CN206452293U - Open circuit mode power-supply filter - Google Patents
Open circuit mode power-supply filter Download PDFInfo
- Publication number
- CN206452293U CN206452293U CN201720095583.XU CN201720095583U CN206452293U CN 206452293 U CN206452293 U CN 206452293U CN 201720095583 U CN201720095583 U CN 201720095583U CN 206452293 U CN206452293 U CN 206452293U
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- common mode
- mode
- capacitance
- open circuit
- inductance
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Abstract
The utility model discloses a kind of open circuit mode power-supply filter, including common mode inductance L1, differential mode capacitor C1, common mode capacitance C3, common mode capacitance C4 and fuse F1；The common mode inductance L1 is connected between input and output end；The differential mode capacitor C1 is connected to the input side of the common mode inductance L1 after being connected with the fuse F1；The common mode capacitance C3 is connected to the outlet side of the common mode inductance L1 after being connected with common mode capacitance C4, and the common mode capacitance C3 and common mode capacitance C4 is grounded.This power-supply filter has the mode of operation of more safety and stability, the damage for effectively preventing short circuit from being brought to rear end equipment and wave filter.
Description
Technical field
The utility model is related to wave filter technology field, and in particular to a kind of open circuit mode power-supply filter.
Background technology
It is more and more extensive using power-supply filter with developing rapidly for electromagnetic compatibility industry, it is reliable to power-supply filter
Property require more and more higher, be applied especially to the military fields such as space flight, aviation, weapons, military communication, ship.For power filter
After device short circuit, can rapidly opening a way, it is particularly important not influence rear end to power.Adopted inside current most domestic power-supply filter
Processing is filtered with electric capacity, inductance, does not consider that the open circuit mode after short circuit is designed, causes power-supply filter can not after short circuit
Open circuit is carried out to resume work.
Utility model content
The utility model overcomes the deficiencies in the prior art there is provided a kind of open circuit mode power-supply filter, for solving mesh
Processing is filtered using electric capacity, inductance inside preceding most domestic power-supply filter, does not consider that the open circuit mode after short circuit is set
Meter, when causing system power supply instantaneous short circuit, it is impossible to recovered, cause the secondary upper electricity of product can not normal work the problem of.
In view of the above mentioned problem of prior art, the utility model is used according to disclosed in the utility model on one side
Following technical scheme：
A kind of open circuit mode power-supply filter, including common mode inductance L1, differential mode capacitor C1, common mode capacitance C3, common mode capacitance
C4 and fuse F1；The common mode inductance L1 is connected between input and output end；The differential mode capacitor C1 and the fusing
The input side of the common mode inductance L1 is connected to after device F1 series connection；The common mode capacitance C3 is connected to after being connected with common mode capacitance C4
The outlet side of the common mode inductance L1, and the common mode capacitance C3 and common mode capacitance C4 ground connection.
In order to which the utility model is better achieved, further technical scheme is：
According to an embodiment of the present utility model, the positive pole of the differential mode capacitor C1 and input are connected, described molten
Disconnected device F1 and input negative pole are connected.
According to another embodiment of the present utility model, in addition to differential mode capacitor C2 and fuse F2, the differential mode electricity
Hold the outlet side that the common mode inductance L1 is connected to after C2 and fuse F2 series connection.
According to another embodiment of the present utility model, the differential mode capacitor C2 and common mode inductance L1 outlet side
Positive pole is connected, and the fuse F2 is connected with the outlet side negative pole of the common mode inductance L1.
According to another embodiment of the present utility model, common mode is additionally provided between the common mode inductance L1 and output end
Inductance L2.
According to another embodiment of the present utility model, in addition to differential mode capacitor C5 and fuse F3, the differential mode electricity
Output end is connected to after holding C5 and fuse F3 series connection.
According to another embodiment of the present utility model, the differential mode capacitor C5 is connected with output head anode, described molten
Disconnected device F3 is connected with negative pole of output end.
The utility model can also be：
According to another embodiment of the present utility model, in addition to common mode capacitance C6 and common mode capacitance C7, the common mode
Electric capacity C6 is connected to output end after being connected with common mode capacitance C7, and the common mode capacitance C6 and common mode capacitance C7 is grounded.
Compared with prior art, one of the beneficial effects of the utility model are：
A kind of open circuit mode power-supply filter of the present utility model, increases short circuit protection measures in filter circuit, makes it
Meet product and the requirement for being capable of normal power supply is realized in the case of instantaneous short circuit；More pacify so that power-supply filter has
Stable mode of operation, can effectively prevent the short-circuit damage brought to rear end equipment and wave filter entirely；The utility model can be simultaneously
Airborne and short-circuit self- recoverage requirement of the missile equipment to power-supply filter is met, has compared with prior art and is more widely applied model
Enclose and apparatus adaptability.
Brief description of the drawings
, below will be to embodiment for clearer explanation present specification embodiment or technical scheme of the prior art
Or the accompanying drawing used required in the description of prior art is briefly described, it should be apparent that, drawings in the following description are only
It is the reference to the embodiment of some in present specification, for those skilled in the art, is not paying creative work
In the case of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the surface structure schematic diagram of the open circuit mode power-supply filter according to the utility model one embodiment.
Fig. 2 is the electrical block diagram of the open circuit mode power-supply filter according to the utility model one embodiment.
Embodiment
The utility model is described in further detail with reference to embodiment, but embodiment of the present utility model is not
It is limited to this.
As shown in figure 1, Fig. 1 shows the outward appearance of the open circuit mode power-supply filter according to the utility model one embodiment
P, N input for open circuit mode power-supply filter in structure, Fig. 1, and P', N' export for open circuit mode power-supply filter.The power supply is filtered
The design of ripple device is to be combined filtering with open circuit mode.Filter circuit is connected to by inside by printed board with open-circuit-protection device
Together, input, export finally by high temperature wire.The characteristics of power-supply filter is designed：In power filter processing simultaneously, increase
Open circuit mode device, is impacted after preventing wave filter short circuit to rear end, and in the secondary power supply of power-supply filter, it is ensured that work
Make normal.
As shown in Fig. 2 Fig. 2 shows the circuit of the open circuit mode power-supply filter according to the utility model one embodiment
Structure, a kind of open circuit mode power-supply filter, including common mode inductance L1, L2, differential mode capacitor C1, C2, C5, common mode capacitance C3, C4,
C6, C7, fuse F1, F2, F3；The common mode inductance L1 is connected between input and output end；The differential mode capacitor C1 with
The input side of the common mode inductance L1 is connected to after the fuse F1 series connection；The common mode capacitance C3 connects with common mode capacitance C4
The outlet side of the common mode inductance L1 is connected to afterwards, and the common mode capacitance C3 and common mode capacitance C4 is grounded.The differential mode
The positive pole connection of electric capacity C1 and input, the negative pole connection of the fuse F1 and input.The differential mode capacitor C2 and fusing
The outlet side of the common mode inductance L1 is connected to after device F2 series connection.The differential mode capacitor C2 and common mode inductance L1 outlet side
Positive pole is connected, and the fuse F2 is connected with the outlet side negative pole of the common mode inductance L1.The common mode inductance L1 and output end
Between be additionally provided with common mode inductance L2.Output end is connected to after differential mode capacitor C5 and fuse the F3 series connection.The differential mode electricity
Hold C5 to be connected with output head anode, the fuse F3 is connected with negative pole of output end.The common mode capacitance C6 and common mode capacitance C7
Output end is connected to after series connection, and the common mode capacitance C6 and common mode capacitance C7 is grounded.
Above structure constitutes two stage filter circuit by common mode inductance, common mode capacitance, differential mode capacitor and open circuit fuse, altogether
Mould inductance L1, L2 common mode capacitance C3, C4, C6, C7 filter out the common mode disturbances on input power line；Differential mode capacitor C1, C2, C5 are filtered
Except the DM EMI on input power line；Fuse F1, F2, F3 carry out short-circuit protection, when short-circuit between P and N, line line it
Between immediate current become big, electric capacity C1, C2, C5 can because electric current exceedes maximum puncture short, now fuse F1, F2, F3 because
Electric current constantly increases, and is opened a way beyond load current value, it is ensured that other devices are without damage inside power-supply filter.Meanwhile,
In secondary power supply, normal work ensure that.
Power-supply filter of the present utility model, integrates EMI filter functions and open circuit mode, it is met after short circuit certainly
Recover to require.The content of the utility model development meets national industrial policies, and the product of development belongs to the product of new and high technology, can used
In to the high airborne equipment of reliability requirement, missile equipment etc..
The embodiment of each in this specification is described by the way of progressive, what each embodiment was stressed be with it is other
Identical similar portion cross-reference between the difference of embodiment, each embodiment.
" one embodiment ", " another embodiment ", " embodiment " for being spoken of in this manual, etc., refer to knot
Specific features, structure or the feature for closing embodiment description are included at least one embodiment of the application generality description
In.It is not necessarily to refer to same embodiment that statement of the same race, which occur, in multiple places in the description.Appoint furthermore, it is understood that combining
When one embodiment describes a specific features, structure or feature, what is advocated is this to realize with reference to other embodiment
Feature, structure or feature also fall in the range of the utility model.
Although reference be made herein to the utility model is described multiple explanatory embodiments of the present utility model, still,
It should be understood that those skilled in the art can be designed that a lot of other modification and embodiment, these modifications and embodiment
It will fall within spirit disclosed in the present application and spirit.More specifically, in disclosure and the scope of claim
It is interior, a variety of variations and modifications can be carried out to the building block and/or layout of theme composite configuration.Except to building block and/
Or outside the variations and modifications of layout progress, to those skilled in the art, other purposes also will be apparent.
Claims (8)
1. a kind of open circuit mode power-supply filter, it is characterised in that including common mode inductance L1, differential mode capacitor C1, common mode capacitance C3,
Common mode capacitance C4 and fuse F1；The common mode inductance L1 is connected between input and output end；The differential mode capacitor C1 with
The input side of the common mode inductance L1 is connected to after the fuse F1 series connection；The common mode capacitance C3 connects with common mode capacitance C4
The outlet side of the common mode inductance L1 is connected to afterwards, and the common mode capacitance C3 and common mode capacitance C4 is grounded.
2. open circuit mode power-supply filter according to claim 1, it is characterised in that the differential mode capacitor C1 and input
Positive pole connection, the fuse F1 and input negative pole connection.
3. open circuit mode power-supply filter according to claim 1, it is characterised in that also including differential mode capacitor C2 and fusing
Device F2, is connected to the outlet side of the common mode inductance L1 after differential mode capacitor C2 and fuse the F2 series connection.
4. open circuit mode power-supply filter according to claim 3, it is characterised in that the differential mode capacitor C2 with it is described common
Mould inductance L1 outlet side positive pole connection, the fuse F2 is connected with the outlet side negative pole of the common mode inductance L1.
5. open circuit mode power-supply filter according to claim 1, it is characterised in that the common mode inductance L1 and output end
Between be additionally provided with common mode inductance L2.
6. open circuit mode power-supply filter according to claim 5, it is characterised in that also including differential mode capacitor C5 and fusing
Device F3, output end is connected to after differential mode capacitor C5 and fuse the F3 series connection.
7. open circuit mode power-supply filter according to claim 6, it is characterised in that the differential mode capacitor C5 and output end
Positive pole is connected, and the fuse F3 is connected with negative pole of output end.
8. open circuit mode power-supply filter according to claim 5, it is characterised in that also including common mode capacitance C6 and common mode
Electric capacity C7, the common mode capacitance C6 are connected to output end after being connected with common mode capacitance C7, and the common mode capacitance C6 with it is described common
Mould electric capacity C7 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720095583.XU CN206452293U (en) | 2017-01-24 | 2017-01-24 | Open circuit mode power-supply filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720095583.XU CN206452293U (en) | 2017-01-24 | 2017-01-24 | Open circuit mode power-supply filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206452293U true CN206452293U (en) | 2017-08-29 |
Family
ID=59668181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720095583.XU Active CN206452293U (en) | 2017-01-24 | 2017-01-24 | Open circuit mode power-supply filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206452293U (en) |
-
2017
- 2017-01-24 CN CN201720095583.XU patent/CN206452293U/en active Active
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