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 PDF

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Publication number
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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China
Prior art keywords
network interface
pins
transformer
resistance
circuit
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CN201820654006.4U
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Chinese (zh)
Inventor
汪涛
黄睿
黄耿
钟炜航
周振建
廖爱连
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SHENZHEN YDS TECHNOLOGY Co Ltd
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SHENZHEN YDS TECHNOLOGY Co Ltd
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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

The circuit of compatible POE network interface and common network interface
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.
CN201820654006.4U 2018-05-04 2018-05-04 The circuit of compatible POE network interface and common network interface Active CN208112642U (en)

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

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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)

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