CN202334287U - Reinforced isolation direct-current power supply filter with small volume - Google Patents
Reinforced isolation direct-current power supply filter with small volume Download PDFInfo
- Publication number
- CN202334287U CN202334287U CN2011204602632U CN201120460263U CN202334287U CN 202334287 U CN202334287 U CN 202334287U CN 2011204602632 U CN2011204602632 U CN 2011204602632U CN 201120460263 U CN201120460263 U CN 201120460263U CN 202334287 U CN202334287 U CN 202334287U
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- output end
- input
- electric capacity
- subsequent use
- cathode output
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Abstract
The utility model discloses a reinforced isolation direct-current power supply filter with small volume, which comprises an input end and an output end, wherein the input end comprises a first anode input end, a second anode input end and a cathode input end; the output end comprises a first anode output end, a second anode output end and a cathode output end; a first inductor is connected between the first anode input end and the first anode output end; a third inductor is connected between the second anode input end and the second anode output end; a second inductor is connected between the cathode input end and the cathode output end; a first capacitor, a third capacitor, a fifth capacitor and a seventh capacitor are connected between the first anode output end and the cathode output end in parallel; and a second capacitor, a fourth capacitor, a sixth capacitor and an eighth capacitor are connected between the second anode output end and the cathode output end in parallel. The reinforced isolation direct-current power supply filter with small volume disclosed by the utility model has the advantages of being strong in compatibility, good in isolation and steady in structure and is also more attractive in appearance.
Description
Technical field
The utility model relates to a kind of DC wave filter, relates in particular to the reinforcing that a kind of compatibility is strong, isolation good, structure is firm and isolates the small size DC wave filter.
Background technology
Power-supply filter; Have another name called " power supply electromagnetic interface filter "; Or " EMI power-supply filter ", be a kind of passive bidirectional network, be a kind of electric equipment that the frequency or the frequency beyond this frequency of CF in the power supply are 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, and it is not enough to cause inserting loss, and Electro Magnetic Compatibility is not high, isolation is good inadequately, and volume is bigger than normal; In addition, the existing power supply filter generally is connected cover plate through screw with filter, and this connection makes its structure built on the sand, can not realize sealing fully, and profile is also because of there being screw to seem attractive in appearance inadequately.
Summary of the invention
The purpose of the utility model provides the reinforcing that a kind of compatibility is strong, isolation good, structure is firm to isolate the small size DC wave filter with regard to being in order to address the above problem.
The utility model is realized above-mentioned purpose through following technical scheme:
The utility model comprises interconnective upper cover plate, base, input seat, output seat, input and output; Said input comprises first electrode input end, second electrode input end and negative input; Said output comprises first cathode output end, second cathode output end and cathode output end; Be connected with first inductance between said first electrode input end and said first cathode output end; Be connected with the 3rd inductance between said second electrode input end and said second cathode output end, be connected with second inductance between said negative input and the said cathode output end; Be connected in parallel to first electric capacity, the 3rd electric capacity, the 5th electric capacity and the 7th electric capacity between said first cathode output end and the said cathode output end, be connected in parallel to second electric capacity, the 4th electric capacity, the 6th electric capacity and the 8th electric capacity between said second cathode output end and the said cathode output end.
Further, said first cathode output end is connected back ground connection with the 9th electric capacity, and said cathode output end is connected back ground connection with the tenth electric capacity, and said second cathode output end is connected back ground connection with the 11 electric capacity.
Further; Said input also comprises the first subsequent use input and the second subsequent use input; Said output also comprises the first subsequent use output and the second subsequent use output, and the said first subsequent use input is connected with the said first subsequent use output, and the said second subsequent use input is connected with the said second subsequent use output; The said first subsequent use output connects ground connection behind the 12 electric capacity, and the said second subsequent use output connects ground connection behind the 13 electric capacity.
As preferably, adopt parallel soldering and sealing to connect between the upper cover plate of said filter and the base.
The beneficial effect of the utility model is:
The utility model is compatible by force, isolation is good, and small and light; Adopt parallel soldering and sealing to make the utility model structure more firm, realized sealing fully, profile is also more level and smooth, attractive in appearance.
Description of drawings
Fig. 1 is that the utility model is reinforced the front view of isolating the small size DC wave filter;
Fig. 2 is that the utility model is reinforced the vertical view of isolating the small size DC wave filter;
Fig. 3 is that the utility model is reinforced the internal circuit configuration sketch map of isolating the small size DC wave filter.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As depicted in figs. 1 and 2, adopt parallel soldering and sealing to connect between the upper cover plate 2 of filter and the base 3.Input seat 1 is arranged at the top of upper cover plate 2, and output seat 4 is arranged at the below of base 3.
As shown in Figure 3; The input of the 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 with between first inductance L, 1, the second electrode input end D and the second cathode output end D1 between the first electrode input end A and the first cathode output end A1 and be connected with the 3rd inductance L 3, be connected with second inductance L 2 between negative input B and the cathode output end B1; Be connected in parallel between the first cathode output end A1 and the cathode output end B1 and be connected in parallel to second capacitor C 2, the 4th capacitor C 4, the 6th capacitor C 6 and the 8th capacitor C 8 between first capacitor C 1, the 3rd capacitor C 3, the 5th capacitor C 5 and the 7th capacitor C 7, the second cathode output end D1 and the cathode output end B1.
As shown in Figure 3, the first cathode output end A1 is connected back ground connection with the 9th capacitor C 9, and cathode output end B1 is connected back ground connection with the tenth capacitor C 10, and the second cathode output end D1 is connected back ground connection with the 11 capacitor C 11.
As shown in Figure 3; Input also comprises the first subsequent use input E and the second subsequent use input F; Output also comprises the first subsequent use output E1 and the second subsequent use output F1, and the first subsequent use input E is connected with the first subsequent use output E1, and the second subsequent use input F is connected with the second subsequent use output F1; The first subsequent use output E1 connects the 12 capacitor C 12 back ground connection, and the second subsequent use output F1 connects the 13 capacitor C 13 back ground connection.
Claims (4)
1. reinforce isolation small size DC wave filter for one kind; Comprise interconnective upper cover plate, base, input seat, output seat, input and output; It is characterized in that: said input comprises first electrode input end, second electrode input end and negative input; Said output comprises first cathode output end, second cathode output end and cathode output end; Be connected with first inductance between said first electrode input end and said first cathode output end, be connected with the 3rd inductance between said second electrode input end and said second cathode output end, be connected with second inductance between said negative input and the said cathode output end; Be connected in parallel to first electric capacity, the 3rd electric capacity, the 5th electric capacity and the 7th electric capacity between said first cathode output end and the said cathode output end, be connected in parallel to second electric capacity, the 4th electric capacity, the 6th electric capacity and the 8th electric capacity between said second cathode output end and the said cathode output end.
2. the small size DC wave filter is isolated in reinforcing according to claim 1; It is characterized in that: said first cathode output end is connected back ground connection with the 9th electric capacity; Said cathode output end is connected back ground connection with the tenth electric capacity, said second cathode output end is connected back ground connection with the 11 electric capacity.
3. the small size DC wave filter is isolated in reinforcing according to claim 1; It is characterized in that: said input also comprises the first subsequent use input and the second subsequent use input; Said output also comprises the first subsequent use output and the second subsequent use output; The said first subsequent use input is connected with the said first subsequent use output; The said second subsequent use input is connected with the said second subsequent use output, and the said first subsequent use output connects ground connection behind the 12 electric capacity, and the said second subsequent use output connects ground connection behind the 13 electric capacity.
4. the small size DC wave filter is isolated in reinforcing according to claim 1, it is characterized in that: adopt parallel soldering and sealing to connect between the upper cover plate of said filter and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204602632U CN202334287U (en) | 2011-11-18 | 2011-11-18 | Reinforced isolation direct-current power supply filter with small volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204602632U CN202334287U (en) | 2011-11-18 | 2011-11-18 | Reinforced isolation direct-current power supply filter with small volume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334287U true CN202334287U (en) | 2012-07-11 |
Family
ID=46446252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204602632U Expired - Fee Related CN202334287U (en) | 2011-11-18 | 2011-11-18 | Reinforced isolation direct-current power supply filter with small volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334287U (en) |
-
2011
- 2011-11-18 CN CN2011204602632U patent/CN202334287U/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: 20120711 Termination date: 20181118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |