CN202889181U - Compatible isolation DC (Direct Current) source filter with small volume - Google Patents
Compatible isolation DC (Direct Current) source filter with small volume Download PDFInfo
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- CN202889181U CN202889181U CN2011204645939U CN201120464593U CN202889181U CN 202889181 U CN202889181 U CN 202889181U CN 2011204645939 U CN2011204645939 U CN 2011204645939U CN 201120464593 U CN201120464593 U CN 201120464593U CN 202889181 U CN202889181 U CN 202889181U
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- inductance
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- cathode output
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Abstract
The utility model discloses a compatible isolation DC source filter with a small volume, which comprises a filter body, input ends and output ends. A first inductor and a fourth inductor are serially connected between the first anode input end and the first anode output end. A third inductor and a sixth inductor are serially connected between the second anode input end and the second anode output end. A second inductor and a fifth inductor are serially connected between the cathode input end and the cathode output end. A first capacitor is connected between one first inductor end adjacent to the fourth inductor and one second inductor end adjacent to the fifth inductor. A second capacitor is connected between one third inductor end adjacent to the sixth inductor and one second inductor end adjacent to the fifth inductor. One fourth inductor end adjacent to the first inductor is connected with the third capacitor and then grounded. One fifth inductor end adjacent to the second inductor is connected with the fourth capacitor and then grounded. One sixth inductor end adjacent to the third inductor is connected with the fourth capacitor and then grounded. The filter provided by the utility model has the advantages of strong compatibility, good isolation performances, small volume and lightness.
Description
Technical field
The utility model relates to a kind of DC wave filter, relates in particular to that a kind of compatibility is strong, isolation good and the compatible isolated DC power-supply filter of the small size of small and light.
Background technology
Power-supply filter, have another name called " EMI power filter ", or " EMI power-supply filter ", it is a kind of passive bidirectional network, it is the electric equipment that the frequency beyond a kind of frequency to characteristic frequency in the power supply or this frequency is carried out effective filtering, its end is to connect power supply, and the other end is to connect load.Existing DC wave filter is because the impedance matching of its inner filter network is bad, causes that Electro Magnetic Compatibility is not high, isolation is relatively poor; In addition, the existing power supply filter makes the overall filter volume larger because inner member is more, and quality is heavier, is unfavorable for carrying and using of filter.
Summary of the invention
A kind of compatibility is strong, isolation good and the compatible isolated DC power-supply filter of the small size of small and light with regard to being to provide in order to address the above problem for the purpose of this utility model.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises the filter body, input and output, described input comprises the first electrode input end, the second electrode input end and negative input, described output comprises the first cathode output end, the second cathode output end and cathode output end, be connected in series with the first inductance and the 4th inductance between described the first electrode input end and described the first cathode output end, be connected in series with the 3rd inductance and the 6th inductance between described the second electrode input end and described the second cathode output end, be connected in series with the second inductance and the 5th inductance between described negative input and the described cathode output end; Described the first inductance is connected with the first electric capacity near an end and described second inductance of described the 4th inductance near between the end of described the 5th inductance, and described the 3rd inductance is connected with the second electric capacity near an end and described second inductance of described the 6th inductance near between the end of described the 5th inductance; Described the 4th inductance is connected rear ground connection near an end of described the first inductance with the 3rd electric capacity, described the 5th inductance is connected rear ground connection near an end of described the second inductance with the 4th electric capacity, described the 6th inductance is connected rear ground connection near an end of described the 3rd inductance with the 4th electric capacity.
Further, ground connection after described the first cathode output end is connected with the 6th electric capacity, ground connection after described cathode output end is connected with the 7th electric capacity, ground connection after described the second cathode output end is connected with the 8th electric capacity.
As preferably, described the 4th inductance, described the 5th inductance and described the 6th inductance share a magnetic core.
Further, the input of described filter and output place respectively on the forward and backward side of described filter body; Lug-mounted on the described filter body is arranged at the middle part of the arranged on left and right sides of described filter body, and the installing hole of described lug-mounted is oval installing hole.
The beneficial effects of the utility model are:
The utility model is by optimizing internal network, simplifying element, make its compatible strong, isolation is good and small and light, and is easy to carry and use.
Description of drawings
Fig. 1 is the front view of the compatible isolated DC power-supply filter of the utility model small size;
Fig. 2 is the vertical view of the compatible isolated DC power-supply filter of the utility model small size;
Fig. 3 is the internal circuit configuration schematic diagram of the compatible isolated DC power-supply filter of the utility model small size.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 3, input of the present utility model comprises the first electrode input end A, the second electrode input end D and negative input B, output comprises the first cathode output end A1, the second cathode output end D1 and cathode output end B1, be connected in series with the first inductance L 1 and the 4th inductance L 4 between the first electrode input end A and the first cathode output end A1, be connected in series with the 3rd inductance L 3 and the 6th inductance L 6 between the second electrode input end D and the second cathode output end D1, be connected in series with the second inductance L 2 and the 5th inductance L 5 between negative input B and the cathode output end B1; The first inductance L 1 is connected with second capacitor C 2 near being connected with an end and second inductance L 2 of the first capacitor C 1, the three inductance L 3 near the 6th inductance L 6 between the end of the 5th inductance L 5 near between the end of the 5th inductance L 5 near an end and second inductance L 2 of the 4th inductance L 4; The 4th inductance L 4 is connected rear ground connection near an end of the first inductance L 1 with the 3rd capacitor C 3, the 5th inductance L 5 is connected rear ground connection near an end of the second inductance L 2 with the 4th capacitor C 4, the 6th inductance L 6 is connected rear ground connection near an end of the 3rd inductance L 3 with the 4th electric capacity L4.
As shown in Figure 3, ground connection after the first cathode output end A1 is connected with the 6th capacitor C 6, ground connection after cathode output end B1 is connected with the 7th capacitor C 7, ground connection after the second cathode output end D1 is connected with the 8th capacitor C 8.
As shown in Figure 3, the 4th inductance L 4, the 5th inductance L 5 and the 6th inductance L 60 share a magnetic core.
As depicted in figs. 1 and 2, the input 4 of filter and output 2 place respectively on the forward and backward side of filter body 1; Lug-mounted 3 on the filter body 1 is arranged at the middle part of the arranged on left and right sides of filter body 1, and the installing hole of described lug-mounted 3 is oval installing hole.
Claims (5)
1. the compatible isolated DC power-supply filter of a small size, comprise the filter body, input and output, it is characterized in that: described input comprises the first electrode input end, the second electrode input end and negative input, described output comprises the first cathode output end, the second cathode output end and cathode output end, be connected in series with the first inductance and the 4th inductance between described the first electrode input end and described the first cathode output end, be connected in series with the 3rd inductance and the 6th inductance between described the second electrode input end and described the second cathode output end, be connected in series with the second inductance and the 5th inductance between described negative input and the described cathode output end; Described the first inductance is connected with the first electric capacity near an end and described second inductance of described the 4th inductance near between the end of described the 5th inductance, and described the 3rd inductance is connected with the second electric capacity near an end and described second inductance of described the 6th inductance near between the end of described the 5th inductance; Described the 4th inductance is connected rear ground connection near an end of described the first inductance with the 3rd electric capacity, described the 5th inductance is connected rear ground connection near an end of described the second inductance with the 4th electric capacity, described the 6th inductance is connected rear ground connection near an end of described the 3rd inductance with the 4th electric capacity.
2. the compatible isolated DC power-supply filter of small size according to claim 1, it is characterized in that: ground connection after described the first cathode output end is connected with the 6th electric capacity, ground connection after ground connection after described cathode output end is connected with the 7th electric capacity, described the second cathode output end are connected with the 8th electric capacity.
3. the compatible isolated DC power-supply filter of small size according to claim 1, it is characterized in that: described the 4th inductance, described the 5th inductance and described the 6th inductance share a magnetic core.
4. the compatible isolated DC power-supply filter of small size according to claim 1, it is characterized in that: the input of described filter and output place respectively on the forward and backward side of described filter body.
5. the compatible isolated DC power-supply filter of small size according to claim 1, it is characterized in that: the lug-mounted on the described filter body is arranged at the middle part of the arranged on left and right sides of described filter body, and the installing hole of described lug-mounted is oval installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204645939U CN202889181U (en) | 2011-11-21 | 2011-11-21 | Compatible isolation DC (Direct Current) source filter with small volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204645939U CN202889181U (en) | 2011-11-21 | 2011-11-21 | Compatible isolation DC (Direct Current) source filter with small volume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889181U true CN202889181U (en) | 2013-04-17 |
Family
ID=48080568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204645939U Expired - Fee Related CN202889181U (en) | 2011-11-21 | 2011-11-21 | Compatible isolation DC (Direct Current) source filter with small volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889181U (en) |
-
2011
- 2011-11-21 CN CN2011204645939U patent/CN202889181U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20181121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |