CN203086591U - A novel isolating tuner - Google Patents
A novel isolating tuner Download PDFInfo
- Publication number
- CN203086591U CN203086591U CN 201320020540 CN201320020540U CN203086591U CN 203086591 U CN203086591 U CN 203086591U CN 201320020540 CN201320020540 CN 201320020540 CN 201320020540 U CN201320020540 U CN 201320020540U CN 203086591 U CN203086591 U CN 203086591U
- Authority
- CN
- China
- Prior art keywords
- tuner
- box body
- circuit
- isolating
- isolation
- 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
Links
Images
Landscapes
- Structure Of Receivers (AREA)
Abstract
The utility model belongs to tuner technical field and discloses a novel isolating tuner. The novel isolating tuner comprises a metallic junction box body containing a tuning circuit. The metallic junction box body is equipped with signal output pin assemblies connected with a tuning circuit board and a signal input port connected with an external coaxial transmission line. The signal input port is equipped with an external conductor and an internal conductor insulated from the external conductor. The external conductor is isolated from the metallic junction box body by an isolating circuit or an isolator. The isolating tuner connected with the external transmission line is equipped with the signal isolating circuit or the insulating structure so as to achieve isolation of direct current and low-frequency alternating current. High-frequency signals can be transmitted through a capacitor so that impact current on the external transmission line can be further isolated so as not to enter the tuner circuit in the isolating tuner. Therefore, impact on the tuner circuit caused by external current is reduced and device security is increased.
Description
Technical field
The utility model relates to the TV tuner field, particularly a kind of novel isolation tuner with isolation features.
Background technology
Tuner is commonly called as TV tuner, is the important devices that constitutes television receive terminal.Because of the strong jamming of high-frequency circuit signal and be easy to disturbedly, often High-Frenquency Electronic Circuit is arranged in the shielding box.
Existing tuner shielding box mainly adopts metal structure to realize, the signal that connects tuner is by external transmission lines transmission of wireless signals to be handled to the circuit that is positioned at shielding box.Because it is outdoor that the part transmission line is positioned at, when thundery sky, produced by effects of lightning the circuit in the shielding box is impacted, and then the detonator circuit fault.Identically thunder and lightning is introduced equipment cause security incident easily.
The utility model content
The technical problem that the utility model mainly solves provides a kind of novel isolation tuner, and this novel isolation tuner can be isolated external signal transmission line and tuner circuit, reduces the impact of foreign current to tuner circuit, improves the fail safe of equipment.
In order to address the above problem, the utility model proposes a kind of novel isolation tuner, this novel isolation tuner comprises: the metal connection box body of taking in tuning circuit, on this metal connection box body, be provided with signal output pin assembly that is connected with tuning circuit and the signal input port that is connected with the outer, coaxial transmission line, the inner wire that described signal input port is provided with outer conductor and insulate with this outer conductor wherein is provided with insulator between this outer conductor and the metal connection box body.
Say further, between described inner wire and tuning circuit, also be provided with isolation capacitance.
The utility model also provides a kind of novel isolation tuner, this isolation tuner comprises: the metal connection box body of taking in tuning circuit, on this metal connection box body, be provided with signal output pin assembly that is connected with the tuning circuit plate and the signal input port that is connected with the outer, coaxial transmission line, the inner wire that described signal input port is provided with outer conductor and insulate with this outer conductor is provided with buffer circuit between outer conductor and genus junction box body.
Say that further described buffer circuit comprises isolation capacitance.
Say further, between described inner wire and tuning circuit, also be provided with isolation capacitance.
The utility model is isolated tuner, comprise the metal connection box body of taking in tuning circuit, on this metal connection box body, be provided with signal output pin assembly that is connected with the tuning circuit plate and the signal input port that is connected with the outer, coaxial transmission line, the inner wire that described signal input port is provided with outer conductor and insulate with this outer conductor is isolated by buffer circuit or insulator between outer conductor and genus junction box body.Be provided with signal isolation circuit or insulation system by the isolation tuner that is to be connected with external transmission lines, realization is to the isolation of direct current and low-frequency ac, high-frequency signal can pass through capacitive transmission, and then the impulse current on the external transmission lines can be isolated, can't enter the tuner circuit of isolating tuner inside, reduce the impact of foreign current, improve the fail safe of equipment tuner circuit.
Description of drawings
In order to be illustrated more clearly in the utility model execution mode or technical scheme of the prior art, to do simple the introduction to the accompanying drawing of required use in execution mode or the description of the Prior Art below, apparently, and the accompanying drawing in describing is execution modes more of the present utility model, to those skilled in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is that the utility model is isolated tuner example structure schematic diagram.
Below in conjunction with specific embodiment, and with reference to accompanying drawing, realization, functional characteristics and the advantage of the utility model purpose is described further.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the utility model is protected.
As shown in Figure 1, the utility model proposes a kind of novel isolation tuner embodiment.
This novel isolation tuner comprises: the metal connection box body 1 of taking in tuning circuit, on this metal connection box body, be provided with signal output pin assembly 3 that is connected with tuning circuit 2 and the signal input port that is connected with the outer, coaxial transmission line, the inner wire 5 that described signal input port is provided with outer conductor 4 and insulate with this outer conductor 4 wherein is provided with insulator 6 between this outer conductor 4 and the metal connection box body 1.Be provided with insulation system by the isolation tuner that is to be connected with external transmission lines, realization is to the isolation of direct current and low-frequency ac, high-frequency signal can pass through capacitive transmission, and then the impulse current on the external transmission lines can be isolated, can't enter the tuner circuit of isolating tuner inside, reduce the impact of foreign current, improve the fail safe of equipment tuner circuit.
As required, can between inner wire 5 and tuning circuit 2, also be provided with isolation capacitance,, further improve fail safe the isolation of direct current and low-frequency ac.
The utility model also proposes another kind of embodiment, and the 6 usefulness buffer circuits of the insulator in the foregoing description are substituted, and this buffer circuit comprises isolation capacitance, and its course of work is same as the previously described embodiments to be repeated no more.Can also between described inner wire and tuning circuit, also be provided with isolation capacitance as required.
Above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps part technical characterictic wherein is equal to replacement, and these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each execution mode technical scheme of the utility model.
Claims (5)
1. a novel isolation tuner comprises the metal connection box body of taking in tuning circuit, is provided with signal output pin assembly that is connected with tuning circuit and the signal input port that is connected with the outer, coaxial transmission line on this metal connection box body, it is characterized in that:
The inner wire that described signal input port is provided with outer conductor and insulate with this outer conductor wherein is provided with insulator between this outer conductor and the metal connection box body.
2. novel isolation tuner according to claim 1 is characterized in that:
Between described inner wire and tuning circuit, also be provided with isolation capacitance.
3. a novel isolation tuner comprises the metal connection box body of taking in tuning circuit, is provided with signal output pin assembly that is connected with the tuning circuit plate and the signal input port that is connected with the outer, coaxial transmission line on this metal connection box body, it is characterized in that:
The inner wire that described signal input port is provided with outer conductor and insulate with this outer conductor is provided with buffer circuit between outer conductor and genus junction box body.
4. novel isolation tuner according to claim 3 is characterized in that:
Described buffer circuit comprises isolation capacitance.
5. according to claim 3 or 4 described novel isolation tuners, it is characterized in that:
Between described inner wire and tuning circuit, also be provided with isolation capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020540 CN203086591U (en) | 2013-01-12 | 2013-01-12 | A novel isolating tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020540 CN203086591U (en) | 2013-01-12 | 2013-01-12 | A novel isolating tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203086591U true CN203086591U (en) | 2013-07-24 |
Family
ID=48832393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320020540 Expired - Fee Related CN203086591U (en) | 2013-01-12 | 2013-01-12 | A novel isolating tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203086591U (en) |
-
2013
- 2013-01-12 CN CN 201320020540 patent/CN203086591U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202364309U (en) | Television antenna isolator | |
| CN203521081U (en) | Inner cone plug-in lightning arrester | |
| CN203086591U (en) | A novel isolating tuner | |
| CN204577549U (en) | The integral structure of cavity body filter and power board | |
| CN110944138A (en) | Device for preventing cable television set top box HDMI from catching fire | |
| CN204179287U (en) | Radio frequency (RF) coaxial connector | |
| CN203933000U (en) | 3G lightning protection overvoltage protector | |
| CN204794664U (en) | Electromagnetic compatibility wave filter | |
| CN204045852U (en) | A kind of micro-rectangular connector | |
| CN202135244U (en) | Noise-proof and lightning-proof cable television signal distribution isolator | |
| CN202840928U (en) | Isolation type anti-interference power secondary system | |
| CN204651627U (en) | Radio frequency (RF) coaxial connector and GPS main line amplifier | |
| CN204145677U (en) | A kind of access device with isolation features | |
| CN203167125U (en) | Connector possessing signal isolation function and television antenna isolator | |
| CN203206379U (en) | Tuner with isolated signal connector | |
| CN205029337U (en) | Protector for antenna feed system | |
| CN201528202U (en) | RF DC isolation high-voltage protection converter | |
| CN207504279U (en) | A kind of surge prevention for the integrated connectors of RJ45 protects structure | |
| CN202259617U (en) | Connection structure of BMA cable assembly and filter cavity | |
| CN202949520U (en) | Wiring box with shielding and isolation | |
| CN208369210U (en) | A kind of electric current cut off device | |
| CN203800349U (en) | Novel transformer bushing tap grounding device | |
| CN217590253U (en) | Set top box and lightning protection circuit thereof | |
| CN203553374U (en) | Non-branch-distribution type cable user box panel | |
| CN203313304U (en) | High-voltage isolation protective device for coaxial cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20140112 |