EP0335327A2 - Vorrichtung zum Zünden von Gasentladungslampen - Google Patents
Vorrichtung zum Zünden von Gasentladungslampen Download PDFInfo
- 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
- gas discharge
- series
- 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- Withdrawn
Links
Images
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG8352688A 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 (de) | 1989-10-04 |
Family
ID=3920336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89105453A Withdrawn EP0335327A2 (de) | 1988-03-30 | 1989-03-28 | Vorrichtung zum Zünden von Gasentladungslampen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0335327A2 (fi) |
BG (1) | BG47790A1 (fi) |
FI (1) | FI891005A (fi) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1385359A1 (en) * | 2002-07-22 | 2004-01-28 | Dmitri Koroliouk | Remote controlled electronic ballast for high pressure gas discharge lamps via power line carrier |
-
1988
- 1988-03-30 BG BG8352688A patent/BG47790A1/xx unknown
-
1989
- 1989-03-02 FI FI891005A patent/FI891005A/fi not_active IP Right Cessation
- 1989-03-28 EP EP89105453A patent/EP0335327A2/de not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1385359A1 (en) * | 2002-07-22 | 2004-01-28 | Dmitri Koroliouk | Remote controlled electronic ballast for high pressure gas discharge lamps via power line carrier |
Also Published As
Publication number | Publication date |
---|---|
BG47790A1 (en) | 1990-09-14 |
FI891005A (fi) | 1989-10-01 |
FI891005A0 (fi) | 1989-03-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR IT NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19910322 |