CN204231307U - A kind of filter circuit of compatible overcurrent - Google Patents
A kind of filter circuit of compatible overcurrent Download PDFInfo
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- CN204231307U CN204231307U CN201420629816.6U CN201420629816U CN204231307U CN 204231307 U CN204231307 U CN 204231307U CN 201420629816 U CN201420629816 U CN 201420629816U CN 204231307 U CN204231307 U CN 204231307U
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- overcurrent
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Abstract
The utility model discloses a kind of filter circuit of compatible overcurrent, relate to the application of overcurrent and filter circuit.It comprises input port, low pass circuit, high pass circuit and Hybrid port.Described low pass circuit is crossed current circuit by low-pass filter circuit and first and is connect and forms; Described high pass circuit is crossed current circuit by high-pass filtering circuit and second and is connect and forms; Described low pass circuit and high pass circuit are attempted by between input port and Hybrid port.The low frequency signal of input port and voltage are by arriving Hybrid port after low pass circuit overcurrent, filtering; The high-frequency signal of input port and voltage are by arriving Hybrid port after high pass circuit overcurrent, filtering.The utility model circuit can realize to the transmission of CATV blended data signal simultaneously, realize under hang with the power supply of source auxiliary equipment.
Description
Technical field
The utility model relates to the application of overcurrent and filter circuit, is specifically related to a kind of filter circuit of compatible overcurrent.
Background technology
Under the promotion of national integration of three networks strategy and bidirectional network reconstruction, most area is all in the bidirectional rebuilding implementing network, in transformation process, some area is because the impact of geogen, and its chain environment badly causes must adding some active auxiliary equipment in transmitting procedure, as amplifier.Just the powerup issue to active auxiliary equipment while realizing transfer of data is created thus.
Utility model content
The purpose of this utility model solves the power supply to active auxiliary equipment after CATV signal blended data signal, and realize the problem of the synchronous transmission of data simultaneously.
In order to solve the problem, the utility model takes following technical scheme:
A filter circuit for compatible overcurrent, it comprises input port, low pass circuit, high pass circuit and Hybrid port.Described low pass circuit is crossed current circuit by low-pass filter circuit and first and is connect and forms; Described high pass circuit is crossed current circuit by high-pass filtering circuit and second and is connect and forms.Described low pass circuit and high pass circuit are attempted by between input port and Hybrid port.The low frequency signal of input port and voltage are by arriving Hybrid port after low pass circuit overcurrent, filtering; The high-frequency signal of input port and voltage are by arriving Hybrid port after high pass circuit overcurrent, filtering.
Further technical scheme is: described input port comprises low pass input port and high pass input mouth; Described low-pass filter circuit and high-pass filtering circuit are realized by a duplexer simultaneously.
Further technical scheme is: described input port also comprises AC input port; Described first crosses current circuit is composed in series by the first choke induction element and the first discharge tube, and second crosses current circuit is composed in series by the second choke induction element and the second discharge tube; Described AC input port is electrically connected with the first discharge tube, the second discharge tube respectively; AC voltage arrives Hybrid port after being directly inputted to the first discharge tube and the second discharge tube by AC input port.
Further technical scheme is: the frequency of the low frequency signal that described low-pass filter circuit passes through is 7.5-65MHZ, and the frequency of the high-frequency signal that high-pass filtering circuit passes through is 87-1000MHZ.
Further technical scheme is: described Hybrid port is electrically connected active auxiliary equipment.
Further technical scheme is: described first choke induction element and the second choke induction element are all choking-windings.
Further technical scheme is: described active auxiliary equipment is amplifier.
The utility model compared with prior art, has following beneficial effect: realize low-pass filtering and high-pass filtering by duplexer simultaneously, reaches the data mixing of radiofrequency signal; Realize the metering function to electric current by choke induction, reach overcurrent protection; The overcurrent protection to alternating voltage is realized by discharge tube; And the utility model circuit achieve simultaneously to the transmission of CATV blended data signal and under hang with the function of supplying power of source auxiliary equipment.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with embodiment of the present utility model, the utility model is further elaborated.
Embodiment:
As shown in Figure 1, a kind of filter circuit of compatible overcurrent, it comprises input port 1, low pass circuit, high pass circuit and Hybrid port 6.Low pass circuit is crossed current circuit 3 by low-pass filter circuit 2 and first and is connect and forms; High pass circuit is crossed current circuit 4 by high-pass filtering circuit 5 and second and is connect and forms.Low pass circuit and high pass circuit are attempted by input port 1 and mix between 6 mouthfuls, end.The low frequency signal of input port 1 and voltage are by arriving Hybrid port 6 after low pass circuit overcurrent, filtering; The high-frequency signal of input port 1 and voltage are by arriving Hybrid port 6 after high pass circuit overcurrent, filtering.Input port 1 is for the input of received RF signal and voltage, and Hybrid port 6 exports for the mixing of the mixing and voltage that realize radio frequency signal.
Further, input port 1 comprises low pass input port and high pass input mouth; Low-pass filter circuit 2 and high-pass filtering circuit 5 are realized by a duplexer simultaneously.Low pass input port is crossed current circuit with low-pass filter circuit and first respectively and is electrically connected; High pass input mouth is crossed current circuit with high-pass filtering circuit and second respectively and is electrically connected.
Further, input port 1 also comprises AC input port; First crosses current circuit 3 is composed in series by the first choke induction element and the first discharge tube, and second crosses current circuit 4 is composed in series by the second choke induction element and the second discharge tube.First choke induction element is electrically connected with low pass input port; Second choke induction element is electrically connected with high pass input mouth; AC input port is electrically connected with the first discharge tube, the second discharge tube respectively; AC voltage arrives Hybrid port 6 after being directly inputted to the first discharge tube and the second discharge tube by AC input port.First discharge tube, the second discharge tube play high voltage protective effect respectively.
Further, the frequency of the low frequency signal that above-mentioned low-pass filter circuit 2 passes through is 7.5-65MHZ, and the frequency of the high-frequency signal that high-pass filtering circuit 5 passes through is 87-1000MHZ.
Further, Hybrid port 6 is electrically connected active auxiliary equipment.After radiofrequency signal mixing, outputted in active auxiliary equipment by Hybrid port together with voltage, realize the transmission of blended data signal and the function of supplying power to active auxiliary equipment.
Further, the first choke induction element and the second choke induction element are all choking-windings.
Further, active auxiliary equipment is amplifier.
The circuit of above embodiment can realize following function:
1, realize network filtering ability: when not inputting overcurrent voltage, in radio frequency link, the high-frequency signal of 87-1000MHZ is by high pass port, high-pass filtering circuit 5 filtering; The low frequency signal of 7.5-65MHZ is by low pass port, low-pass filter circuit 2 filtering; Thus realize mixing output, and all achieve the function of network filtering.
2, realize conveyance capacity: when not having signal to input, path input overcurrent voltage, now realizes conveyance capacity by choke induction element, exports at Hybrid port 6, under hang with source device and power and realize conveyance capacity.
3, the filter transmission effect that overcurrent synchronously realizes network signal is realized: at high pass port or low pass port input radio frequency signal and voltage, radiofrequency signal arrives Hybrid port 6 by filtering (high-pass filtering, low-pass filtering), and voltage passes through choke induction element to Hybrid port 6; Or the direct input ac voltage of AC input port, by discharge tube overcurrent protection, is input to Hybrid port 6; Finally exported by Hybrid port 6 again, realize the filter transmission effect that overcurrent function also synchronously realizes network signal.
Be understandable that, the illustrative embodiments that above execution mode is only used to principle of the present utility model is described and adopts, but the utility model is not limited thereto.For those skilled in the art, when not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection range of the present utility model.
Claims (7)
1. a filter circuit for compatible overcurrent, is characterized in that: it comprises input port (1), low pass circuit, high pass circuit and Hybrid port (6); Described low pass circuit is crossed current circuit (3) by low-pass filter circuit (2) and first and is connect and forms; Described high pass circuit is crossed current circuit (4) by high-pass filtering circuit (5) and second and is connect and forms; Described low pass circuit and high pass circuit are attempted by between input port (1) and Hybrid port (6).
2. the filter circuit of compatible overcurrent according to claim 1, is characterized in that: described input port (1) comprises low pass input port and high pass input mouth; Described low-pass filter circuit (2) and high-pass filtering circuit (5) are realized by a duplexer simultaneously; Described low pass input port electrical connection low pass circuit; Described high pass input mouth electrical connection high pass circuit.
3. the filter circuit of compatible overcurrent according to claim 1, is characterized in that: described input port (1) also comprises AC input port; Described first crosses current circuit (3) is composed in series by the first choke induction element and the first discharge tube, and second crosses current circuit (4) is composed in series by the second choke induction element and the second discharge tube; Described AC input port is electrically connected with the first discharge tube, the second discharge tube respectively; AC voltage arrives Hybrid port (6) after being directly inputted to the first discharge tube and the second discharge tube by AC input port.
4. the filter circuit of the compatible overcurrent according to any one of claim 1-3, it is characterized in that: the frequency of the low frequency signal that described low-pass filter circuit (2) passes through is 7.5-65MHZ, the frequency of the high-frequency signal that described high-pass filtering circuit (5) passes through is 87-1000MHZ.
5. the filter circuit of the compatible overcurrent according to any one of claim 1-3, is characterized in that: Hybrid port (6) is electrically connected active auxiliary equipment.
6. the filter circuit of compatible overcurrent according to claim 3, is characterized in that: described first choke induction element and the second choke induction element are all choking-windings.
7. the filter circuit of compatible overcurrent according to claim 5, is characterized in that: described active auxiliary equipment is amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629816.6U CN204231307U (en) | 2014-10-27 | 2014-10-27 | A kind of filter circuit of compatible overcurrent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629816.6U CN204231307U (en) | 2014-10-27 | 2014-10-27 | A kind of filter circuit of compatible overcurrent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204231307U true CN204231307U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420629816.6U Active CN204231307U (en) | 2014-10-27 | 2014-10-27 | A kind of filter circuit of compatible overcurrent |
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| CN (1) | CN204231307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011309A (en) * | 2019-04-26 | 2019-07-12 | 苏州普雷斯顿智能科技有限公司 | A kind of all band hybrid filter |
-
2014
- 2014-10-27 CN CN201420629816.6U patent/CN204231307U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011309A (en) * | 2019-04-26 | 2019-07-12 | 苏州普雷斯顿智能科技有限公司 | A kind of all band hybrid filter |
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