CN201656473U - Network transmission device for DC supply - Google Patents
Network transmission device for DC supply Download PDFInfo
- Publication number
- CN201656473U CN201656473U CN2010201710715U CN201020171071U CN201656473U CN 201656473 U CN201656473 U CN 201656473U CN 2010201710715 U CN2010201710715 U CN 2010201710715U CN 201020171071 U CN201020171071 U CN 201020171071U CN 201656473 U CN201656473 U CN 201656473U
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- CN
- China
- Prior art keywords
- coaxial cable
- equipment
- ac220v
- power consumption
- electrical equipment
- 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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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model provides a network transmission device for a DC supply, which comprises a coaxial cable, an AC220V AC-DC converter and electric equipment, and the output end of the AC220V AC-DC converter is connected with the coaxial cable through an inductor. The network transmission device is characterized in that a power supply DC/DC converter of the electrical equipment is connected with the coaxial cable through the inductor. No core transformer is needed to convert voltage, so that the electrical equipment has the advantages of small size, light weight, low price and the like. The DC/DC device is used to replace the AC-DC converting device in each electrical equipment, so that each electrical equipment has size reduction, low price, good stability, high reliability and no noise and no disturbance is produced to radio frequency signals, which ensures the efficient transmission of the radio frequency signals.
Description
Technical field
The utility model provides a kind of web-transporting device, and especially a kind of web-transporting device of direct current supply belongs to the web-transporting device technical field.
Background technology
Transmit employed optical sender, optical receiver, amplifier, centrally connected power supply device etc. in prior network device such as wired TV network, its supply power mode has following two kinds: a kind of AC220V of being is independently-powered, and another kind is the AC60V centrally connected power supply.AC220V is independently-powered to exist following deficiency: existing cable TV network all adopts coaxial cable to power and transmitting radio frequency signal, radiofrequency signal can produce loss in transmission course, the use so multiple devices will be together in series, because every equipment is placed in different places respectively, so make that the power supply point of each equipment is inequality, in a circuit, there is an equipment to have a power failure as long as will cause like this, signal then can't pass through this equipment, makes signal just can't transmit backward from this equipment.The AC60V centrally connected power supply can solve above-mentioned because of the different troubles of bringing of each device power supply (DPS) point, but must increase an AC60V centrally connected power supply device, this centrally connected power supply device is such: earlier the AC220V voltage transitions is become AC60V voltage, then by the coaxial cable power supply of the miscellaneous equipment in circuit again.At present, the core component of AC60V centrally connected power supply device is an appendiron core transformer and since its use cause the charger heaviness, bulky, cost an arm and a leg, and noise is arranged, therefore, increased the cost of AC60V centralized power supply system, produce noise effect simultaneously.In addition, no matter adopt above-mentioned which kind of mode to power, all must be equipped with a cover AC/DC conversion equipment in each power consumption equipment in the circuit, could power alternating current is converted to direct current, because AC/DC conversion equipment and equipment mainboard are mounted in the same housing, also can disturb radiofrequency signal in the AC/DC transfer process simultaneously, therefore all have problems such as volume is big, cost is high, transmission signals is not good enough because of the resonance frequency that is produced.Therefore, must be improved prior art.
Summary of the invention
The purpose of this utility model is to provide that a kind of volume is little, in light weight, cost is low, muting dc suppling network transmission equipment.
The utility model is finished by following technical proposal: a kind of web-transporting device of direct current supply, comprise coaxial cable, AC220V AC/DC changeover switch and power consumption equipment, the output of AC220V AC/DC changeover switch links to each other with coaxial cable by inductance, the power supply DC/DC transducer that it is characterized in that power consumption equipment links to each other with coaxial cable by inductance, provides direct current to power consumption equipment when utilizing the coaxial cable transmitting radio frequency signal.
The output of described AC220V AC/DC changeover switch can link to each other with any point of coaxial cable by inductance, also can be connected with coaxial cable by the inductance in the equipment, so that each power consumption equipment on this cable directly provides DC power supply.
Be connected with one or more power consumption equipment on the described coaxial cable, so that the direct current of AC220V AC/DC changeover switch output is provided to one or more power consumption equipment.
The utlity model has following advantage and effect, behind the employing such scheme: need not to re-use the appendiron core transformer changing voltage, thereby make power supply unit have advantages such as volume is little, in light weight, low price.Replace AC/DC conversion equipment in each power consumption equipment with the DC/DC device, each power consumption equipment volume is reduced, cheap, good stability, the reliability height, and do not have noise, and radiofrequency signal is not produced any interference, guarantee effective transmission of radiofrequency signal.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As Fig. 1, the dc suppling network transmission equipment that the utility model provides, comprise coaxial cable 3, AC220V AC/DC changeover switch 1 and many power consumption equipment W1, W2 ... Wn, the output of AC220V AC/DC changeover switch 1 links to each other with coaxial cable 3 by inductance 2, each power consumption equipment W1, W2 ... power supply DC/DC transducer 4 inputs of Wn link to each other with coaxial cable 3 by inductance 2, output links to each other with power consumption equipment, provides direct current to power consumption equipment when utilizing coaxial cable 3 transmitting radio frequency signals.
Claims (3)
1. the web-transporting device of a direct current supply, comprise coaxial cable, AC220V AC/DC changeover switch and power consumption equipment, the output of AC220V AC/DC changeover switch is connected with coaxial cable by inductance or by the inductance in the equipment, it is characterized in that the power supply DC/DC transducer of power consumption equipment links to each other with coaxial cable by inductance.
2. the web-transporting device of direct current supply according to claim 1 is characterized in that the output of described AC220V AC/DC changeover switch links to each other with any point of coaxial cable by inductance or by the inductance in the power consumption equipment.
3. the web-transporting device of direct current supply according to claim 1 is characterized in that being connected with on the described coaxial cable one or more power consumption equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201710715U CN201656473U (en) | 2010-04-27 | 2010-04-27 | Network transmission device for DC supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201710715U CN201656473U (en) | 2010-04-27 | 2010-04-27 | Network transmission device for DC supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656473U true CN201656473U (en) | 2010-11-24 |
Family
ID=43121711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201710715U Expired - Fee Related CN201656473U (en) | 2010-04-27 | 2010-04-27 | Network transmission device for DC supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656473U (en) |
-
2010
- 2010-04-27 CN CN2010201710715U patent/CN201656473U/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: 20101124 Termination date: 20150427 |
|
| EXPY | Termination of patent right or utility model |