EP0150237A1 - Circuit pour faire fonctionner une lampe à décharge à haute pression avec une batterie - Google Patents

Circuit pour faire fonctionner une lampe à décharge à haute pression avec une batterie Download PDF

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Publication number
EP0150237A1
EP0150237A1 EP84100847A EP84100847A EP0150237A1 EP 0150237 A1 EP0150237 A1 EP 0150237A1 EP 84100847 A EP84100847 A EP 84100847A EP 84100847 A EP84100847 A EP 84100847A EP 0150237 A1 EP0150237 A1 EP 0150237A1
Authority
EP
European Patent Office
Prior art keywords
voltage
discharge lamp
lamp
switch
operating
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Withdrawn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
EP84100847A
Other languages
German (de)
English (en)
Inventor
Manfred Ing. Grad. Bauer
Rainer Kühn
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.)
Marai Mechanik und Elektronik GmbH
Original Assignee
Marai Mechanik und Elektronik GmbH
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 Marai Mechanik und Elektronik GmbH filed Critical Marai Mechanik und Elektronik GmbH
Priority to EP84100847A priority Critical patent/EP0150237A1/fr
Publication of EP0150237A1 publication Critical patent/EP0150237A1/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Withdrawn legal-status Critical Current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
    • H05B41/048—Starting switches using electromagnetic relays

Definitions

  • the invention relates to a circuit arrangement for operating a high-pressure discharge lamp on a battery, with a transistor voltage converter and a downstream transformer, the AC output voltage of which is fed to the high-pressure discharge lamp, an igniter being connected in parallel with the discharge lamp and which after the ignition of the Lamp becomes ineffective due to the voltage drop at an upstream inductor.
  • High-pressure discharge lamps require an AC voltage to operate.
  • the lamps, including the associated circuit, which usually contains an inductive ballast in the form of a choke for current limitation are designed in such a way that the lamps are connected to a voltage of 220 volts with a frequency of 50 Hz in accordance with the standard generally used in Europe can be.
  • a compensation capacitor is usually connected in parallel with the network, the capacitance of which is between 15 uF to 50 gF depending on the inductance and the power.
  • High pressure discharge lamps e.g. B. high pressure sodium lamps or metal halide lamps still need an igniter to operate, which generates the required ignition voltage of 2 to 4.5 kV in the starting phase.
  • This ignitor is located behind the choke parallel to the lamp.
  • the igniter Since the high voltage is no longer required after the lamp has been ignited, the igniter is designed such that it switches off automatically after the lamp has been ignited. This automatic switch-off is caused by the fact that current flows through the lamp after ignition and a voltage drop to about 190 V occurs behind the ballast. This voltage is no longer sufficient to keep the ignitor in operation.
  • High-pressure discharge lamps have a high luminous efficacy, which is between 70 and 120 lm / W depending on the output, and it would therefore be desirable to be able to operate these lamps on batteries.
  • high light outputs are usually required, for example in traffic accidents, fire brigade operations, etc., where previously only iodine halogen lamps were used, which in contrast to high-pressure discharge lamps only have a luminous efficacy of approx. 22 lm / W.
  • a 250 W metal halide lamp has the same light output of 22,000 lm as a 1000 W halogen lamp.
  • the lamp did not ignite at all, since the compensation capacitor without Current flow through the ballast acts as a capacitive load.
  • the generator was so heavily loaded by the capacitive load that the voltage collapsed below the value required for the igniter.
  • the present invention has for its object to provide a circuit arrangement of the type mentioned, which is distinguished from the proposed circuit by a reduction in technical effort and thus weight and price and an even better efficiency.
  • the secondary winding of the transformer is designed for the generation of the operating voltage for the ignitor and at the same time represents the upstream inductance that the secondary winding is a tap for tapping the lower operating voltage for the igniter compared to the operating voltage for the Discharge lamp contains, and that means for actuating a switch are provided which switch the supply voltage from the operating voltage for the igniter to the operating voltage after the discharge lamp has been ignited.
  • a high-pressure discharge lamp also works directly on a transformer winding if it is adapted to the lamp function at the required times and supplies the full operating voltage of approximately 220 V for the igniter when ignited, but after the ignition has started the lamp operating voltage of about 100 V is switched.
  • the secondary winding of the transformer takes over the function of the usual series choke, so that this can be omitted, and also the otherwise usual compensation capacitor can be omitted because the lack of the series choke eliminates the need for reactive current compensation. As a result, the circuit arrangement is considerably relieved in terms of effort and weight.
  • the means for actuating the switch preferably consist of a sensor circuit which actuates the switch in dependence on the operating current flowing through the lamp after ignition.
  • the sensor circuit contains a light source which is connected to the potential in front of the ignitor and is dimensioned such that it goes out when the ignition of the lamp on the secondary winding of the transformer causes a voltage drop, and the light source acts on a photoresistor which switches the switch controls a transistor circuit.
  • the changeover switch In its rest position, the changeover switch establishes a connection between the discharge lamp and the transformer winding for the operating voltage, and the switch is assigned a contact by which the photoresistor is briefly short-circuited, so that when the switch is switched on, the discharge lamp applies the operating voltage winding.
  • the glowing glow lamp controls the changeover switch via the photoresistor until the glow lamp goes out when the discharge lamp is ignited.
  • the relay actuating the changeover switch drops off for approx. 10 seconds, so that the lamp is connected to the operating voltage winding.
  • an alternating voltage Un is present at terminals 1 and 2, from which a high-pressure discharge lamp 4 is fed via a series reactor 3.
  • a capacitor C k is provided in parallel with the voltage wave C N to compensate for the reactive current caused by the choke 3.
  • An igniter 5 is connected behind the throttle 3 in parallel to the lamp 4, which is a high-pressure sodium vapor lamp or a metal halide lamp.
  • the voltage source U N from FIG. 1 is replaced by a static transistor voltage converter 6 with a transformer 7 connected downstream.
  • the transistor voltage converter sets the battery voltage from z. B. 12 V in an AC voltage, which is implemented via the transformer 7 to an output voltage Uz of 220 V and 50 Hz on the secondary winding.
  • This voltage U z represents the operating voltage for the igniter 5 connected in parallel with the discharge lamp 4, a switch 10 being arranged between the secondary winding of the transformer 7 and the igniter 5 and being operable by a relay 11.
  • the secondary winding of the output transformer 7 has a tap 12 on the a voltage U L can be tapped which corresponds to the operating voltage of the discharge lamp 4.
  • a glow lamp 13 in parallel, which has an ignition voltage of more than 180 V.
  • the switch 10 In the idle state, the switch 10 is connected to the tap 12 of the secondary winding of the transformer 7. So that the glow lamp can light up, the photoresistor 9 is briefly short-circuited by a parallel contact when the switch 8 is switched on, so that the relay 11 picks up and the igniter with the Operating voltage is applied, which at the same time brings the glow lamp 13 to light up. After the lamp 4 has ignited, the voltage at the secondary winding of the output transformer 7 collapses due to the current subsequently drawn, and the glow lamp 13 goes out, so that the switch 10 is actuated via the photoresistor 9 and the transistor circuit 14 connected to it and the discharge lamp 4 is connected to the burning voltage U L.
  • a further contact 15 can be assigned to the relay, which interrupts any power supply to the ignition device 5 when the switch 10 is switched to the operating voltage.
  • a delay circuit can also be provided, which takes effect after the lamp is switched on and actuates the changeover switch 10 within a predetermined time after the lamp has been switched on.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
EP84100847A 1984-01-27 1984-01-27 Circuit pour faire fonctionner une lampe à décharge à haute pression avec une batterie Withdrawn EP0150237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP84100847A EP0150237A1 (fr) 1984-01-27 1984-01-27 Circuit pour faire fonctionner une lampe à décharge à haute pression avec une batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84100847A EP0150237A1 (fr) 1984-01-27 1984-01-27 Circuit pour faire fonctionner une lampe à décharge à haute pression avec une batterie

Publications (1)

Publication Number Publication Date
EP0150237A1 true EP0150237A1 (fr) 1985-08-07

Family

ID=8191724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100847A Withdrawn EP0150237A1 (fr) 1984-01-27 1984-01-27 Circuit pour faire fonctionner une lampe à décharge à haute pression avec une batterie

Country Status (1)

Country Link
EP (1) EP0150237A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003353A1 (fr) * 1986-10-27 1988-05-05 Econolight Limited Systeme de commande d'un eclairage electrique
DE29507522U1 (de) * 1995-05-05 1995-11-16 Fa. Ed. Liesegang, 40221 Düsseldorf Stromversorgung für einen Projektor mit Metalldampflampe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286193A (en) * 1979-02-12 1981-08-25 Johnson Electric Coil Company Starting and operating circuit for gas discharge lamp
DE3202458A1 (de) * 1982-01-22 1983-08-04 Marai Mechanik und Elektronik GmbH, 3015 Wennigsen Schaltungsanordnung zum betrieb einer hochdruck-entladungslampe an einer batterie
DE3229425A1 (de) * 1982-08-04 1984-02-09 Marai Mechanik und Elektronik GmbH, 3015 Wennigsen Schaltungsanordnung zum betrieb einer hochdruck-entladungslampe an einer batterie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286193A (en) * 1979-02-12 1981-08-25 Johnson Electric Coil Company Starting and operating circuit for gas discharge lamp
DE3202458A1 (de) * 1982-01-22 1983-08-04 Marai Mechanik und Elektronik GmbH, 3015 Wennigsen Schaltungsanordnung zum betrieb einer hochdruck-entladungslampe an einer batterie
DE3229425A1 (de) * 1982-08-04 1984-02-09 Marai Mechanik und Elektronik GmbH, 3015 Wennigsen Schaltungsanordnung zum betrieb einer hochdruck-entladungslampe an einer batterie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003353A1 (fr) * 1986-10-27 1988-05-05 Econolight Limited Systeme de commande d'un eclairage electrique
AU595077B2 (en) * 1986-10-27 1990-03-22 Econolight Limited Discharge lamp control circuit
US4956583A (en) * 1986-10-27 1990-09-11 Econolight Limited Control system for electrical lighting
DE29507522U1 (de) * 1995-05-05 1995-11-16 Fa. Ed. Liesegang, 40221 Düsseldorf Stromversorgung für einen Projektor mit Metalldampflampe

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19851224

17Q First examination report despatched

Effective date: 19870630

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18W Application withdrawn

Withdrawal date: 19871126

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KUEHN, RAINER

Inventor name: BAUER, MANFRED, ING. GRAD.