CN206533287U - A kind of network transformer circuit - Google Patents
A kind of network transformer circuit Download PDFInfo
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- CN206533287U CN206533287U CN201720039510.9U CN201720039510U CN206533287U CN 206533287 U CN206533287 U CN 206533287U CN 201720039510 U CN201720039510 U CN 201720039510U CN 206533287 U CN206533287 U CN 206533287U
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- network transformer
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Abstract
The utility model is related to a kind of network transformer circuit; including a sub-circuit; the sub-circuit includes termination power, filter circuit and the protection circuit being sequentially connected; termination power is connected with network difference mode signal output line; bidirectional couple and isolated DC signal are carried out to network difference mode signal; the filter circuit includes common mode inductance; two pins of Same Name of Ends of common mode inductance and the output line of termination power are connected; other two pins of common mode inductance are connected with protection circuit, and protection circuit is released to abnormally high-voltage and high current.The utility model is connected with electronic component to be formed the mode of circuit and realizes the coupling, filtering and defencive function of existing market magnetic element network transformer; it can be used instead of existing magnetic element network transformer; network transformer circuit can use machine fully-automatic production, and production efficiency is high, production cost is low, product quality is stable.
Description
Technical field
The utility model is related to network communication apparatus technical field, particularly a kind of network transformer circuit.
Background technology
In ethernet device, when meeting RJ45 by PHY, centre can all add a network transformer, transmission network difference
Signal, realizes signal isolation coupling, filtering and defencive function.Existing network transformer is traditional magnetic core coil structure, no
But there are problems that signal low frequency characteristic is poor, transmission speed, and core parts transformer magnetic coil winding need it is a large amount of
Hand wound, low production efficiency, cost of labor are high, while artificial production causes quality of finished to be difficult to management and control, cause fraction defective high,
With 100,000 PCS products meters, it is necessary to about 550 people, 12 work when complete, deficient manufacturing procedure rate surpasses 1%.
The content of the invention
In order to solve low production efficiency that current network transformer is present, the problem of cost is high, the utility model proposes
A kind of network transformer circuit, to improve production efficiency and reduce cost.
To achieve these goals, the utility model provides a kind of network transformer circuit, it is characterised in that including one
Individual sub-circuit, the sub-circuit includes termination power, filter circuit and the protection circuit being sequentially connected, and termination power and network are poor
Mould output line is connected, and bidirectional couple and isolated DC signal are carried out to network difference mode signal, and the filter circuit is included altogether
Mould inductance, two pins of Same Name of Ends of common mode inductance and the output line of termination power are connected, other two pins of common mode inductance
It is connected with protection circuit, protection circuit is released to abnormally high-voltage and high current.
The utility model network transformer circuit, is connected to form the mode of circuit and realize existing market magnetic with electronic component
Coupling, filtering and the defencive function of property element networks transformer, can be used, net instead of existing magnetic element network transformer
Network transformer circuit can use machine fully-automatic production, and production efficiency is high, production cost is low, product quality is stable.Using common mode
Inductance is filtered, can effectively suppression common mode interference signal, play good EMI filter actions, make network signal transmission bandwidth
Wider, the more stable, transmission speed of transmission is faster.
Brief description of the drawings
Fig. 1 is the sub-circuit circuit diagram of network transformer；
Fig. 2 is the network transformer circuit diagram with two sub-circuits；
Fig. 3 is the network transformer circuit diagram with three sub-circuits
The utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment
Embodiment one
Referring to Fig. 1, the network transformer circuit of the present embodiment only has a sub-circuit, and sub-circuit includes what is be sequentially connected
Termination power 1, filter circuit 2 and protection circuit 3.Termination power 1 is connected with two the root network difference mode signal output lines, high-speed transfer
Network difference mode signal, bidirectional couple and isolated DC signal are carried out to network difference mode signal.Termination power 1 uses passive capacitive coupling
Conjunction mode, including first resistor R1, the first electric capacity C1, second resistance R2 and the second electric capacity C2, first resistor R1 one end and one
The root network difference mode signal output line is connected, other end ground connection, and second resistance R2 one end is exported with another the root network difference mode signal
Line is connected, other end ground connection, and the first electric capacity C1 two ends connect a root network difference mode signal output line and common mode inductance L respectively
One Same Name of Ends pin, the second electric capacity C2 two ends connect another the root network difference mode signal output line and common mode inductance L respectively
Another Same Name of Ends pin.
The high frequency garbage signal that filter circuit 2 is used in screen signal, including common mode inductance L, common mode inductance L's is same
Name two, end pin and the output line of termination power are connected, i.e., be connected with the first electric capacity C1 and the second electric capacity C2, common mode inductance L's
Other two pins are connected with protection circuit 3, and two pins are also the output line of network transformer circuit.Common mode inductance
It is inhibited that L shows big inductance for common-mode signal, and shows the leakage inductance of very little hardly for difference mode signal
Work.Common mode inductance L can effectively suppression common mode interference signal, and on the difference mode signal of circuit normal transmission without influence.Altogether
Mould inductance L can play good EMI filter actions, make network signal transmission bandwidth it is wider, transmit more stable, transmission speed more
It hurry up.
Protection circuit 3 is used to release to abnormally high-voltage and high current, makes secondary electron element or circuit not by outer
The destruction of portion's high pressure, plays a protective role to secondary electron element or circuit.Protection circuit 3 include the first voltage-regulator diode D1 and
Second voltage-regulator diode D2, the first voltage-regulator diode D1 and the second voltage-regulator diode D2 positive pole is grounded, and negative pole is connected respectively
Common mode inductance L two pins.Protection circuit 3 is directly divided abnormally high-voltage and high current using the characteristic of voltage-regulator diode
Dissipate and introduce ground.
Embodiment two
Referring to Fig. 2, the network transformer circuit of the present embodiment has two sub-circuits, the input of each sub-circuit with not
Same network difference mode signal output line connection, i.e., the input and two the root network difference mode signal output lines of one sub-circuit are another
The input of individual sub-circuit and other two the root networks difference mode signal output lines.Each sub-circuit has 2 output lines, and whole network becomes
Transformer circuits just have 4 output lines.
Embodiment three
Referring to Fig. 3, the network transformer circuit of the present embodiment has three sub-circuits, the input of each sub-circuit with not
Same network difference mode signal output line connection, network transformer circuit is connected with 6 the root network difference mode signal output lines.The electricity per height
There are 2 output lines on road, and whole network transformer circuit just has 6 output lines.
The setting of network transformer circuit varying number sub-circuit, makes network transformer circuit have the input of varying number
Line and output line, in order to be matched with PHY and RJ45 with respective numbers port, expand the use of network transformer circuit
Scope.
All electronic component concentrated settings of network transformer circuit are easy to use, transport and stored in PCB substrate,
Assembling mode can use SMT modes.
The utility model network transformer circuit, is connected to form the mode of circuit and realize existing market magnetic with electronic component
Coupling, filtering and the defencive function of property element networks transformer, can be used, net instead of existing magnetic element network transformer
Network transformer circuit can use machine fully-automatic production, and production efficiency is high, production cost is low, product quality is stable.Using common mode
Inductance is filtered, can effectively suppression common mode interference signal, play good EMI filter actions, make network signal transmission bandwidth
Wider, the more stable, transmission speed of transmission is faster.
Claims (5)
1. a kind of network transformer circuit, it is characterised in that including a sub-circuit, the sub-circuit includes the coupling being sequentially connected
Circuit, filter circuit and protection circuit are closed, termination power is connected with network difference mode signal output line, network difference mode signal is carried out
Bidirectional couple and isolated DC signal, the filter circuit include common mode inductance, two pins of Same Name of Ends and coupling of common mode inductance
The output line connection of circuit is closed, other two pins of common mode inductance are connected with protection circuit, and protection circuit is to abnormally high-voltage
Released with high current.
2. network transformer circuit according to claim 1, it is characterised in that the termination power include first resistor,
First electric capacity, second resistance and the second electric capacity, one end of first resistor are connected with a root network difference mode signal output line, the other end
Ground connection, one end of second resistance is connected with another the root network difference mode signal output line, other end ground connection, the two ends point of the first electric capacity
A Same Name of Ends pin of a root network difference mode signal output line and the common mode inductance, the two ends difference of the second electric capacity are not connected
Connect another Same Name of Ends pin of another the root network difference mode signal output line and the common mode inductance.
3. network transformer circuit according to claim 2, it is characterised in that the protection circuit includes the first voltage stabilizing two
The positive pole of pole pipe and the second voltage-regulator diode, the first voltage-regulator diode and the second voltage-regulator diode is grounded, and negative pole is connected respectively
Two pins of the common mode inductance.
4. network transformer circuit according to claim 3, it is characterised in that network transformer circuit is arranged on PCB bases
On plate.
5. the network transformer circuit according to claim any one of 1-4, it is characterised in that network transformer circuit includes
Two or more sub-circuits, each sub-circuit is connected from different network difference mode signal output lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039510.9U CN206533287U (en) | 2017-01-13 | 2017-01-13 | A kind of network transformer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039510.9U CN206533287U (en) | 2017-01-13 | 2017-01-13 | A kind of network transformer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533287U true CN206533287U (en) | 2017-09-29 |
Family
ID=59920824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720039510.9U Active CN206533287U (en) | 2017-01-13 | 2017-01-13 | A kind of network transformer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206533287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849689A (en) * | 2017-01-13 | 2017-06-13 | 戴祁弘 | A kind of network transformer circuit |
| WO2022236799A1 (en) * | 2021-05-14 | 2022-11-17 | 华为技术有限公司 | Voltage regulator module and integrated chip |
-
2017
- 2017-01-13 CN CN201720039510.9U patent/CN206533287U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849689A (en) * | 2017-01-13 | 2017-06-13 | 戴祁弘 | A kind of network transformer circuit |
| WO2022236799A1 (en) * | 2021-05-14 | 2022-11-17 | 华为技术有限公司 | Voltage regulator module and integrated chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191120 Address after: Floor 2, workshop 4, No. 3288, Zhongshan West Road, Xiuzhou New District, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Weige Medical Devices Co.,Ltd. Address before: 5 / F, No.7, Lane 75, Huaide street, Beitou District, Taipei, Taiwan, China Patentee before: Dai Qihong |
|
| TR01 | Transfer of patent right |