CN208112642U - The circuit of compatible POE network interface and common network interface - Google Patents
The circuit of compatible POE network interface and common network interface Download PDFInfo
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- CN208112642U CN208112642U CN201820654006.4U CN201820654006U CN208112642U CN 208112642 U CN208112642 U CN 208112642U CN 201820654006 U CN201820654006 U CN 201820654006U CN 208112642 U CN208112642 U CN 208112642U
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Abstract
The utility model provides the circuit of a kind of compatible POE network interface and common network interface, including network card chip, transformer U85 and network interface RJ45, the network card chip, network interface RJ45 are connect with the transformer U85 respectively, differential signal is conveyed to the transformer U85 by the network card chip, is conveyed to the network interface RJ45 after transformer U85 boosting.The utility model has the beneficial effects that:Make ordinary network interface that can power, so that electric energy and network signal all pass through network cable transmission.
Description
Technical field
The utility model relates to attachment device more particularly to a kind of circuits of compatible POE network interface and common network interface.
Background technique
Traditional ordinary network interface cannot achieve power supply, can not be powered by cable to POE equipment.
Summary of the invention
In order to solve the problems in the prior art, the utility model provides a kind of compatible POE network interface and common network interface
Circuit, make ordinary network interface that can power, so that electric energy and network signal all pass through network cable transmission.
The utility model provides the circuit of a kind of compatible POE network interface and common network interface, including network card chip, transformer
U85 and network interface RJ45, the network card chip, network interface RJ45 are connect with the transformer U85 respectively, and the network card chip is by difference
Signal is conveyed to the transformer U85, is conveyed to the network interface RJ45 after transformer U85 boosting.
13 pins of the transformer U85,14 pins, 16 pins, 17 are drawn as a further improvement of the utility model,
Foot, 19 pins, 20 pins, 22 pins, 23 pins are connect with the network card chip respectively.
15 pins of the transformer U85 are sequentially connected in series capacitor C131, resistance as a further improvement of the utility model,
It is grounded after R337, capacitor C543.
18 pins of the transformer U85 are sequentially connected in series capacitor C138, resistance as a further improvement of the utility model,
It is grounded after R367, the capacitor C543.
21 pins of the transformer U85 are sequentially connected in series resistance R333, described as a further improvement of the utility model,
It is grounded after capacitor C543.
24 pins of the transformer U85 are sequentially connected in series resistance R34 0, described as a further improvement of the utility model,
It is grounded after capacitor C543.
The resistance R337, resistance R367, resistance R333, resistance R34 0 as a further improvement of the utility model,
Resistance value is 75 Europe.
The transformer U85, which is connected with, as a further improvement of the utility model, is powered equipment, the transformer
It is connect after the 15 pin serial connection resistance R290 of U85 with the equipment that is powered, the 18 pin serial connection resistance of the transformer U85
It is connect after R289 with the equipment that is powered.
2 pins of the transformer U85,3 pins, 5 pins, 6 pins, 8 as a further improvement of the utility model,
Pin, 9 pins, 11 pins, 12 pins are connect with the network interface RJ45 respectively.
The transformer U85 is connected with capacitor C546, the transformer U85 as a further improvement of the utility model,
1 pin, 4 pins, 7 pins, 10 pins are grounded after meeting the capacitor C546.
The model GST5009-R of the transformer U85 as a further improvement of the utility model,.
The utility model has the beneficial effects that：Through the above scheme, make ordinary network interface that can power, so that electric energy and net
Network signal all passes through network cable transmission.
Detailed description of the invention
Fig. 1 is the circuit diagram of the circuit of a kind of compatible POE network interface of the utility model and common network interface.
Fig. 2 is the functional block diagram of the circuit of a kind of compatible POE network interface of the utility model and common network interface.
Specific embodiment
The utility model is described in further detail for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1 to Figure 2, a kind of circuit of compatible POE network interface and common network interface, including network card chip 101, transformation
Device U85 102 and network interface RJ45 103, the network card chip 101, network interface RJ45 103 respectively with the transformer U85 102
Differential signal is conveyed to the transformer U85 102 by connection, the network card chip 101, is boosted through the transformer U85 102
After be conveyed to the network interface RJ45 103.
As shown in Figure 1 to Figure 2,13 pins of the transformer U85 102,14 pins, 16 pins, 17 pins, 19 pins,
20 pins, 22 pins, 23 pins are connect with the network card chip respectively.
As shown in Figure 1 to Figure 2,15 pins of the transformer U85 102 are sequentially connected in series capacitor C131, resistance R337, electricity
It is grounded after holding C543.
As shown in Figure 1 to Figure 2,18 pins of the transformer U85 102 are sequentially connected in series capacitor C138, resistance R367, institute
It is grounded after stating capacitor C543.
As shown in Figure 1 to Figure 2,21 pins of the transformer U85 102 are sequentially connected in series resistance R333, the capacitor C543
After be grounded.
As shown in Figure 1 to Figure 2,24 pins of the transformer U85 102 are sequentially connected in series resistance R34 0, the capacitor C543
After be grounded.
As shown in Figure 1 to Figure 2, the resistance R337, resistance R367, resistance R333, resistance R34 0 resistance value be 75
Europe.
As shown in Figure 1 to Figure 2,2 pins of the transformer U85 102,3 pins, 5 pins, 6 pins, 8 pins, 9 are drawn
Foot, 11 pins, 12 pins are connect with the network interface RJ45 respectively.
As shown in Figure 1 to Figure 2, the transformer U85 102 is connected with capacitor C546, and the 1 of the transformer U85 102 is drawn
Foot, 4 pins, 7 pins, 10 pins are grounded after meeting the capacitor C546.
As shown in Figure 1 to Figure 2, the model GST5009-R of the transformer U85 102.
The transformer U85 102 as shown in Figure 1 to Figure 2, which is connected with, is powered equipment, and the equipment that is powered sets for POE
It is standby, it is connect after the 15 pin serial connection resistance R290 of the transformer U85 with the POE equipment, the 18 of the transformer U85 are drawn
Connect after foot series resistance R289 with the POE equipment, the resistance R290, resistance R289 resistance value be 0 Europe.
The circuit of a kind of compatible POE network interface and common network interface provided by the utility model, working principle are as follows：A_
CAMDI0+~A_CAMDI3+ and A_CAMDI0-~A_CAMDI3- is the difference letter that network card chip is conveyed to transformer U85 102
Number, and A_AMDI0+~A_AMDI3+ and A_AMDI0-~A_AMDI3- are differential signals after the boosting of transformer U85 102
It is conveyed to the differential signal of network interface RJ45 103.Resistance R337, resistance R367, resistance R333, resistance R34 0 are 4 75 Europe electricity
Resistance, when noise load is on each pair of signal cable, characteristic impedance is 75 ohm.Every group of tap adds one 75 ohm of electricity to ground
Resistance, thus impedance matching, common-mode noise can be imported on the ground well.Capacitor C543 is 1000pF/2000V capacitor, is guaranteed
The high pressure requirement that 2250Vdc can be born from cable to ground meets 802.3 specification of IEEE, due to using poe to power,
48V high pressure is isolated with signal with two capacitors of capacitor C131 and capacitor C138, it is ensured that equipment safety.A_AMCT0 passes through
0 Europe resistance is connected to VLAN1, and VLAN1 is then the high pressure that POE chip is generated according to external device, voltage value between 0-48V,
And A_AMCT1 is connected to 48V voltage by 0 Europe resistance, is powered by the pressure difference of A_AMCT0 and A_AMCT1 to POE equipment.
The circuit of a kind of compatible POE network interface and common network interface provided by the utility model, when cable connects the network equipment
When, POE controls chip and is detected by A_AMCT0, if it is the common network equipment, then the voltage of A_AMCT0 is set as 48V,
Since the pressure difference that the voltage of A_AMCT1 is 48V, such A_AMCT0 and A_AMCT1 is 0, high voltage is avoided to set general network
Standby breakdown.If it is the poe network equipment, then the voltage of A_AMCT0 is adjusted into voltage value according to the poe equipment connect, make A_
The pressure difference of AMCT0 and A_AMCT1 matches with voltage required for the poe network equipment, realizes that cable is powered to poe equipment.
The circuit of a kind of compatible POE network interface and common network interface provided by the utility model, changes ordinary network interface
It cannot achieve the inconvenience of power supply, so that electric energy and network signal all pass through network cable transmission, so that some industrial network equipments can
To be not necessarily to power supply, only connect a cable can the double transmission of data electric power, greatly improve practicability.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (10)
1. a kind of circuit of compatible POE network interface and common network interface, it is characterised in that：Including network card chip, transformer U85 and net
Mouthful RJ45, the network card chip, network interface RJ45 are connect with the transformer U85 respectively, and the network card chip is defeated by differential signal
The transformer U85 is given, is conveyed to the network interface RJ45 after transformer U85 boosting.
2. the circuit of compatible POE network interface and common network interface according to claim 1, it is characterised in that：The transformer
13 pins of U85,14 pins, 16 pins, 17 pins, 19 pins, 20 pins, 22 pins, 23 pins respectively with the network interface card core
Piece connection.
3. the circuit of compatible POE network interface and common network interface according to claim 1, it is characterised in that：The transformer
15 pins of U85 are grounded after being sequentially connected in series capacitor C131, resistance R337, capacitor C543.
4. the circuit of compatible POE network interface and common network interface according to claim 3, it is characterised in that：The transformer
18 pins of U85 are grounded after being sequentially connected in series capacitor C138, resistance R367, the capacitor C543.
5. the circuit of compatible POE network interface and common network interface according to claim 4, it is characterised in that：The transformer
21 pins of U85 are grounded after being sequentially connected in series resistance R333, the capacitor C543.
6. the circuit of compatible POE network interface and common network interface according to claim 5, it is characterised in that：The transformer
24 pins of U85 are grounded after being sequentially connected in series resistance R34 0, the capacitor C543.
7. the circuit of compatible POE network interface and common network interface according to claim 6, it is characterised in that：The resistance
R337, resistance R367, resistance R333, resistance R34 0 resistance value be 75 Europe.
8. the circuit of compatible POE network interface and common network interface according to claim 4, it is characterised in that：The transformer
U85, which is connected with, is powered equipment, connect after the 15 pin serial connection resistance R290 of the transformer U85 with the equipment that is powered,
It is connect after the 18 pin serial connection resistance R289 of the transformer U85 with the equipment that is powered.
9. the circuit of compatible POE network interface and common network interface according to claim 1, it is characterised in that：The transformer
2 pins, 3 pins, 5 pins, 6 pins, 8 pins, 9 pins, 11 pins, 12 pins of U85 are connect with the network interface RJ45 respectively.
10. the circuit of compatible POE network interface and common network interface according to claim 8, it is characterised in that：The transformer
U85 is connected with capacitor C546, and 1 pin, 4 pins, 7 pins, 10 pins of the transformer U85 meet the capacitor C546 and are followed by
Ground, the model GST5009-R of the transformer U85.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820654006.4U CN208112642U (en) | 2018-05-04 | 2018-05-04 | The circuit of compatible POE network interface and common network interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820654006.4U CN208112642U (en) | 2018-05-04 | 2018-05-04 | The circuit of compatible POE network interface and common network interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208112642U true CN208112642U (en) | 2018-11-16 |
Family
ID=64115403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820654006.4U Active CN208112642U (en) | 2018-05-04 | 2018-05-04 | The circuit of compatible POE network interface and common network interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208112642U (en) |
-
2018
- 2018-05-04 CN CN201820654006.4U patent/CN208112642U/en active Active
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