335327A2
EP0335327A2 EP89105453A EP89105453A EP0335327A2 EP 0335327 A2 EP0335327 A2 EP 0335327A2 EP 89105453 A EP89105453 A EP 89105453A EP 89105453 A EP89105453 A EP 89105453A EP 0335327 A2 EP0335327 A2 EP 0335327A2
Authority
EP
European Patent Office
Prior art keywords
capacitor
series
gas discharge
thyristor
circuit
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.)
Withdrawn
Application number
EP89105453A
Other languages
German (de)
English (en)
Inventor
Anton Stojanov Dipl.-Ing. Atanassov
Vesselin Stanev Dipl.-Ing. Vassilev
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.)
Savod SA Energoikonomisvaschti Ustrojstva
Original Assignee
Savod SA Energoikonomisvaschti Ustrojstva
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 Savod SA Energoikonomisvaschti Ustrojstva filed Critical Savod SA Energoikonomisvaschti Ustrojstva
Publication of EP0335327A2 publication Critical patent/EP0335327A2/fr
Withdrawn legal-status Critical Current

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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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices

Definitions

  • the invention relates to a device for igniting gas discharge lamps and can be used to generate a high-voltage pulse for igniting all types of sodium, metal halogen and other gas discharge lamps in which the ignition voltage is higher than the voltage of the supply network.
  • a device for igniting gas discharge lamps is already known from CS-164 970, the resonant circuit of which has a pulse converter, the secondary winding of which is connected in series with a load inductor and a gas discharge lamp.
  • the primary winding of the pulse converter is connected to a capacitor and a thyristor.
  • the control circuit of the thyristor consists of a capacitor with a resistor connected in parallel, with which a resistor and a diode are connected in series.
  • the resonant circuit is connected to the connection point between the load choke and the secondary winding of the pulse converter via a series circuit comprising a second choke and a diode.
  • the disadvantage of the known device is that the choke has large dimensions, so that the device has a high expenditure of active power and a complicated circuit structure in which the control circuit of the thyristor is not inserted into the resonant circuit.
  • the use of an additional choke increases the overall dimensions of the device.
  • the invention has for its object to provide a device for igniting gas discharge lamps, which has the lowest possible active power, a simplified circuit structure and reduced dimensions.
  • a device for igniting gas discharge lamps the resonant circuit of which has a pulse converter, the secondary winding of which is connected in series with a load inductor and a gas discharge lamp.
  • the primary winding of the pulse converter is connected with one of its terminals to the anode of a thyristor.
  • the resonant circuit is protected from overvoltages by means of a resistor which is connected to the supply network with one of its terminals.
  • no resistors are used in the control circuit of the thyristor.
  • the control circuit consists of two capacitors connected in series and inserted in the resonant circuit.
  • the cathode of a diode and the anode of a dinistor are connected to the connection point of the capacitors, the cathode of the dinistor being connected to the control electrode of the thyristor.
  • a back diode is parallel to the thyristor switches; a capacitor is connected in series with the primary winding of the pulse converter.
  • the device according to the invention has a reduced outlay on active power, a simplified circuit structure and reduced dimensions.
  • the device for igniting gas discharge lamps consists of an oscillating circuit with a pulse converter 1, the secondary winding 2 of which is connected in series with a load inductor 3 and a gas discharge lamp 4.
  • the free terminals of the choke 3 and the gas discharge lamp 4 are connected to the first and second terminals R and N of a feed network.
  • the control circuit of a thyristor 5 consisting of two capacitors 6 and 7 connected in series.
  • the cathode of a diode 8 and the anode of a dinistor 9 are connected, the other terminal of which is connected to the control electrode of the The thyristor 5, to which a back diode 10 is connected in parallel, is connected to the second terminal N of the feed network via a series circuit comprising the primary winding 11 of the pulse converter 1, a capacitor 12 and a series resistor 13.
  • the connection point between the series resistor 13 and the capacitor 12 is connected to the series connection of the two capacitors 6 and 7.
  • the device works as follows: During the negative half period of the supply voltage compared to the neutral N, the capacitors 6 and 7 are charged via the series resistor 13. When the voltage at the connection point b between the capacitors 6 and 7 reaches the turn-on voltage of the dinistor 9, it is turned on and the thyristor 5 is turned on. An oscillation process occurs, which causes an energy exchange between the capacitors 6, 7 and 12 and the primary winding 11 of the pulse converter 1. As a result, an ignition pulse with high voltage is generated in the secondary winding 2 of the pulse converter 1. This pulse is superimposed on the half period of the supply voltage and ignites the gas discharge lamp 4.
  • the resistor 3 protects the resonant circuit from overvoltages that occur when the pulse is generated, in the event of damage to the lamp or in the event of a short circuit.
  • the capacitors 6 and 7 are at the instantaneous value of the supply voltage via the diodes 8 and 10, so that no high-voltage ignition pulse can be generated.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP89105453A 1988-03-30 1989-03-28 Dispositif d'allumage d'une lampe à décharge dans un gaz Withdrawn EP0335327A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG83526A BG47790A1 (en) 1988-03-30 1988-03-30 Device for ingiting of gas discharge lamps
BG83526/88 1988-03-30

Publications (1)

Publication Number Publication Date
EP0335327A2 true EP0335327A2 (fr) 1989-10-04

Family

ID=3920336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105453A Withdrawn EP0335327A2 (fr) 1988-03-30 1989-03-28 Dispositif d'allumage d'une lampe à décharge dans un gaz

Country Status (3)

Country Link
EP (1) EP0335327A2 (fr)
BG (1) BG47790A1 (fr)
FI (1) FI891005A7 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1385359A1 (fr) * 2002-07-22 2004-01-28 Dmitri Koroliouk Commande à distance d'une ballast électronique pour une lampe à décharge par onde porteuse sur le réseau d'alimentation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1385359A1 (fr) * 2002-07-22 2004-01-28 Dmitri Koroliouk Commande à distance d'une ballast électronique pour une lampe à décharge par onde porteuse sur le réseau d'alimentation

Also Published As

Publication number Publication date
FI891005A7 (fi) 1989-10-01
BG47790A1 (en) 1990-09-14
FI891005A0 (fi) 1989-03-02

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