CN203225518U - Splitter circuit having functions of filtering and lightning protection - Google Patents
Splitter circuit having functions of filtering and lightning protection Download PDFInfo
- Publication number
- CN203225518U CN203225518U CN 201320291306 CN201320291306U CN203225518U CN 203225518 U CN203225518 U CN 203225518U CN 201320291306 CN201320291306 CN 201320291306 CN 201320291306 U CN201320291306 U CN 201320291306U CN 203225518 U CN203225518 U CN 203225518U
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- inductance
- electric capacity
- filtering
- capacitor
- splitter circuit
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Abstract
The utility model discloses a splitter circuit having functions of filtering and lightning protection. The splitter circuit having the functions of filtering and lightning protection is composed of a first transformer, a second transformer, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a transient voltage restraining diode, wherein the first transformer comprises a first inducer and a second inducer, and the second transformer comprises a third inducer and a fourth inducer. The splitter circuit having the functions of filtering and lightning protection is characterized in that filter capacitors are additionally arranged at an input end, an output end and a branch end, so that the filtering capacity is enhanced; the transient voltage restraining diode is added to the part of the branch end, and the effects of electricity prevention and lightning protection are improved.
Description
Technical field
The utility model includes the cable TV system equipment technical field, particularly a kind of splitter circuit with filtering and anti-lightning strike function.
Background technology
The splitter circuit output end with filtering and anti-lightning strike function of prior art often directly is connected transformer inductance with input, therefore, this splitter filter effect is poor, lacks the anti-electric hand section of lightning protection simultaneously, when causing running into thunder and lightning weather, TV signal will be interfered.
The utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of splitter circuit with filtering and anti-lightning strike function.
(2) technical scheme
For achieving the above object, splitter circuit of the present utility model, by first transformer, second transformer, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity and transient voltage suppress diode and form, described first transformer comprises first inductance and second inductance, described second transformer comprises the 3rd inductance and the 4th inductance, the input of described first inductance described first electric capacity of connecting, output described second electric capacity of connecting, described second inductance, one end and described the 3rd inductance one end common ground, the described second inductance other end connects described the 4th inductance one end, described the 3rd inductance other end connects described first inductance output end, described the 4th electric capacity, described the 5th electric capacity and described the 6th electric capacity parallel connection, and two ends, back in parallel connect an end and the ground wire of described the 4th inductance respectively, be connected described transient voltage between the other end of described the 4th inductance and the ground wire and suppress diode, be connected described the 3rd electric capacity between the other end of described the 4th inductance and the branch end.
Further, described first electric capacity is identical with the capacitance of described second electric capacity.
Further, the capacitance of described the 4th electric capacity, described the 5th electric capacity and described the 6th electric capacity is respectively 0.5PF, 1PF and 1.5PF.
(3) beneficial effect
Compared with prior art, the technical solution of the utility model has the following advantages: increased filter capacity, partly increased transient voltage in branch end and suppressed diode, improved anti-electricity, lightning protection effect.
Description of drawings
Fig. 1 is the circuit theory diagrams that the utlity model has the splitter circuit of filtering and anti-lightning strike function.
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, splitter circuit with filtering and anti-lightning strike function of the present utility model, by the first transformer T1, the second transformer T2, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6 and transient voltage suppress diode D1 and form, the described first transformer T1 comprises first inductance L 1 and second inductance L 2, the described second transformer T2 comprises the 3rd inductance L 3 and the 4th inductance L 4, the input of described first inductance L 1 described first capacitor C 1 of connecting, output described second capacitor C 2 of connecting, described second inductance L, 2 one ends and described the 3rd inductance L 3 one end common grounds, described second inductance L, 2 other ends connect described the 4th inductance L 4 one ends, described the 3rd inductance L 3 other ends connect described first inductance L, 1 output, described the 4th capacitor C 4, described the 5th capacitor C 5 and 6 parallel connections of described the 6th capacitor C, and two ends, back in parallel connect an end and the ground wire of described the 4th inductance L 4 respectively, be connected described transient voltage between the other end of described the 4th inductance L 4 and the ground wire and suppress diode D1, be connected described the 3rd capacitor C 3 between the other end of described the 4th inductance L 4 and the branch end.
Described first capacitor C 1 is identical with the capacitance of described second capacitor C 2, makes output and input possess identical filter effect.
The capacitance of described the 4th capacitor C 4, described the 5th capacitor C 5 and described the 6th capacitor C 6 is respectively 0.5PF, 1PF and 1.5PF, is used for filtering the clutter of the different frequency range of instantaneous generation.
Splitter circuit with filtering and anti-lightning strike function of the present utility model overcomes the splitter circuit filtering of prior art, anti-, the defective of lightning protection effect difference, at input, output, branch end arranges filter capacitor, improve filtering performance, simultaneously, between branch end and ground wire, be provided with transient voltage and suppress diode, when utilizing transient voltage to suppress diode to be subjected to reverse transient state high energy impact events, can be in the extreme time high impedance of its two interpolar be become low-impedance characteristic, the surge power of absorption up to thousands of watts is the effective ways that overcome effects of lightning.
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. splitter circuit with filtering and anti-lightning strike function, it is characterized in that: by first transformer, second transformer, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity and transient voltage suppress diode and form, described first transformer comprises first inductance and second inductance, described second transformer comprises the 3rd inductance and the 4th inductance, the input of described first inductance described first electric capacity of connecting, output described second electric capacity of connecting, described second inductance, one end and described the 3rd inductance one end common ground, the described second inductance other end connects described the 4th inductance one end, described the 3rd inductance other end connects described first inductance output end, described the 4th electric capacity, described the 5th electric capacity and described the 6th electric capacity parallel connection, and two ends, back in parallel connect an end and the ground wire of described the 4th inductance respectively, be connected described transient voltage between the other end of described the 4th inductance and the ground wire and suppress diode, be connected described the 3rd electric capacity between the other end of described the 4th inductance and the branch end.
2. the splitter circuit with filtering and anti-lightning strike function as claimed in claim 1, it is characterized in that: described first electric capacity is identical with the capacitance of described second electric capacity.
3. the splitter circuit with filtering and anti-lightning strike function as claimed in claim 1, it is characterized in that: the capacitance of described the 4th electric capacity, described the 5th electric capacity and described the 6th electric capacity is respectively 0.5PF, 1PF and 1.5PF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320291306 CN203225518U (en) | 2013-05-23 | 2013-05-23 | Splitter circuit having functions of filtering and lightning protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320291306 CN203225518U (en) | 2013-05-23 | 2013-05-23 | Splitter circuit having functions of filtering and lightning protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225518U true CN203225518U (en) | 2013-10-02 |
Family
ID=49252508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320291306 Expired - Fee Related CN203225518U (en) | 2013-05-23 | 2013-05-23 | Splitter circuit having functions of filtering and lightning protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225518U (en) |
-
2013
- 2013-05-23 CN CN 201320291306 patent/CN203225518U/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: 20131002 Termination date: 20200523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |