EP0111296A1 - Dispositif pour contrôler l'intensité d'une lampe de décharge à basse pression - Google Patents

Dispositif pour contrôler l'intensité d'une lampe de décharge à basse pression Download PDF

Info

Publication number: EP0111296A1
Authority: EP; European Patent Office
Prior art keywords: arrangement according; discharge lamp; secondary winding; electrodes; heating
Prior art date: 1982-12-10
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.): Granted

Application number

EP83112266A

Other languages

German (de)

English (en)

Other versions

EP0111296B1 (fr

Inventor

Josef Ballmann

Manfred Klamt

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.)

Siemens AG

Siemens Corp

Original Assignee

Siemens AG

Siemens Corp

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.)

1982-12-10

Filing date

1983-12-06

Publication date

1984-06-20

1982-12-10 Priority claimed from DE19823245817 external-priority patent/DE3245817A1/de

1983-08-05 Priority claimed from DE19833328378 external-priority patent/DE3328378A1/de

1983-12-06 Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG

1983-12-06 Priority to AT83112266T priority Critical patent/ATE29361T1/de

1984-06-20 Publication of EP0111296A1 publication Critical patent/EP0111296A1/fr

1987-09-02 Application granted granted Critical

1987-09-02 Publication of EP0111296B1 publication Critical patent/EP0111296B1/fr

Status Expired legal-status Critical Current

Links

238000004804 winding Methods 0.000 claims abstract description 23
238000010438 heat treatment Methods 0.000 claims description 31
238000001514 detection method Methods 0.000 claims description 5
238000012806 monitoring device Methods 0.000 claims description 2
230000000903 blocking effect Effects 0.000 description 2
239000003990 capacitor Substances 0.000 description 2
238000009420 retrofitting Methods 0.000 description 2
230000001419 dependent effect Effects 0.000 description 1
229910052743 krypton Inorganic materials 0.000 description 1
DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
239000002184 metal Substances 0.000 description 1

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
- H05B41/14—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
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations

Definitions

the invention relates to an arrangement for controlling the brightness of a low-pressure discharge lamp according to the preamble of claim 1.
the voltage supplied by the control device is usually changed by phase gating.
additional ignition aids such as a high-voltage ignition strip or a metal net along the surface of the lamp, were used.
the brightness of these lamps should not be controllable in the manner described.
the invention is therefore based on the object of specifying an arrangement for controlling the brightness of such low-pressure discharge lamps with a diameter of 26 mm.
the inventive solution to this problem is characterized in claim 1. It is based on the fact that the auxiliary voltage with a frequency of greater than 5 kHz maintains a basic ionization, which enables stable operation of the lamp even with largely reduced brightness.
any relevant generator with sufficient power can be used as an auxiliary voltage source; the for Operating voltage required for it is supplied according to a further development of the invention by the heating transformer which is required in any case for operating the discharge lamp.
the heating transformer which is required in any case for operating the discharge lamp.
this can have a separate secondary winding;
it is particularly advantageous to tap the supply voltage for the auxiliary voltage source from a secondary winding which feeds the lamp electrodes.
the power supply of the auxiliary voltage source via the heating transformer enables the auxiliary voltage source to be combined with the heating transformer to form a pre-wired additional device which, apart from the mains connection terminals, only has the terminals for connecting the heatable electrodes of the lamp!
This additional device does not differ in external terms in terms of the terminals from the heating transformer previously used.
the width of the additional device is expediently the same or smaller and its type of fastening is unchanged, so that retrofitting of existing systems is simply possible by simply exchanging the heating transformer for the new additional device.
the auxiliary voltage source is preferably arranged on the end face, that is to say in the longitudinal direction of the heating transformer, since there is generally sufficient space in this dimension in the luminaire chassis.
the auxiliary voltage source is designed as a three-pole system, so that only three connections to the heating transformer are to be made. If the fluorescent lamp connected to such an arrangement is removed from the socket by a person such that only the heating circuit on the ground side is interrupted and this person then touches one of the exposed electrode connections, then the auxiliary current can flow through this person to earth and thereby the Ionize the lamp to such an extent that a dangerous main current can subsequently be discharged via the person to earth.
a monitoring device is provided according to a further development of the invention, by means of which the auxiliary voltage is switched off when the heating circuit on the earth side is interrupted.
an auxiliary contact can be arranged in this socket or in its vicinity in the lamp housing, the position of which changes when the lamp is removed from the socket and which thereby switches off the auxiliary voltage directly or indirectly.
the current in the earth-side heating circuit is preferably monitored and the auxiliary voltage source is switched off when this current is lost.
a conventional control device 3 is connected between the terminals L and N of an AC voltage network and supplies a low-pressure discharge lamp 1 with an adjustable voltage via a series reactor 2.
an additional device 6 with a heating transformer 4 is provided, the primary winding 41 of which is connected to the AC voltage network via the terminals 61, 62.
a first secondary winding 43 of this heating transformer is connected to the electrode 11 of the lamp 1 via the terminals 63, 64; a second secondary winding 42 feeds the second electrode 12 via the terminals 62, 65.
the additional device 6 contains, in addition to the heating transformer 4, an auxiliary voltage source 5, which is connected to the secondary winding 42 via terminals 500, 510 and to the terminal 63 of the additional device via terminal 520. It thus receives a supply voltage from the secondary winding 42 via the terminals 500, 510 and supplies an auxiliary voltage of approximately 400 volts at a frequency of 30 kHz between the terminals 500 and 520.
the maximum power of the auxiliary voltage source with a discharge lamp of 58 watts is 5 volt amperes.
the auxiliary voltage source essentially consists of three parts, a rectifier part, a multivibrator and an amplifier.
the multivibrator consists of an integrated circuit with a known structure and known external wiring; it is followed by a two-stage amplifier, also of a known design.
the final stage of the amplifier contains a transformer, the secondary winding of which lies between the terminals 510, 520 via a decoupling capacitor. This avoids a short circuit in the supply voltage supplied by control unit 3; conversely, the series choke 2 keeps the higher-frequency voltage away from the control unit 3.
the second secondary winding 42 of the heating transformer 4 is connected to the electrode 12 via a detection resistor 51.
This secondary winding 42 supplies a voltage which is greater than the voltage on the secondary winding 43 by the voltage drop across the detection resistor 51.
a third secondary winding 44 feeds the auxiliary voltage source via a rectifier 57, which supplies the DC supply voltage for an astable multivibrator 55, which is formed by an IC 50 with the usual wiring of its terminals.
a power MOS transistor 56 is periodically opened and closed by this multivibrator 55, the control path of which is connected to terminal 03 of IC 50 for this purpose.
a partial winding of an autotransformer 53 is connected to the rectifier 57 via its switching path; on the other hand, the entire winding of the autotransformer is connected via a decoupling capacitor 34 and the switching path of the transistor 56 is connected to the electrodes of the discharge lamp 1 via the terminals 62 and 63.
the IC 50 has a blocking input 04 in a known manner: If a positive voltage is applied to this, the multivibrator constructed with this IC oscillates.
This input 04 is now connected via a diode 54 and a transistor 52 to the secondary winding 42 on the ground side Heating circuit; the control path of this transistor 52 is parallel to the detection resistor 51: as long as the arrangement shown is switched on and current flows in the ground-side heating circuit, the transistor 52 is periodically conductive. This creates a DC voltage at input 04, to which an RC element lies in parallel, which is a prerequisite for the oscillating operation of the multivibrator.

Landscapes

Circuit Arrangements For Discharge Lamps (AREA)

EP83112266A 1982-12-10 1983-12-06 Dispositif pour contrôler l'intensité d'une lampe de décharge à basse pression Expired EP0111296B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT83112266T ATE29361T1 (de)	1982-12-10	1983-12-06	Anordnung zur steuerung der helligkeit einer niederdruckentladungslampe.

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE3245817		1982-12-10
DE19823245817 DE3245817A1 (de)	1982-12-10	1982-12-10	Anordnung zur steuerung der helligkeit einer niederdruckentladungslampe
DE3328378		1983-08-05
DE19833328378 DE3328378A1 (de)	1983-08-05	1983-08-05	Anordnung zur steuerung der helligkeit einer niederdruckentladungslampe

Publications (2)

Publication Number	Publication Date
EP0111296A1 true EP0111296A1 (fr)	1984-06-20
EP0111296B1 EP0111296B1 (fr)	1987-09-02

Family

ID=25806463

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP83112266A Expired EP0111296B1 (fr)	1982-12-10	1983-12-06	Dispositif pour contrôler l'intensité d'une lampe de décharge à basse pression

Country Status (3)

Country	Link
EP (1)	EP0111296B1 (fr)
DE (1)	DE3373399D1 (fr)
FI (1)	FI78212C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0353382A1 (fr) *	1988-08-02	1990-02-07	Heraeus Kulzer GmbH	Circuit d'alimentation d'une lampe à décharge basse pression
GB2232543A (en) *	1989-05-18	1990-12-12	Lutron Electronics Co	Fluorescent lamp dimming system
EP0471332A1 (fr) *	1990-08-16	1992-02-19	DIEHL GMBH & CO.	Assemblage de circuit pour le fonctionnement d'une lampe fluorescente
EP0471331A1 (fr) *	1990-08-16	1992-02-19	DIEHL GMBH & CO.	Assemblage de circuit pour le fonctionnement d'une lampe fluorescente
WO2000021342A1 (fr) *	1998-10-01	2000-04-13	Inotec Gesellschaft Für Verkaufsförderung, Innovation Und Technik Mbh	Configuration de circuit destinee au fonctionnement a faible consommation d'energie d'un tube fluorescent

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2508923A1 (de) *	1975-03-01	1976-09-09	Bbc Brown Boveri & Cie	Elektronische zusatzschaltungsanordnung
US4230971A (en) *	1978-09-07	1980-10-28	Datapower, Inc.	Variable intensity control apparatus for operating a gas discharge lamp
GB2062377A (en) *	1979-09-28	1981-05-20	Toshiba Electric Equip	Apparatus for operating a gaseous discharge lamp
EP0060458A2 (fr) *	1981-03-16	1982-09-22	Koch Elektronik + Apparatebau AG	Equipement pour régler la luminosité d'une lampe à fluorescence

1983
- 1983-12-02 FI FI834428A patent/FI78212C/fi not_active IP Right Cessation
- 1983-12-06 DE DE8383112266T patent/DE3373399D1/de not_active Expired
- 1983-12-06 EP EP83112266A patent/EP0111296B1/fr not_active Expired

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2508923A1 (de) *	1975-03-01	1976-09-09	Bbc Brown Boveri & Cie	Elektronische zusatzschaltungsanordnung
US4230971A (en) *	1978-09-07	1980-10-28	Datapower, Inc.	Variable intensity control apparatus for operating a gas discharge lamp
GB2062377A (en) *	1979-09-28	1981-05-20	Toshiba Electric Equip	Apparatus for operating a gaseous discharge lamp
EP0060458A2 (fr) *	1981-03-16	1982-09-22	Koch Elektronik + Apparatebau AG	Equipement pour régler la luminosité d'une lampe à fluorescence

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0353382A1 (fr) *	1988-08-02	1990-02-07	Heraeus Kulzer GmbH	Circuit d'alimentation d'une lampe à décharge basse pression
US5057745A (en) *	1988-08-02	1991-10-15	Heraeus Kulzer Gmbh	Low-pressure discharge lamp driving circuit
GB2232543A (en) *	1989-05-18	1990-12-12	Lutron Electronics Co	Fluorescent lamp dimming system
EP0471332A1 (fr) *	1990-08-16	1992-02-19	DIEHL GMBH & CO.	Assemblage de circuit pour le fonctionnement d'une lampe fluorescente
EP0471331A1 (fr) *	1990-08-16	1992-02-19	DIEHL GMBH & CO.	Assemblage de circuit pour le fonctionnement d'une lampe fluorescente
US5175471A (en) *	1990-08-16	1992-12-29	Diehl Gmbh & Co.	Circuit arrangement for the operation of a fluorescent lamp
WO2000021342A1 (fr) *	1998-10-01	2000-04-13	Inotec Gesellschaft Für Verkaufsförderung, Innovation Und Technik Mbh	Configuration de circuit destinee au fonctionnement a faible consommation d'energie d'un tube fluorescent
GB2358972A (en) *	1998-10-01	2001-08-08	Inotec Ges Fuer Verkaufsfoerde	Circuit arrangemnt for energy-saving operation of a fluorescent tube
US6518715B1 (en)	1998-10-01	2003-02-11	Future New Developments Limited	Circuit arrangement for the energy-saving operation of a fluorescent tube
AU760871B2 (en) *	1998-10-01	2003-05-22	B & S Patente Und Marken Gmbh	Circuit arrangement for energy-saving operation of a fluorescent tube

Also Published As

Publication number	Publication date
FI834428A0 (fi)	1983-12-02
FI78212C (fi)	1989-06-12
FI834428L (fi)	1984-06-11
DE3373399D1 (en)	1987-10-08
EP0111296B1 (fr)	1987-09-02
FI78212B (fi)	1989-02-28

Legal Events

Date	Code	Title	Description
1984-04-19	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
1984-06-20	AK	Designated contracting states	Designated state(s): AT CH DE FR GB LI NL SE
1984-08-01	17P	Request for examination filed	Effective date: 19840524
1986-03-26	17Q	First examination report despatched	Effective date: 19860207
1987-07-18	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1987-09-02	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT CH DE FR GB LI NL SE
1987-09-02	REF	Corresponds to:	Ref document number: 29361 Country of ref document: AT Date of ref document: 19870915 Kind code of ref document: T
1987-10-08	REF	Corresponds to:	Ref document number: 3373399 Country of ref document: DE Date of ref document: 19871008
1987-11-06	ET	Fr: translation filed
1987-12-31	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1988-07-11	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1988-07-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1988-08-31	26N	No opposition filed
1991-12-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19911217 Year of fee payment: 9
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1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 83112266.8 Effective date: 19930709
1995-08-02	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19941206
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