CN1237321A - Circuit arrangement - Google Patents
Circuit arrangement Download PDFInfo
- Publication number
- CN1237321A CN1237321A CN 98801272 CN98801272A CN1237321A CN 1237321 A CN1237321 A CN 1237321A CN 98801272 CN98801272 CN 98801272 CN 98801272 A CN98801272 A CN 98801272A CN 1237321 A CN1237321 A CN 1237321A
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- China
- Prior art keywords
- winding
- circuit arrangement
- closed magnet
- magnet loop
- magnetic core
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- 238000004804 winding Methods 0.000 claims abstract description 55
- 230000004907 flux Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 102100040837 Galactoside alpha-(1,2)-fucosyltransferase 2 Human genes 0.000 abstract description 7
- 101000893710 Homo sapiens Galactoside alpha-(1,2)-fucosyltransferase 2 Proteins 0.000 abstract description 7
- 101000882406 Staphylococcus aureus Enterotoxin type C-1 Proteins 0.000 abstract description 7
- 101000882403 Staphylococcus aureus Enterotoxin type C-2 Proteins 0.000 abstract description 7
- 229920006395 saturated elastomer Polymers 0.000 abstract description 4
- 239000000696 magnetic material Substances 0.000 abstract description 2
- 238000009877 rendering Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
- H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
- H05B41/2827—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention relates to a circuit arrangement for supplying a lamp (La) with a high-frequency current, provided with a DC-AC converter which comprises a bridge circuit provided with bipolar switches (51,52), a control transformer (Lprim,SEC1,SEC2,P1,P2,Z1,Z3) for rendering the switches conducting and non-conducting, and a ballast coil (Lb,Z2). The control transformer and the ballast coil are integrated into one component in such a manner that the magnetic material surrounded by the secondary windings (SEC1,SEC2) of the control transformer becomes saturated during each high-frequency cycle, whereas the ballast coil does not become saturated. The control of the switches with low power losses and the ballast function are thus effectively realized by means of one component.
Description
The present invention relates to a kind ofly come circuit arrangement to an electric by high-frequency current, this configuration is provided with the DC-AC converter, and this DC-AC converter comprises:
Be used to be connected to the 1st input and the 2nd input of supply voltage source;
The configured in series of the 1st and the 2nd switch element is connected to the 1st input with the 1st end of described configured in series, and the 2nd end is connected to the 2nd input; And
Make the load branch of a shunting in this switch element, this branch road is provided with:
Be used to support the link of this lamp;
Control transformer comprises the 1st closed magnet loop of magnetisable material, around the 1st closed magnet loop elementary winding is set, is connected to the 1st secondary winding on the 1st switch element and is connected to the 2nd secondary winding on the 2nd switch element; And
Inductance device is provided with the magnetic core with two ends, and is provided with at least one winding L b, the elementary windings in series of this winding L b and this control transformer, and be centered around the magnetic core between the two ends and be provided with.
The present invention also relates to inductive element and miniature lamp.
By US5,434,480 know the circuit arrangement of mentioning in the 1st section.This known circuit arrangement is widely used for low-pressure mercury discharge lamp is powered.These lamps often are called as and have the compact fluorescent lamp that is integrated in the power supply circuits in the lamp.This compact fluorescent lamp has high luminous efficiency, and is widely used for very much using the place of incandescent lamp in the past.The shortcoming of the circuit arrangement that this is known is that it is made up of the many elements of number.Because the many elements of number of this circuit arrangement, assemble this circuit arrangement and it is integrated in the compact fluorescent lamp is more complicated.
The object of the present invention is to provide a kind of circuit arrangement of forming by the fewer element of number.
According to the present invention, as the circuit arrangement of mentioning in a section of beginning is exactly in order to reach this purpose, it is characterized in that: be connected on the 1st closed magnet loop by the end of magnetisable material with magnetic core, make two secondary winding around the part of the 1st closed magnet loop and be provided with, the magnetic flux that is produced by winding L b and elementary winding in the duration of work in this circuit arrangement in the 1st closed magnet loop strengthens mutually.
Because total magnetic flux is maximum in this part of the 1st closed magnet loop of being surrounded by secondary winding, thus this part saturable, and the remaining part and the magnetic core of the 1st magnet loop are unsaturated.Above-mentioned saturated be very favourable for making this switch element become nonconducting state faster, particularly the switch element of ifs circuit configuration is a bipolar transistor.Smaller power consumption in this switch element realizes by making this switch element become nonconducting state faster.This smaller power consumption provides the long useful life of this switch element.
This control transformer and this inductance device have been integrated in the inductance element according to circuit arrangement of the present invention.Because above-described result, assembling is according to the process of circuit arrangement of the present invention and to be integrated into it in miniature lamp be fairly simple.
This inductance device can comprise a ballast coil.The structure of this fairly simple circuit arrangement is suitable for following application: the supply power voltage of wherein supplying with this circuit arrangement has than higher amplitude, and the operating voltage of this lamp is lower simultaneously.
If the operating voltage of supplying with the supply power voltage of this circuit arrangement and/or this lamp with lower amplitude then may wish to use the inductance device that comprises transformer than higher.In a kind of like this embodiment according to circuit arrangement of the present invention, winding L b forms the elementary winding of this transformer.The link that is used to support lamp is connected to this Secondary winding of transformer.
This magnetic core can be provided with air-gap.Therefore, even for the more intense electric current that flows through winding L b, the magnetic flux in this magnetic core is also smaller, so just makes this magnetic core can not arrive saturation condition, and this inductance device comes work in desirable mode.
A kind of fairly simple thereby less expensive common formation the 1st closed magnet loop and the mode of magnetic core are to use two E cores.
Be suitable for very much miniature lamp according to a kind of circuit arrangement of the present invention, the electric ballast of small low-voltage mercury lamp particularly, this miniature lamp comprises:
Be provided with the light source of lamp housing, this lamp housing is closed and sees through visible light with air tight manner;
Outer cover, this outer cover is fixed on this light source, and is provided with light cover; And
Electric ballast, this electric ballast by conductivity be connected on this light source so that this light source is powered, this electric ballast is housed inside in the space that is centered on by this outer cover.
Explain embodiments of the invention hereinafter with reference to accompanying drawing, in these accompanying drawings:
Fig. 1 illustrates an embodiment according to inductance element of the present invention;
Fig. 2 illustrates the embodiment according to circuit arrangement of the present invention, and this circuit arrangement comprises an inductance element and have a connected lamp as shown in Figure 1; And
Fig. 3 illustrates an embodiment according to miniature lamp of the present invention.
In Fig. 1, M is the structure with the magnetic material of two E cores formation.This structure is made up of two parallel arm P1, P2, and arm P1, P2 are connected to each other by transverse arm Z1, Z2, Z3.Lprim, SEC1 and SEC2 are respectively the elementary winding and the 1st and the 2nd secondary winding of control transformer.These windings are provided with around transverse arm Z1.Transverse arm Z1 forms the 1st closed magnet loop with arm P1, P2 and transverse arm Z3.The 1st closed magnet loop forms control transformer with winding L prim, SEC1 and SEC2.Transverse arm Z2 forms magnetic core.Lb is a winding that forms ballast coil in the present embodiment with transverse arm Z2.Ls is an air-gap in transverse arm Z2.This 1E core comprises each half of arm P1 and transverse arm Z1, Z2, Z3.This 2E core comprises each half of arm P2 and transverse arm Z1, Z2, Z3.RV1 is the face of crosscut transverse arm Z3 vertically, wherein the 1st and the 2E core contact with each other.RV2 is the face of crosscut transverse arm Z1 vertically, wherein the 1st and the 2E core contact with each other.
In Fig. 2, K1 and K2 are respectively the 1st and the 2nd inputs that is connected to supply voltage source.Configured in series by the 1st switch element S1 and the 2nd switch element S2 is connected to K2 with K1.Switch element is in the present embodiment formed by bipolar transistor.Switch element S1 is shunted by diode D1, and switch element S2 is shunted by diode D2.Switch element S2 is shunted by a load branch, in the present embodiment, this load branch by elementary winding L prim, winding L b, be used to support the link K3 of lamp and K4 and capacitor C1 and form.Low-pressure mercury discharge lamp La is connected to link K3 and K4, and is shunted by capacitor C2.Each end of secondary winding SEC1 is connected to base stage and the emitter of switch element S1.Each end of secondary winding SEC2 is connected to base stage and the emitter of switch element S2.
Below be the work of the circuit arrangement shown in the magnetic element shown in Fig. 1 and Fig. 2.
When input K1 and K2 are connected to the dc voltage source, secondary winding SEC1 and SEC2 will make switch element S1 and S2 along with alternately conducting and non-conduction of high frequency.As its result, the high-frequency AC electric current flows through load branch, thus lamp La is powered.This high-frequency AC electric current causes the 1st magnetic flux among the structure M via winding L b.The 1st magnetic flux is presented in the 2nd closed magnet loop and the 3rd closed magnet loop, the 2nd closed magnet loop forms by transverse arm Z1, transverse arm Z2 with in those parts of arm P1 between transverse arm Z1 and Z2 and P2, and the 3rd closed magnet loop is formed by those parts of transverse arm Z3, transverse arm Z2 and arm P1 that exists between transverse arm Z2 and Z3 and P2.Because the 2nd and the existence of air-gap Ls in the 3rd closed magnet loop, the 1st magnetic flux is smaller.The high-frequency AC electric current that flows in load branch also causes the 2nd magnetic flux, and the 2nd magnetic flux is presented in the 1st closed magnet loop and the 2nd closed magnet loop via the elementary winding L prim of control transformer.But, consider the existence of air-gap Ls, the magnetic flux that is presented in the 2nd closed magnet loop is smaller.But, because the 1st closed magnet loop does not have air-gap, so the 2nd total magnetic flux is bigger.The the 1st and the 2nd magnetic flux strengthens mutually in transverse arm Z1, transverse arm Z2, partly cancels each other in transverse arm Z3.Because equal the 1st magnetic flux and the 2nd magnetic flux and total magnetic flux in transverse arm Z1, reach maximum, so the latter can enter saturation condition, and transverse arm Z2 and transverse arm Z3 do not become saturation condition.Because transverse arm Z1's is saturated, the voltage that presents between the two ends of secondary winding SEC1 and SEC2 descends quickly.This makes switch element S1 and S2 become nonconducting state quickly, so that consumes less power in switch element.Simultaneously, the ballast coil that is formed by transverse arm Z2 and winding L b continues to work in desirable mode, and this is that transverse arm Z2 does not become saturation condition owing to the cause because of air-gap.
In Fig. 3, the part of reference number 8 expression lamp housings, this lamp housing is closed and sees through visible light with air tight manner.The wall 6 of outer cover is connected on the lamp housing 8, and is provided with light cover 3, is present in the space of being sealed by this outer cover 7 according to circuit arrangement B of the present invention simultaneously.In the drawings, this circuit arrangement is expressed as by element P and C1 to C4 forms.Extend between the electrode (not shown) of connecting line 9 in this circuit arrangement and lamp housing.E is illustrated in this circuit arrangement and is configured in connecting line between the electric contact 1 and 2 on this light cover.
Because the winding L b of control transformer is connected with series system with elementary winding, so both flow through identical electric current in the duration of work of this circuit arrangement.But if the 1st closed magnet loop does not comprise an air-gap, then the magnetic flux by elementary winding induction is more a lot of greatly than the magnetic flux of being responded to by winding L b in the 1st closed magnet loop.
Claims (8)
1. one kind is come circuit arrangement to an electric by high-frequency current, and this configuration is provided with the DC-AC converter, and this DC-AC converter comprises:
Be used to be connected to the 1st input and the 2nd input of supply voltage source;
The configured in series of the 1st and the 2nd switch element is connected to the 1st input with the 1st end of described configured in series, and the 2nd end is connected to the 2nd input; And
Make the load branch of a shunting in this switch element, this branch road is provided with:
Be used to support the link of this lamp;
Control transformer comprises the 1st closed magnet loop of magnetisable material, around the 1st closed magnet loop elementary winding is set, is connected to the 1st secondary winding on the 1st switch element and is connected to the 2nd secondary winding on the 2nd switch element; And
Inductance device is provided with the magnetic core with two ends, and is provided with at least one winding L b, the elementary windings in series of this winding L b and this control transformer, and be centered around the magnetic core between the two ends and be provided with, it is characterized in that:
Be connected on the 1st closed magnet loop by the end of magnetisable material magnetic core, make two secondary winding around the part of the 1st closed magnet loop and be provided with, the magnetic flux that is produced by winding L b and elementary winding in the duration of work in this circuit arrangement in the 1st closed magnet loop strengthens mutually.
2. the circuit arrangement described in claim 1 is characterized in that:
This inductance device comprises a ballast coil.
3. the circuit arrangement described in claim 1 is characterized in that:
This inductance device comprises a transformer, and winding L b forms the elementary winding of described transformer.
4. as each or the circuit arrangement described in several of above-mentioned claim, it is characterized in that:
This magnetic core is provided with air-gap.
5. as each or the circuit arrangement described in several of above-mentioned claim, it is characterized in that:
The 1st closed magnet loop and magnetic core are formed by two E cores.
One kind as each or the circuit arrangement described in several of above-mentioned claim in the inductance element that uses, comprising:
Control transformer comprises the 1st closed magnet loop of magnetisable material, and elementary winding and two secondary winding are set around the 1st closed magnet loop; And
Inductance device is provided with the magnetic core with two ends, and is provided with at least one winding L b, the elementary windings in series of this winding L b and this control transformer, and be centered around the magnetic core between the two ends and be provided with, it is characterized in that:
Be connected on the 1st closed magnet loop by the end of magnetisable material magnetic core, make winding L b, elementary winding and two secondary winding around the 2nd closed magnet loop and be provided with, the 2nd closed magnet loop is formed by the part of magnetic core and the 1st closed magnet loop, and wherein the magnetic flux that is produced by winding L b and elementary winding strengthens mutually when described winding flows through electric current.
7. miniature lamp comprises:
Be provided with the light source of lamp housing, this lamp housing is closed and sees through visible light with air tight manner;
Outer cover, this outer cover is fixed on this light source, and is provided with light cover; And
Electric ballast, this electric ballast by conductivity be connected on this light source so that this light source is powered, this electric ballast is housed inside in the space that is centered on by this outer cover, it is characterized in that:
This electric ballast comprises as in the circuit arrangement described in the claim 1,2,3,4 or 5.
8. the miniature lamp described in claim 7 is characterized in that:
This light source is a low-pressure mercury discharge lamp.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97202684.3 | 1997-09-01 | ||
| EP97202684 | 1997-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1237321A true CN1237321A (en) | 1999-12-01 |
Family
ID=8228691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98801272 Pending CN1237321A (en) | 1997-09-01 | 1998-08-21 | Circuit arrangement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0981933A1 (en) |
| JP (1) | JP2001504984A (en) |
| CN (1) | CN1237321A (en) |
| WO (1) | WO1999012402A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915237B (en) * | 2013-01-08 | 2017-08-04 | 美的集团股份有限公司 | Inductive component |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484108A (en) * | 1982-08-02 | 1984-11-20 | North American Philips Corporation | High frequency ballast-ignition system for discharge lamps |
| US4559478A (en) * | 1983-06-28 | 1985-12-17 | U-Lite, Inc. | Fluorescent lamp circuit |
| US5434480A (en) * | 1993-10-12 | 1995-07-18 | Bobel; Andrzej A. | Electronic device for powering a gas discharge road from a low frequency source |
-
1998
- 1998-08-21 EP EP98937713A patent/EP0981933A1/en not_active Withdrawn
- 1998-08-21 WO PCT/IB1998/001302 patent/WO1999012402A1/en not_active Application Discontinuation
- 1998-08-21 JP JP51649899A patent/JP2001504984A/en active Pending
- 1998-08-21 CN CN 98801272 patent/CN1237321A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0981933A1 (en) | 2000-03-01 |
| JP2001504984A (en) | 2001-04-10 |
| WO1999012402A1 (en) | 1999-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |