CN220108266U - LED inductance ballast for reducing electromagnetic interference - Google Patents
LED inductance ballast for reducing electromagnetic interference Download PDFInfo
- Publication number
- CN220108266U CN220108266U CN202320910735.2U CN202320910735U CN220108266U CN 220108266 U CN220108266 U CN 220108266U CN 202320910735 U CN202320910735 U CN 202320910735U CN 220108266 U CN220108266 U CN 220108266U
- Authority
- CN
- China
- Prior art keywords
- circuit
- interference
- ballast
- panel
- electromagnetic interference
- 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.)
- Active
Links
- 238000001914 filtration Methods 0.000 claims abstract description 36
- 230000001939 inductive effect Effects 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
The utility model discloses an LED inductance ballast for reducing electromagnetic interference, which comprises a plurality of filtering signal loops, a plurality of power components and an anti-magnetic interference panel, wherein the filtering signal loops, the power components and the anti-magnetic interference panel are arranged on a circuit integrated board; the power components are connected by wires passing through the anti-magnetic interference panel and are distributed into a plurality of interference source areas through the anti-magnetic interference panel; in addition, an RC decoupling circuit is added in the ballast switching tube power supply circuit, the power components are divided into a plurality of interference sources by re-arranging the filtering signal loop and the power components on the circuit integrated board of the inductive ballast, and the interference sources and the filtering signal loop are separated and isolated by adopting an anti-magnetic interference panel with copper-coated materials or other anti-magnetic effects, so that an electromagnetic shielding field in a semi-closed state can be formed, electromagnetic cross interference effect formed between different electromagnetic interference sources can be effectively prevented, and electromagnetic interference is reduced.
Description
Technical Field
The utility model relates to the technical field of ballasts, in particular to an LED inductance ballast for reducing electromagnetic interference.
Background
The inductance ballast of the LED lamp is exactly a step-down circuit, and in the working state, the inductance ballast is a low direct-current voltage; because gas discharge lamps (such as fluorescent lamps, neon lamps, metal halide lamps and the like) are negative resistance electric light sources with V-I characteristics, namely negative values, when the lamp current rises, the working voltage of the lamp tube drops, but the power supply voltage does not drop, and the lamp current further rises after a plurality of voltages are added to the lamp tube, the lamp tube is circulated in such a way, and finally burnt out or extinguished, so that the lamp tube works normally, and ballasting elements are matched for limiting and stabilizing the lamp current. This current limiting device is called a ballast.
At present, common conducted electromagnetic interference is divided into a common mode and a differential mode, wherein the common mode interference suppression technology is relatively more difficult, because more power elements are arranged on a main circuit board of the inductive ballast, and meanwhile, the power elements and an input filtering loop are basically arranged in a crossing way, so that a larger electromagnetic interference phenomenon is generated between the filtering loop and a plurality of power elements.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.
Therefore, an objective of the present utility model is to provide an LED inductance ballast for reducing electromagnetic interference, so as to solve the problem that the LED inductance ballast proposed in the background art generates a large electromagnetic interference phenomenon between the filtering loop and the power elements during use.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an LED inductance ballast for reducing electromagnetic interference comprises a plurality of filtering signal loops, a plurality of power components and an anti-magnetic interference panel, wherein the filtering signal loops, the power components and the anti-magnetic interference panel are arranged on a circuit integrated board;
the power components are connected by wires passing through the anti-magnetic interference panel and are distributed into a plurality of interference source areas through the anti-magnetic interference panel;
in addition, an RC decoupling circuit is added in the ballast switching tube power supply circuit, so that the current required by the switching tube at the moment of opening is not supplied by a power supply, and a decoupling capacitor supplies a current compensation source for the device.
As a preferred scheme of the LED inductive ballast for reducing electromagnetic interference, the filtering signal loop includes an input port and an output port, and further includes at least a surge absorption loop and a common mode filter circuit, and at the same time, the common mode filter circuit is connected to the surge absorption loop, the surge absorption loop is connected to the input port, and the output port is connected to the common mode filter circuit.
As a preferable scheme of the LED inductance ballast for reducing electromagnetic interference, the trend of the anti-magnetic interference panel can be set to be linear, folded and curved, and the anti-magnetic interference panel is also provided with a wire hole which is convenient for a wire to pass through.
As a preferred scheme of the LED inductive ballast for reducing electromagnetic interference, the filtering signal circuit includes an input port and an output port, at least a common mode filtering circuit and a surge absorption circuit, the output port is connected with the common mode filtering circuit, the common mode filtering circuit is connected with the surge absorption circuit, and the input port is connected with the surge absorption circuit.
As a preferable scheme of the LED inductive ballast for reducing electromagnetic interference, the power supply circuit of the relay on the LED inductive ballast comprises a voltage reduction, rectification, voltage stabilization and filtering circuit, and the output direct-current voltage of the power supply circuit provides power for the relay.
Compared with the prior art, the utility model has the beneficial effects that: the LED inductance ballast for reducing electromagnetic interference has a simple and reasonable structural scheme and obvious effect of reducing electromagnetic interference; when the electromagnetic shielding device is applied, the filtering signal loop and the power components on the circuit integrated board of the inductive ballast are rearranged, the power components are divided into a plurality of interference sources, and the interference sources and the filtering signal loop are separated and isolated by adopting a copper-clad material or other antimagnetic interference panels with antimagnetic effects, so that an electromagnetic shielding field in a semi-closed state can be formed, electromagnetic cross interference influence formed between different electromagnetic interference sources can be effectively prevented, and electromagnetic interference is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the scheme of the utility model.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the overall structure of an LED inductance ballast for reducing electromagnetic interference according to the present utility model, referring to fig. 1, the LED inductance ballast for reducing electromagnetic interference according to the present embodiment includes a plurality of filter signal loops 20, a plurality of power components 30 and an anti-magnetic interference panel 40 disposed on a circuit board 10; the different power components 30 are connected by wires passing through the anti-magnetic interference panel 40 and are connected by wires, and the plurality of power components 30 are distributed into a plurality of interference source areas through the anti-magnetic interference panel 40.
The filtering signal loop 20 comprises an input port and an output port, and further comprises at least a surge absorption loop and a common mode filtering circuit, wherein the common mode filtering circuit is connected with the surge absorption loop, the surge absorption loop is connected with the input port, and the output port is connected with the common mode filtering circuit; the trend of the anti-magnetic interference panel 40 can be set to be linear, folded linear and curved, and the anti-magnetic interference panel 40 is also provided with a wire hole which is convenient for the wire to pass through; the filtering signal circuit 20 includes an input port and an output port, at least a common mode filter circuit and a surge absorption circuit, the output port is connected with the common mode filter circuit, the common mode filter circuit is connected with the surge absorption circuit, the input port is connected with the surge absorption circuit, in this embodiment, when the filtering signal circuit is applied, the filtering signal circuit 20 and the power component 30 on the circuit integrated board 10 of the inductive ballast are rearranged, the power component 30 is divided into a plurality of interference sources, and the interference sources and the filtering signal circuit 20 are separated and isolated by adopting the anti-magnetic interference panel 40 with copper-clad material or other anti-magnetic effect, so that an electromagnetic shielding field in a semi-closed state can be formed, electromagnetic cross interference between different electromagnetic interference sources can be effectively prevented, and electromagnetic interference is reduced.
Further, it is understood that the isolation layout of the power components 30 is not limited to a specific number, and the isolation may be performed by the anti-magnetic interference panel 40 according to the power of the components, so long as the main electromagnetic interference source can be eliminated.
Furthermore, the power supply circuit for the relay on the LED inductive ballast comprises a voltage reduction, rectification, voltage stabilization and filtering circuit, the output direct current voltage of the power supply circuit provides power for the relay, the grounding wire is reasonably arranged to be as short as possible in order to cope with electromagnetic conduction interference, the input ground and the output ground are separated, and an independent grounding wire is connected with one point in parallel to the grounding mode, so that the conduction coupling between all the grounds can be prevented, and the interference between control signals is reduced. The shielding of the electric field can be realized by grounding the shell, and the interference to the internal and external circuits is weakened by using the shielding.
Furthermore, an RC decoupling circuit is added in a ballast switching tube power supply circuit, so that the current required by the switching tube at the moment of switching on is not supplied by a power supply, and a decoupling capacitor provides a current compensation source for the device, so that noise formed by current fluctuation caused in the power supply and a grounding system is reduced; in addition, in the half-bridge inverter circuit of the electronic ballast, the capacitance between the midpoint of the half-bridge and the ground can be reduced to reduce DeltaU/Deltatand DeltaI/Deltat, thereby being beneficial to inhibiting electromagnetic interference and electromagnetic noise.
In summary, in the LED inductive ballast for reducing electromagnetic interference according to the present embodiment, during operation, the filtering signal circuit 20 and the power component 30 on the circuit board 10 of the inductive ballast are rearranged to divide the power component 30 into a plurality of interference sources, and the interference sources and the filtering signal circuit 20 are separated and isolated by using the anti-magnetic interference panel 40 with copper-clad material or other anti-magnetic effects, so that an electromagnetic shielding field in a semi-closed state can be formed, electromagnetic cross-talk effects formed between different electromagnetic interference sources can be effectively prevented, and electromagnetic interference is reduced.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. An LED inductive ballast for reducing electromagnetic interference is characterized by comprising a plurality of filtering signal loops (20), a plurality of power components (30) and an anti-magnetic interference panel (40) which are arranged on a circuit integrated board (10);
wherein different power components (30) are connected by wires passing through the anti-magnetic interference panel (40) and are connected by wires, and the power components (30) are distributed into a plurality of interference source areas through the anti-magnetic interference panel (40);
in addition, an RC decoupling circuit is added in the ballast switching tube power supply circuit, so that the current required by the switching tube at the moment of opening is not supplied by a power supply, and a decoupling capacitor supplies a current compensation source for the device.
2. An LED inductance ballast for reducing electromagnetic interference according to claim 1, wherein: the filtering signal loop (20) comprises an input port and an output port, and further comprises at least a surge absorption loop and a common mode filtering circuit, wherein the common mode filtering circuit is connected with the surge absorption loop, the surge absorption loop is connected with the input port, and the output port is connected with the common mode filtering circuit.
3. An LED inductance ballast for reducing electromagnetic interference according to claim 1, wherein: the trend of the anti-magnetic interference panel (40) can be set to be linear, folded and curved, and the anti-magnetic interference panel (40) is also provided with a wire hole which is convenient for a wire to pass through.
4. An LED inductance ballast for reducing electromagnetic interference according to claim 1, wherein: the filtering signal loop (20) comprises an input port, an output port, a common mode filter circuit and a surge absorption loop, wherein the output port is connected with the common mode filter circuit, the common mode filter circuit is connected with the surge absorption loop, and the input port is connected with the surge absorption loop.
5. An LED inductance ballast for reducing electromagnetic interference according to claim 1, wherein: the power supply circuit for the relay work on the LED inductance ballast comprises a voltage reduction, rectification, voltage stabilization and filtering circuit, and the direct current voltage output by the voltage reduction, rectification, voltage stabilization and filtering circuit provides power for the relay work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320910735.2U CN220108266U (en) | 2023-04-21 | 2023-04-21 | LED inductance ballast for reducing electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320910735.2U CN220108266U (en) | 2023-04-21 | 2023-04-21 | LED inductance ballast for reducing electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220108266U true CN220108266U (en) | 2023-11-28 |
Family
ID=88843798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320910735.2U Active CN220108266U (en) | 2023-04-21 | 2023-04-21 | LED inductance ballast for reducing electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220108266U (en) |
-
2023
- 2023-04-21 CN CN202320910735.2U patent/CN220108266U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1912488B1 (en) | Control apparatus | |
| JPS62243293A (en) | Radio frequency operation circuit device for low voltage discharge lamp | |
| US8077140B2 (en) | Liquid crystal display device | |
| CN220108266U (en) | LED inductance ballast for reducing electromagnetic interference | |
| JP2008182784A (en) | Power supply circuit | |
| EP1712112B1 (en) | High frequency driver for gas discharge lamp | |
| CN101578921B (en) | Device for restraining electromagnetic interference for high-frequency signal generation device | |
| JPH10107571A (en) | Noise filter | |
| CN111711355A (en) | Switching power supply circuit for inhibiting conduction radiation | |
| CN209472393U (en) | A kind of spaceborne power filter device | |
| US20060158123A1 (en) | Discharge-lamp ballast in particular for a vehicle headlight | |
| JPH11307894A (en) | Printed wiring board | |
| US6055164A (en) | System and method for attenuating induced EMI and power converter employing the same | |
| CN211791262U (en) | Switch power supply DC output electromagnetic interference filter | |
| CN212572383U (en) | Switching power supply circuit for suppressing conduction radiation | |
| EP4040045B1 (en) | Led power supply | |
| CN213586380U (en) | Electronic ballast and circuit board for reducing electromagnetic interference | |
| CN209748878U (en) | Electronic ballast with protection function | |
| JP2003018849A (en) | Power supply device and discharge lamp lighting device | |
| CN213072481U (en) | Integrated bridge rectifier full-chip circuit | |
| CN211352042U (en) | PCB circuit for protecting switching power supply | |
| CN212259381U (en) | LED driving power supply | |
| CN2662594Y (en) | Circuit preventing electromagnetic noise signal | |
| CN216564932U (en) | Filtering structure of controller | |
| CN214069807U (en) | Spread spectrum circuit for suppressing electromagnetic interference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |