CN201528270U - Adapter of switch power supply - Google Patents
Adapter of switch power supply Download PDFInfo
- Publication number
- CN201528270U CN201528270U CN2009201327833U CN200920132783U CN201528270U CN 201528270 U CN201528270 U CN 201528270U CN 2009201327833 U CN2009201327833 U CN 2009201327833U CN 200920132783 U CN200920132783 U CN 200920132783U CN 201528270 U CN201528270 U CN 201528270U
- Authority
- CN
- China
- Prior art keywords
- switch power
- power supply
- power source
- source adapter
- type filter
- 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 - Fee Related
Links
- 230000005855 radiation Effects 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses an adapter of a switch power supply, which comprises a power radiation source arranged on an internal circuit board, a power output line, a DC output interface and an insulated isolation cover used for sealing the circuit board, and also comprises a metallic shielding layer arranged on the surface of the insulated isolation cover. In the utility model, the problem of EMC in the adapter of the switch power supply is solved effectively.
Description
Technical field
The utility model belongs to the structural design field of switch power source adapter, is specifically related to a kind of EMC technology of switch power source adapter.
Background technology
At present, traditional low-frequency power volume is stupid, and weight is big, and general high frequency switch power (being used in particular for audio frequency and video class power supply) solves because the EMC problem is difficult, thereby influences the audio-video quality of audio frequency and video series products.In order to be applicable to that sound looks series products (Source Music) requirement, design volume is little, lightweight high frequency switch power, but therefore can the tonequality of broadcast receiver product be impacted.
So, must solve the EMC influence of high frequency switch power from radiation or/and conduct two approach to the radio-like product.
The utility model content
In view of the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of switch power source adapter, and it can efficiently solve the EMC problem in the switch power source adapter.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of switch power source adapter that the utility model provides, comprise: be arranged on the power supply radiation source on the internal circuit board, power supply output line, DC output interface, and the insulation isolation lid that is used to seal described circuit board, it also comprises: be arranged on the metal screen layer of described insulation every cap surface.
Described switch power source adapter wherein, is provided with pi type filter at the outlet side of described power supply radiation source.
Described switch power source adapter, wherein, described pi type filter is between described power supply radiation source output and described power supply output line.
Described switch power source adapter, wherein, described pi type filter is between described power supply output line and described DC output interface.
Described switch power source adapter, wherein, described metal screen layer adopts full-closed structure or semi-enclosed structure.
Described switch power source adapter, wherein, described pi type filter comprises RC-pi type filter, LC-pi type filter.
Described switch power source adapter, wherein, the material of described metal screen layer is aluminium, copper or iron.
Described switch power source adapter, wherein, the thickness of described metal screen layer 0.2 millimeter with 0.5 millimeter closed interval in select.
Little in order to overcome volume, lightweight high frequency switch power is to the tonequality influence of broadcast receiver product, the new commute of this practicality produces the radiation approach that disturbs and implements effectively shielding, special insulation in the switch power source adapter outside is provided with metal screen layer every cap surface, be used for the radiated interference that effective shielded power supply internal electric source radiation source is produced, so this practicality newly is specially adapted to products such as AM broadcast receiver.
Description of drawings
Fig. 1 is the cutaway view of main part in the switch power source adapter of the present utility model;
Fig. 2 is a kind of annexation schematic diagram that the utility model relates to the pi type filter part;
Fig. 3 is the another kind of annexation schematic diagram that the utility model relates to the pi type filter part.
Embodiment
For making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below with reference to accompanying drawing and give an actual example the utility model is further described.
As depicted in figs. 1 and 2, a kind of switch power source adapter that the utility model provides, comprise: be arranged on the power supply radiation source 100 on the internal circuit board 130, power supply output line 200, DC output interface 400, the insulation that is used to seal described circuit board 130 is isolated and cover 110, and is arranged on described insulation every the metal screen layer 120 that covers 110 surfaces.
Above-mentioned metal screen layer 120 can select to adopt full-enclosed structure, perhaps semi-enclosed structure according to the requirement of the use amount of needed characteristic of adapter and material; The material of metal screen layer 120 is materials that aluminium, copper or iron or the like can be used for shielding interference; And the thickness of metal screen layer 120 can be according to the needed characteristic of adapter, 0.2 millimeter with 0.5 millimeter closed interval in select, such as 0.2t, 0.3t, 0.35t, 0.4t, 0.5t (1t=1 millimeter).In switch power source adapter, increase the purpose of metal screen layer 120 among this embodiment, it is the interference source that easily produces radiation for insulating power supply inside, solve the EMC influence of high frequency switch power from the radiation approach, thereby improve the tonequality of Source Music series products the radio-like product.
On the basis of the foregoing description, also the outlet side at power supply radiation source 100 is provided with pi type filter, such as RC-pi type filter, LC-pi type filter or the like.This pi type filter can have following dual mode in concrete position of implementing: the first, and as shown in Figure 3, pi type filter 300 is between power supply radiation source 100 outputs and power supply output line 200; The second, as shown in Figure 2, pi type filter 300 is between power supply output line 200 and DC output interface 400.Present embodiment increases the purpose of pi type filter at the outlet side of power supply radiation source 100, be for suppress or the erasure signal transmission line in interference signal, solve the EMC influence of high frequency switch power from pathway to the radio-like product.
In sum, the utility model suppresses by isolating with circuit, and promptly the interference source that power supply inside is easily produced radiation adopts effective metallic shield and corresponding insulation isolation; Partly adopt effective and efficient manner (filtering of π type) that interference signal is suppressed or elimination to output line, thereby power supply radiation and conducted interference are controlled to below the 30dB.In the switch power source adapter of EMC design that the utility model adopted applicable to all volumes.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of the utility model claims; Protection range of the present utility model is as the criterion with appended patent claims.
Claims (9)
1. a switch power source adapter comprises: be arranged on the power supply radiation source on the internal circuit board, power supply output line, the DC output interface, and the insulation isolation lid that is used to seal described circuit board, it is characterized in that, also comprise: be arranged on the metal screen layer of described insulation every cap surface.
2. switch power source adapter as claimed in claim 1 is characterized in that, is provided with pi type filter at the outlet side of described power supply radiation source.
3. switch power source adapter as claimed in claim 2 is characterized in that, described pi type filter is between described power supply radiation source output and described power supply output line.
4. switch power source adapter as claimed in claim 2 is characterized in that, described pi type filter is between described power supply output line and described DC output interface.
5. switch power source adapter as claimed in claim 1 is characterized in that, described metal screen layer adopts full-closed structure.
6. switch power source adapter as claimed in claim 1 is characterized in that, described metal screen layer adopts semi-closed structure.
7. switch power source adapter as claimed in claim 2 is characterized in that, described pi type filter comprises RC-pi type filter, LC-pi type filter.
8. as the described switch power source adapter of arbitrary claim in the claim 1 to 7, it is characterized in that the material of described metal screen layer is aluminium, copper or iron.
9. as the described switch power source adapter of arbitrary claim in the claim 1 to 7, it is characterized in that, the thickness of described metal screen layer 0.2 millimeter with 0.5 millimeter closed interval in select.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201327833U CN201528270U (en) | 2009-06-12 | 2009-06-12 | Adapter of switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201327833U CN201528270U (en) | 2009-06-12 | 2009-06-12 | Adapter of switch power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201528270U true CN201528270U (en) | 2010-07-14 |
Family
ID=42519552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201327833U Expired - Fee Related CN201528270U (en) | 2009-06-12 | 2009-06-12 | Adapter of switch power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201528270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780405A (en) * | 2012-08-15 | 2012-11-14 | 陈才华 | Power adapter capable of suppressing electromagnetic interference |
| CN108100190A (en) * | 2017-11-10 | 2018-06-01 | 北京臻迪科技股份有限公司 | The machine system and underwater robot of underwater robot |
-
2009
- 2009-06-12 CN CN2009201327833U patent/CN201528270U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780405A (en) * | 2012-08-15 | 2012-11-14 | 陈才华 | Power adapter capable of suppressing electromagnetic interference |
| CN108100190A (en) * | 2017-11-10 | 2018-06-01 | 北京臻迪科技股份有限公司 | The machine system and underwater robot of underwater robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN JINGQUANHUA TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN JINGQUANHUA ELECTRONICS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong province Shenzhen City Guanlan town library pit Jingquan Industrial Park Patentee after: Shenzhen JingQuanHua Electronics Co., Ltd. Address before: 518000 Guangdong province Shenzhen City Guanlan town library pit Jingquan Industrial Park Patentee before: Shenzhen Jingquanhua Electronics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20180612 |