CN202334282U

CN202334282U - Passive power filter

Info

Publication number: CN202334282U
Application number: CN2011204638174U
Authority: CN
Inventors: 盛杰; 赵健恺; 李华
Original assignee: Chengdu Bikong Science and Technology Co Ltd
Current assignee: Chengdu Bikong Science and Technology Co Ltd
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2012-07-11
Anticipated expiration: 2021-11-21

Abstract

The utility model discloses a passive power filter comprising input ends and output ends, wherein the input ends comprise a first anode input end, a second anode input end and a cathode input end; the output ends comprise 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, and a second inductor is connected between the cathode input end and the cathode output end; a first capacitor is connected between the first anode output end and the cathode output end, and a second capacitor is connected between the second anode output end and the cathode output end. The passive power filter of the utility model has the advantages of strong compatibility, good barrier property, firm and stable structure, and smooth and beautiful outline.

Description

The passive power source filter

Technical field

The utility model relates to a kind of power-supply filter, relates in particular to the passive power source filter that a kind of isolation is good, structure is firm.

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.The existing power supply 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; 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 passive power source filter that a kind of isolation is good, structure is firm 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 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 with first electric capacity between said first cathode output end and the said cathode output end, be connected with second electric capacity between said second cathode output end and the said cathode output end.

Further, also be connected in parallel to the 3rd electric capacity and the 5th electric capacity between said first cathode output end and the said cathode output end, also be connected in parallel to the 4th electric capacity and the 6th electric capacity between said second cathode output end and the said cathode output end.

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; 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.

As preferably, be that parallel soldering and sealing connects 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, structure is firm, profile is smoothly attractive in appearance, and can avoid extraneous moisture to influence the filtering performance of the utility model.

Description of drawings

Fig. 1 is the front view of the utility model passive power source filter;

Fig. 2 is the left view of the utility model passive power source filter;

Fig. 3 is the internal circuit configuration sketch map of the utility model passive power source filter.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

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 with between the first cathode output end A1 and the cathode output end B1 between first capacitor C, 1, the second cathode output end D1 and the cathode output end B1 and be connected with second capacitor C 2.

As shown in Figure 3, also be connected in parallel between the first cathode output end A1 and the cathode output end B1 between the 3rd capacitor C 3 and the 5th capacitor C 5, the second cathode output end D1 and the cathode output end B1 and also be connected in parallel to the 4th capacitor C 4 and the 6th capacitor C 6.

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.

As depicted in figs. 1 and 2, be that parallel soldering and sealing connects between the upper cover plate 2 of filter and the base 3.Input seat 1 is positioned at the top of upper cover plate 2, and output seat 4 is positioned at the below of base 3.

Claims

1. passive power source filter; Comprise 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 with first electric capacity between said first cathode output end and the said cathode output end, be connected with second electric capacity between said second cathode output end and the said cathode output end.

2. passive power source filter according to claim 1; It is characterized in that: also be connected in parallel to the 3rd electric capacity and the 5th electric capacity between said first cathode output end and the said cathode output end, also be connected in parallel to the 4th electric capacity and the 6th electric capacity between said second cathode output end and the said cathode output end.

3. passive power source filter 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, and the said second subsequent use input is connected with the said second subsequent use output.

4. passive power source filter according to claim 1 is characterized in that: connect for parallel soldering and sealing between the upper cover plate of said filter and the base.