EP0030737B1 - Ballast for gaseous discharge lamps - Google Patents

Ballast for gaseous discharge lamps Download PDF

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Publication number
EP0030737B1
EP0030737B1 EP19800107979 EP80107979A EP0030737B1 EP 0030737 B1 EP0030737 B1 EP 0030737B1 EP 19800107979 EP19800107979 EP 19800107979 EP 80107979 A EP80107979 A EP 80107979A EP 0030737 B1 EP0030737 B1 EP 0030737B1
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EP
European Patent Office
Prior art keywords
ballast
core
core packet
breadth
lamp
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
EP19800107979
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German (de)
French (fr)
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EP0030737A1 (en
Inventor
Robert Tschuk
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.)
MAGNETEK MAY & CHRISTE GMBH TE OBERURSEL, BONDSREP
Original Assignee
MAY AND CHRISTE GmbH TRANSFORMATORENWERKE
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Publication of EP0030737A1 publication Critical patent/EP0030737A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse

Definitions

  • the invention relates to a ballast for fluorescent lamps with a built-in sheathed construction, layered in the longitudinal axis core of the magnetic circuit, with a coil inserted into the core window, the height of the core package about half the width of the core package, the width of the middle leg about is equal to a quarter of the width of the core package and the width of the side legs and the height of the yoke parts is approximately equal to one eighth of the width of the core package.
  • a ballast is known from DE-A-19 17 938. From “Sturm, ballasts for discharge lamps,” 4th edition, pages 110 and 111, you can see a ballast with a starter mounted in the longitudinal direction.
  • the invention has for its object to provide a ballast of the type described for modern fluorescent lamps of the extended power levels, such as 36 and 58 watts, with a reduced tube diameter of, for example, 26 mm, which has the smallest possible height and in connection with a compact design results in a minimal cross section of the entire luminaire.
  • the width of the core package is approximately equal to the diameter of the fluorescent lamp, that in the extension of the core package an insulating part with a cross section approximately equal to that of the core package is attached to at least one end face, and in this insulating part the accessories for the Luminaire, glow starter, capacitor for the glow starter, temperature fuse and radio interference suppression capacitor are arranged, resulting in an integrated ballast which is completed by the accessories and which can be fastened in the carrier profile of the luminaire.
  • the core package is initially adapted to the lamp diameter in terms of its dimensions.
  • the insulating parts with an adapted cross-section adjoin the end faces of such a core package, which are thus suitable for accommodating further accessories of the luminaire, so that there is the possibility of integrating the ballast with these accessories as a unit into the dimensions of the fluorescent lamp To accommodate the luminaire housing.
  • connection lines such as for starter operation, are expediently laid in the core windows or in a longitudinal recess in a magnetically neutral zone of the core package. As a result, these connecting lines do not protrude beyond the miniaturized core cross section.
  • box-shaped insulating parts are advantageously attached on both end faces and the accessories for the lamp are arranged distributed in both insulating parts.
  • the box-shaped insulating parts are expediently provided with a cover for covering the accessories.
  • the ballast completed with the accessories can advantageously be pushed into the carrier profile of the lamp.
  • FIGS. 1 and 2 show a ballast without insulating parts on the front parts with a core package 1 in a longitudinally layered jacket construction, associated coil 2 and indicated fluorescent lamp 3.
  • the magnetic circuit of the core package 1 can be constructed from ET sheets, EE sheets, etc.
  • the width of the core package 1 is B, the height of the core package 1 H and the length of the core package 1 L.
  • the diameter of the fluorescent lamp 3 is D.
  • the width B of the core package 1 is equal to the diameter D of the fluorescent lamp arranged directly above it.
  • the height H of the core package 1 is half its width B.
  • the width of the middle leg of the core package b is equal to a quarter of the width of the core package 1 B, the width of the side legs of the core package 1 and the height of the yoke parts of the core package 1 is b / 2, i.e. half the width b of the middle leg. This results in square core windows of height h equal to width b.
  • the relationship is:
  • a flat, elongated choke coil is obtained while maintaining the specific material stress, such as the magnetic induction in the magnetic circuit and the current density in the conductor of the coil 2, while the material expenditure for Core package 1 and coil 2 are no larger than the previously known approximately square cross-sectional shapes of core package 1.
  • the winding cross-section for coil 2 is halved and the layer length of core package 1 is doubled, so that there is no additional expenditure on winding material and core material to achieve the same properties of the inductor surrender.
  • FIGS. 3 to 7 show an exemplary embodiment of a ballast according to the invention, in which the insulating parts on both sides of the core package 1 of the choke coil are designed with box-shaped extensions 4 and covers 5 in the longitudinal direction of the choke coil.
  • the lid 5 has upstanding projections 6 which are adapted to the cross section of the support profile of the fluorescent lamp for insertion into it.
  • the cross section of the extensions 4 together with the cover 5 is slightly larger than that of the core package 1.
  • glow starter 7 and the capacitor 8 for the glow starter 7 are attached within their cross section.
  • the radio interference suppression capacitor 9 and the temperature fuse 10 are likewise attached to the other extension 4 within their cross section.
  • a longitudinal recess 11 is provided in the magnetically neutral zone, in which the connecting lines 12 required for starter operation are laid.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Description

Die Erfindung bezieht sich auf ein Vorschaltgerät für Leuchtstofflampen mit in Mantelbauweise aufgebautem, in der Längsachse geschichteten Kern des magnetischen Kreises, mit in die Kernfenster eingelegter Spule, wobei die Höhe des Kernpakets etwa halb so gross wie die Breite des Kernpakets, die Breite des Mittelschenkels etwa gleich einem Viertel der Breite des Kernpakets und die Breite der Seitenschenkel sowie die Höhe der Jochteile jeweils etwa gleich einem Achtel der Breite des Kernpakets ist. Ein derartiges Vorschaltgerät ist aus der DE-A-19 17 938 bekannt. Aus «Sturm, Vorschaltgeräte für Entladungslampen,» 4. Auflage, Seite 110 und 111, lässt sich ein Vorschaltgerät mit in Längsrichtung angebautem Starter entnehmen.The invention relates to a ballast for fluorescent lamps with a built-in sheathed construction, layered in the longitudinal axis core of the magnetic circuit, with a coil inserted into the core window, the height of the core package about half the width of the core package, the width of the middle leg about is equal to a quarter of the width of the core package and the width of the side legs and the height of the yoke parts is approximately equal to one eighth of the width of the core package. Such a ballast is known from DE-A-19 17 938. From “Sturm, ballasts for discharge lamps,” 4th edition, pages 110 and 111, you can see a ballast with a starter mounted in the longitudinal direction.

Mit der fortschreitenden Entwicklung der Leuchtstofflampen sind solche mit einem verminderten Rohrdurchmesser von 26 mm geschaffen worden, an die die übrigen Teile der Leuchten einschliesslich der Vorschaltgeräte anzupassen sind, damit mit der Verkleinerung der Rohrdurchmesser insgesamt eine Miniaturisierung der Leuchte möglich ist.With the progressive development of fluorescent lamps, those with a reduced tube diameter of 26 mm have been created, to which the remaining parts of the lights, including the ballasts, have to be adapted, so that a miniaturization of the light is possible overall by reducing the tube diameter.

Dementsprechend liegt der Erfindung die Aufgabe zugrunde, ein Vorschaltgerät der eingangs beschriebenen Art für moderne Leuchtstofflampen der erweiterten Leistungsstufen, wie beispielsweise 36 und 58 Watt, mit einem verkleinerten Rohrdurchmesser von beispielsweise 26 mm zu schaffen, welches eine möglichst kleine Bauhöhe hat und in Verbindung mit einer kompakten Bauweise einen minimalen Querschnitt der gesamten Leuchte ergibt.Accordingly, the invention has for its object to provide a ballast of the type described for modern fluorescent lamps of the extended power levels, such as 36 and 58 watts, with a reduced tube diameter of, for example, 26 mm, which has the smallest possible height and in connection with a compact design results in a minimal cross section of the entire luminaire.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Breite des Kernpakets etwa gleich dem Durchmesser der Leuchtstofflampe ist, dass in Verlängerung des Kernpakets an mindestens einer Stirnseite ein Isolierteil mit einem Querschnitt etwa gleich dem des Kernpakets angebracht ist un dass in diesem Isolierteil die Zubehörteile für die Leuchte, Glimmzünder, Kondensator für den Glimmzündec, Temperatursicherung und Funkentstörkondensator, angeordnet sind, wodurch sich ein durch die Zubehörteile komplettiertes integriertes Vorschaltgerät ergibt, das im Trägerprofil der Leuchte befestigbar ist. Entsprechend dieser Lösung ist zunächst einmal das Kernpaket hinsichtlich seiner Abmessungen an den Lampendurchmesser angepasst. Erfindungsgemäss schliessen sich an die Stirnseiten eines derartig dimensionierten Kernpakets die Isolierteile mit angepasstem Querschnitt an, welche somit geeignet sind, weitere Zubehörteile der Leuchte aufzunehmen, so dass die Möglichkeit besteht, das Vorschaltgerät mit diesen Zubehörteilen in Anpassung an die Dimensionen der Leuchtstofflampe als Einheit in einem Leuchtengehäuse unterzubringen. Dadurch ergibt sich ein in Serienfertigung rationell herstellbares kompaktes Vorschaltgerät, welches einfach in der Leuchte montierbar ist, wobei die bisher in der Leuchte getrennt durchzuführenden Arbeitsgänge beim Montieren der Zubehörteile bereits bei der Herstellung des kompakten Vorschaltgerätes als Einheit in der Serienproduktion rationell durchgeführt werden können.This object is achieved according to the invention in that the width of the core package is approximately equal to the diameter of the fluorescent lamp, that in the extension of the core package an insulating part with a cross section approximately equal to that of the core package is attached to at least one end face, and in this insulating part the accessories for the Luminaire, glow starter, capacitor for the glow starter, temperature fuse and radio interference suppression capacitor are arranged, resulting in an integrated ballast which is completed by the accessories and which can be fastened in the carrier profile of the luminaire. According to this solution, the core package is initially adapted to the lamp diameter in terms of its dimensions. According to the invention, the insulating parts with an adapted cross-section adjoin the end faces of such a core package, which are thus suitable for accommodating further accessories of the luminaire, so that there is the possibility of integrating the ballast with these accessories as a unit into the dimensions of the fluorescent lamp To accommodate the luminaire housing. This results in a compact ballast that can be rationally produced in series production and that can be easily installed in the luminaire, whereby the work steps previously carried out separately in the luminaire when mounting the accessories can already be carried out rationally during the production of the compact ballast as a unit in series production.

Zweckmässig sind die erforderlichen elektrischen Verbindungsleitungen, wie für den Starterbetrieb, in den Kernfenstern oder in einer Längsausnehmung in einer magnetisch neutralen Zone des Kernpakets verlegt. Hierdurch stehen diese Verbindungsleitungen nicht über den miniaturisierten Kernquerschnitt hinaus.The necessary electrical connection lines, such as for starter operation, are expediently laid in the core windows or in a longitudinal recess in a magnetically neutral zone of the core package. As a result, these connecting lines do not protrude beyond the miniaturized core cross section.

Vorteilhaft sind in Verlängerung des Kernpakets an beiden Stirnseiten kastenförmige Isolierteile angebracht und die Zubehörteile für die Leuchte in beide Isolierteile verteilt angeordnet.In an extension of the core package, box-shaped insulating parts are advantageously attached on both end faces and the accessories for the lamp are arranged distributed in both insulating parts.

Die kastenförmigen Isolierteile sind zweckmässig zum Abdecken der Zubehörteile mit jeweils einem Deckel versehen. Zum Zwecke der möglichst einfachen Zusammenstellung der Leuchte ist vorteilhaft das mit den Zubehörteilen komplettierte Vorschaltgerät in das Trägerprofil der Leuchte einschiebbar.The box-shaped insulating parts are expediently provided with a cover for covering the accessories. For the purpose of making the lamp assembly as simple as possible, the ballast completed with the accessories can advantageously be pushed into the carrier profile of the lamp.

Die Erfindung ist im folgenden anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher beschrieben. In den Zeichnungen zeigen

  • Figur 1 einen Querschnitt durch ein Vorschaltgerät,
  • Figur 2 eine perspektivische Ansicht von Kernpaket und Spule des Vorschaltgeräts nach Figur 1,
  • Figur 3 eine Seitenschnittansicht eines erfindungsgemässen Vorschaltgeräts in integriertem Aufbau,
  • Figur 4 eine Draufsicht auf das integrierte Vorschaltgerät nach Figur 3, und
  • Figuren 5, 6 und 7 Querschnitte durch das integrierte Vorschaltgerät gemäss Figur 3 längs der Linien V-V, VI-VI und VII-VII in Figur 3.
The invention is described below with reference to an embodiment shown in the drawings. Show in the drawings
  • FIG. 1 shows a cross section through a ballast,
  • FIG. 2 shows a perspective view of the core package and coil of the ballast according to FIG. 1,
  • 3 shows a sectional side view of a ballast according to the invention in an integrated structure,
  • Figure 4 is a plan view of the integrated ballast of Figure 3, and
  • Figures 5, 6 and 7 cross sections through the integrated ballast according to Figure 3 along the lines VV, VI-VI and VII-VII in Figure 3.

In den Figuren 1 und 2 ist ein Vorschaltgerät ohne Isolierteile an den Stirnteilen mit einem Kernpaket 1 in längsgeschichteter Mantelbauweise, zugehöriger Spule 2 sowie angedeuteter Leuchtstofflampe 3 dargestellt. Der magnetische Kreis des Kernpakets 1 kann aus ET-Blechen, EE-Blechen usw. aufgebaut sein.FIGS. 1 and 2 show a ballast without insulating parts on the front parts with a core package 1 in a longitudinally layered jacket construction, associated coil 2 and indicated fluorescent lamp 3. The magnetic circuit of the core package 1 can be constructed from ET sheets, EE sheets, etc.

Die Breite des Kernpakets 1 ist B, die Höhe des Kernpakets 1 H und die Länge des Kernpakets 1 L. Der Durchmesser der Leuchtstofflampe 3 ist D. Die Breite B des Kernpakets 1 ist gleich dem Durchmesser D der unmittelbar darüber angeordneten Leuchtstofflampe. Die Höhe H des Kernpakets 1 ist die Hälfte von dessen Breite B. Die Breite des Mittelschenkels des Kernpakets ist b gleich einem Viertel der Breite des Kernpakets 1 B, die Breite der Seitenschenkel des Kernpakets 1 wie auch die Höhe der Jochteile des Kernpakets 1 ist b/2, also die Hälfte der Breite b des Mittelschenkels. Damit ergeben sich quadratische Kernfenster der Höhe h gleich Breite b. Es ergibt sich der Zusammenhang:

Figure imgb0001
The width of the core package 1 is B, the height of the core package 1 H and the length of the core package 1 L. The diameter of the fluorescent lamp 3 is D. The width B of the core package 1 is equal to the diameter D of the fluorescent lamp arranged directly above it. The height H of the core package 1 is half its width B. The width of the middle leg of the core package b is equal to a quarter of the width of the core package 1 B, the width of the side legs of the core package 1 and the height of the yoke parts of the core package 1 is b / 2, i.e. half the width b of the middle leg. This results in square core windows of height h equal to width b. The relationship is:
Figure imgb0001

Durch eine derartige Bemessung des Kernpakets 1 erhält man eine flache langgestreckte Drosselspule unter Beibehaltung der spezifischen Materialbeanspruchung wie der magnetischen Induktion im magnetischen Kreis und der Stromdichte im Leiter der Spule 2, während die Materialaufwendungen für Kernpaket 1 und Spule 2 nicht grösser sind als bei bisher bekannten etwa quadratischen Querschnittsformen des Kernpakets 1. Der Wickelquerschnitt für die Spule 2 ist halbiert und die Schichtlänge des Kernpakets 1 verdoppelt, so dass sich zur Erzielung gleicher Eigenschaften der Drosselspule keine Mehraufwendungen an Wickelmaterial und Kernmaterial ergeben.By dimensioning the core package 1 in this way, a flat, elongated choke coil is obtained while maintaining the specific material stress, such as the magnetic induction in the magnetic circuit and the current density in the conductor of the coil 2, while the material expenditure for Core package 1 and coil 2 are no larger than the previously known approximately square cross-sectional shapes of core package 1. The winding cross-section for coil 2 is halved and the layer length of core package 1 is doubled, so that there is no additional expenditure on winding material and core material to achieve the same properties of the inductor surrender.

In den Figuren 3 bis 7 ist ein Ausführungsbeispiel eines erfindungsgemässen Vorschaltgeräts dargestellt, bei welchem die Isolierteile an beiden Seiten des Kernpakets 1 der Drosselspule in Längsrichtung der Drosselspule mit kastenförmigen Verlängerungen 4 und Deckel 5 ausgebildet sind. Der Deckel 5 weist nach oben stehende Fortsätze 6 auf, welche dem Querschnitt des Trägerprofils der Leuchtstofflampe zum Einschieben in dieses angepasst sind. Der Querschnitt der Verlängerungen 4 samt Deckel 5 ist geringfügig grösser als der des Kernpakets 1.FIGS. 3 to 7 show an exemplary embodiment of a ballast according to the invention, in which the insulating parts on both sides of the core package 1 of the choke coil are designed with box-shaped extensions 4 and covers 5 in the longitudinal direction of the choke coil. The lid 5 has upstanding projections 6 which are adapted to the cross section of the support profile of the fluorescent lamp for insertion into it. The cross section of the extensions 4 together with the cover 5 is slightly larger than that of the core package 1.

An der einen Verlängerung 4 sind innerhalb deren Querschnitts Glimmzünder 7 und der Kondensator 8 für den Glimmzünder 7 angebracht. An der anderen Verlängerung 4 sind ebenfalls innerhalb deren Querschnitts der Funkentstörkondensator 9 sowie die Temperatursicherung 10 angebracht.On the one extension 4 glow starter 7 and the capacitor 8 for the glow starter 7 are attached within their cross section. The radio interference suppression capacitor 9 and the temperature fuse 10 are likewise attached to the other extension 4 within their cross section.

In dem Kernpaket 1 ist in der magnetisch neutra len Zone eine Längsausnehmung 11 vorgesehen, in welcher die für den Starterbetrieb erforderlichen Verbindungsleitungen 12 verlegt sind.In the core package 1, a longitudinal recess 11 is provided in the magnetically neutral zone, in which the connecting lines 12 required for starter operation are laid.

Durch die Integrierung der bisher in der Leuchte einzeln zu montierenden Zubehörteile in das integrierte Vorschaltgerät auf beiden Stirnseiten desselben wird es möglich, die bisherige blosse Drosselspule als Vorschaltgerät in einer Einheit herzustellen, wobei die bisher in der Leuchte getrennt durchgeführten Arbeitsgänge beim Verschalten in der Serienproduktion rationell bei der Herstellung des integrierten Vorschaltgeräts durchführbar sind. Das integrierte Vorschaltgerät braucht nach seiner Herstellung lediglich am Trägerprofil der Leuchte angebracht werden, worauf nur noch an jeder Stirnseite des Leuchtenprofils die beiden Leitungsverbindungen zur Fassung hergestellt werden müssen.By integrating the accessories that were previously to be installed individually in the luminaire into the integrated ballast on both ends of the same, it is now possible to manufacture the previous bare choke coil as a ballast in one unit, with the operations previously carried out separately in the luminaire being rational when switching in series production are feasible in the manufacture of the integrated ballast. The integrated ballast only needs to be attached to the support profile of the luminaire after its manufacture, whereupon the two line connections to the socket only have to be made on each end face of the luminaire profile.

Claims (5)

1. A ballast for fluorescent lamps (3) having a core of the magnetic circuit constructed in a sleeve- like manner and layered in the direction of the longitudinal axis, having a coil (2) positioned in the core window, the height (H) of the core packet (1) being approximately half as large as the breadth (B) of the core packet (1), the breadth (b) of the central limb being approximately a quarter of the breadth (B) of the core packet (1) and the breadth of the side limbs and the height of the yoke parts being in each case approximately equal to an eighth of the breadth (B) of the core packet (1), characterised in that the breadth (B) of the core packet (1) is approximately equal to the diameter (D) of the fluorescent lamp, in that in an extension of the core packet (1) on at least one end face an isolation part (4) having a cross- section approximately equal to that of the core packet is positioned, and in that in this isolation part the components for the lamp, glow ignition (7), capacitor (8) for the glow ignition (7), temperature fuse (10) and suppression capacitor (9) are arranged, whereby there results an integrated ballast completed by the components, which ballast is securable in the carrier profile of the lamp.
2. A ballast according to claim 1 characterised in that the necessary electrical connection conductors (12) such as for starter operation, are positioned in the core windows or in a longitudinal aperture (11) in a magnetically neutral zone of the core packet (1).
3. A ballast according to claim 1 or 2 characterised in that, in the extension of the core packet (1) on both side faces, box-like isolation parts (4) are positioned and the components (7, 8, 9, 10) for the lamp are divided in both isolation parts.
4. A ballast according to one of claims 1 to 3 characterised in that the box-shaped isolation parts (4) are each provided with a cover (5) for covering of the components (7, 8, 9, 10).
5. A ballast according to one of claims 1 to 4 characterised in that the ballast completed with the components (7, 8, 9, 10) is insertable into the carrier profile of the lamp.
EP19800107979 1979-12-17 1980-12-17 Ballast for gaseous discharge lamps Expired EP0030737B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792950789 DE2950789C2 (en) 1979-12-17 1979-12-17 Ballast for fluorescent lamps
DE2950789 1979-12-17

Publications (2)

Publication Number Publication Date
EP0030737A1 EP0030737A1 (en) 1981-06-24
EP0030737B1 true EP0030737B1 (en) 1983-11-23

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Application Number Title Priority Date Filing Date
EP19800107979 Expired EP0030737B1 (en) 1979-12-17 1980-12-17 Ballast for gaseous discharge lamps

Country Status (4)

Country Link
EP (1) EP0030737B1 (en)
DE (1) DE2950789C2 (en)
HK (1) HK13186A (en)
SG (1) SG69885G (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309109C2 (en) * 1983-03-15 1985-06-20 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7067 Urbach Choke, small transformer or similar device
DE3309108C2 (en) * 1983-03-15 1985-10-03 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7068 Urbach Choke or small transformer
DE3309110C2 (en) * 1983-03-15 1985-03-21 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7067 Urbach Choke or transformer, in particular as a ballast for gas discharge lamps
DE4134027A1 (en) * 1991-10-15 1993-04-22 Vossloh Schwabe Gmbh Series connected device, e.g. for lamps, with integral auxiliary lead - forms galvanised connection between two clamps arranged either side of ferromagnetic core
DE4134036A1 (en) * 1991-10-15 1993-04-22 Vossloh Schwabe Gmbh Luminaire unit with sockets for gas discharge lamp(s) - has clamps either side of core for connection to external wiring connected across core by electric lead
DE19680918D2 (en) * 1995-10-31 1999-09-23 Bag Turgi Superimposed ignitor

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Publication number Priority date Publication date Assignee Title
US2428948A (en) * 1945-02-27 1947-10-14 Rca Corp High-voltage transformer
DE809835C (en) * 1946-07-17 1951-08-02 Philips Nv Enveloped auxiliary device with an iron circuit for operating gas discharge tubes
DE1704297U (en) * 1953-07-24 1955-08-04 Bbc Brown Boveri & Cie THROTTLE COIL, IN PARTICULAR FOR CONTROL DEVICES FOR FLUORESCENT LAMPS.
FR1476676A (en) * 1966-02-04 1967-04-14 Process for the production of transformers, auto-transformers, chokes and similar devices
DE1917938A1 (en) * 1969-04-09 1970-10-15 Siemens Ag Electric choke coil for the operation of fluorescent lamps
AT304690B (en) * 1970-02-05 1973-01-25 Zumtobel Walter Transformer or induction coil
DE7022319U (en) * 1970-06-13 1970-09-10 Siemens Ag TRANSFORMER
ES398127A1 (en) * 1970-12-28 1974-07-16 Knobel Elektro App Laminated magnetic core for induction devices and laminations for forming such magnetic core
DE2244158C3 (en) * 1972-09-08 1979-09-06 Fa. Hermann Schwabe, 7067 Urbach Choke or transformer, in particular as a ballast for gas discharge lamps
IT1037157B (en) * 1974-02-21 1979-11-10 Hirst Harry NUCLEAD FOR ELECTROMAGNETIC DEVICES SUCH AS TRANSFORMERS OR SIMILAR
NL7404518A (en) * 1974-04-03 1975-10-07 Nederlandse Gasunie Nv INTRINSICALLY SAFE POWER SOURCE.
AU488513B1 (en) * 1974-07-04 1975-05-15 Ferguson Transformers Pty. Ltd Electric choke unit
AU502931B2 (en) * 1976-02-10 1979-08-16 Ferguson Transformers Pty. Ltd Coil carrying bobbin wrap
FR2352381A1 (en) * 1976-05-21 1977-12-16 Telemecanique Electrique Electromagnet coil assembly with printed circuit board - has printed circuit board mounted on one flange of coil
DE2652171A1 (en) * 1976-11-16 1978-05-24 Bertos Ag CONTROL UNIT ETC. WITH E- AND I-SHAPED CORE PLATES

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Publication number Publication date
DE2950789C2 (en) 1982-07-01
EP0030737A1 (en) 1981-06-24
DE2950789A1 (en) 1981-06-25
SG69885G (en) 1986-11-21
HK13186A (en) 1986-03-07

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