CN203261411U - Double-branch end branching device circuit - Google Patents
Double-branch end branching device circuit Download PDFInfo
- Publication number
- CN203261411U CN203261411U CN 201320293668 CN201320293668U CN203261411U CN 203261411 U CN203261411 U CN 203261411U CN 201320293668 CN201320293668 CN 201320293668 CN 201320293668 U CN201320293668 U CN 201320293668U CN 203261411 U CN203261411 U CN 203261411U
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- CN
- China
- Prior art keywords
- inductance
- electric capacity
- capacitor
- branch end
- branching device
- 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
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- Filters And Equalizers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a double-branch end branching device circuit. The double-branch end branching device circuit is composed of a transformer, a first inductor, a second inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a resistor, wherein the transformer comprises a third inductor and a fourth inductor. The double-branch end branching device circuit of the utility model can improve the filtering ability of a branching device; and the capacitor arranged at a grounding end of the branching device circuit can filter clutter brought by surrounding environment.
Description
Technical field
The utility model includes the cable TV system equipment technical field, particularly the splitter circuit of a kind of pair of branch end.
Background technology
The multiple-limb end splitter circuit of prior art is in order to save cost, its output and input uneasiness load the electric capacity of filter action, cause the filter effect of splitter poor, and the direct ground connection of its transformer portion, when causing multiple-limb device circuit to have around clutter to exist, be vulnerable to the interference of these clutters.
The utility model content
The technical problem that (one) will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of splitter circuit of two branch end.
(2) technical scheme
For achieving the above object, the splitter circuit of of the present utility model pair of branch end, by transformer, the first inductance, the second inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and resistance form, described transformer comprises the 3rd inductance and the 4th inductance, described the first electric capacity of series connection between described the 4th inductance one end and the input, described the 4th inductance other end ground connection, described the 3rd inductance one end described the 3rd electric capacity of connecting with the first branch end, described the 4th electric capacity of connecting between described the 3rd inductance other end and the second branch end, described the first inductance one end connects an end of described the 3rd inductance, described the second inductance one end connects the other end of described the 3rd inductance, connect described resistance between the described first inductance other end and the described second inductance other end, after being connected in the middle of described the 3rd inductance and in the middle of described the 4th inductance with ground wire between described the second electric capacity of connecting.
Further, the capacitance of described the second electric capacity is 1PF.
Further, described the 3rd electric capacity is identical with the capacitance of described the 4th electric capacity.
(3) beneficial effect
Compared with prior art, the technical solution of the utility model has the following advantages: be provided with filter capacitor at output, input, make signal more stable, simultaneously, also be provided with electric capacity at its transformer grounding end, play the effect of filtering clutter.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of the splitter circuit of the two branch end of the utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the splitter circuit of of the present utility model pair of branch end, by transformer T1, the first inductance L 1, the second inductance L 2, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4 and resistance R 1 form, described transformer T1 comprises the 3rd inductance L 3 and the 4th inductance L 4, described the first capacitor C 1 of series connection between described the 4th inductance L 4 one ends and the input, described the 4th inductance L 4 other end ground connection, described the 3rd inductance L 3 one ends described the 3rd capacitor C 3 of connecting with the first branch end, described the 4th capacitor C 4 of connecting between described the 3rd inductance L 3 other ends and the second branch end, described the first inductance L 1 one ends connect an end of described the 3rd inductance L 3, described the second inductance L 2 one ends connect the other end of described the 3rd inductance L 3, connect described resistance R 1 between described the first inductance L 1 other end and described the second inductance L 2 other ends, after being connected in the middle of described the 3rd inductance L 3 and in the middle of described the 4th inductance L 4 with ground wire between described the second capacitor C 2 of connecting.
The capacitance of described the second capacitor C 2 is 1PF, is used for filtering the clutter that surrounding environment is brought.
Described the 3rd capacitor C 3 is identical with the capacitance of described the 4th capacitor C 4, makes the first output possess identical filter effect with the second output, guarantees that the signal of two outputs is consistent.
The splitter circuit of of the present utility model pair of branch end has overcome the multiple-limb end splitter circuit filtering weak effect of prior art, the defective that the while earth terminal can not filter clutter, play the electric capacity of filter action input, output and ground being provided with, Effective Raise the splitter antijamming capability.
In sum, above-mentioned execution mode is not to be restricted execution mode of the present utility model, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present utility model or equivalent deformation are all at technology category of the present utility model.
Claims (3)
1. the splitter circuit of two branch end, it is characterized in that: by transformer, the first inductance, the second inductance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and resistance form, described transformer comprises the 3rd inductance and the 4th inductance, described the first electric capacity of series connection between described the 4th inductance one end and the input, described the 4th inductance other end ground connection, described the 3rd inductance one end described the 3rd electric capacity of connecting with the first branch end, described the 4th electric capacity of connecting between described the 3rd inductance other end and the second branch end, described the first inductance one end connects an end of described the 3rd inductance, described the second inductance one end connects the other end of described the 3rd inductance, connect described resistance between the described first inductance other end and the described second inductance other end, after being connected in the middle of described the 3rd inductance and in the middle of described the 4th inductance with ground wire between described the second electric capacity of connecting.
2. the splitter circuit of as claimed in claim 1 pair of branch end, it is characterized in that: the capacitance of described the second electric capacity is 1PF.
3. the splitter circuit of as claimed in claim 1 pair of branch end, it is characterized in that: described the 3rd electric capacity is identical with the capacitance of described the 4th electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293668 CN203261411U (en) | 2013-05-24 | 2013-05-24 | Double-branch end branching device circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293668 CN203261411U (en) | 2013-05-24 | 2013-05-24 | Double-branch end branching device circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261411U true CN203261411U (en) | 2013-10-30 |
Family
ID=49473941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320293668 Expired - Fee Related CN203261411U (en) | 2013-05-24 | 2013-05-24 | Double-branch end branching device circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203261411U (en) |
-
2013
- 2013-05-24 CN CN 201320293668 patent/CN203261411U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20200524 |