CN106849689A - A kind of network transformer circuit - Google Patents

A kind of network transformer circuit Download PDF

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Publication number
CN106849689A
CN106849689A CN201710027206.7A CN201710027206A CN106849689A CN 106849689 A CN106849689 A CN 106849689A CN 201710027206 A CN201710027206 A CN 201710027206A CN 106849689 A CN106849689 A CN 106849689A
Authority
CN
China
Prior art keywords
circuit
network
network transformer
common mode
output line
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.)
Pending
Application number
CN201710027206.7A
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Chinese (zh)
Inventor
梁永辉
戴祁弘
许佑谦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIAXING WEIGE MEDICAL DEVICES CO Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201710027206.7A priority Critical patent/CN106849689A/en
Publication of CN106849689A publication Critical patent/CN106849689A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/12Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/12Arrangements for reducing harmonics from ac input or output
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/12Arrangements for reducing harmonics from ac input or output
    • H02M1/123Suppression of common mode voltage or current

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

The present invention relates to a kind of network transformer circuit; including a sub-circuit; the sub-circuit includes the termination power, filter circuit and the protection circuit that are 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 are connected with the output line of termination power; other two pins of common mode inductance are connected with protection circuit, and protection circuit is released to abnormally high-voltage and high current.Present invention electronic component connect to be formed circuit mode realize existing market magnetic element network transformer coupling, filtering and defencive function; can be used instead of existing magnetic element network transformer; network transformer circuit can use machine fully-automatic production, and production efficiency is high, low production cost, product quality stabilization.

Description

A kind of network transformer circuit
Technical field
The present invention relates 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 that quality of finished is difficult to management and control, cause fraction defective high, With 100,000 PCS products meters, it is necessary to complete when about 550 people, 12 work, deficient manufacturing procedure rate surpasses 1%.
The content of the invention
In order to solve the problems, such as low production efficiency, high cost that current network transformer is present, the present invention proposes one kind Network transformer circuit, with improve production efficiency and reduces cost.
To achieve these goals, the invention provides a kind of network transformer circuit, it is characterised in that including a son Circuit, the sub-circuit includes the termination power, filter circuit and the protection circuit that are sequentially connected, and termination power is believed with network differential mode The connection of number output line, bidirectional couple and isolated DC signal are carried out to network difference mode signal, and the filter circuit includes common mode electricity Sense, two pins of Same Name of Ends of common mode inductance are connected with the output line of termination power, other two pins and the guarantor of common mode inductance Protection circuit is connected, and protection circuit is released to abnormally high-voltage and high current.
Inventive network transformer circuit, is connected to form the mode of circuit and realize existing market magnetic unit with electronic component The coupling of part network transformer, filtering and defencive function, can use instead of existing magnetic element network transformer, network change Transformer circuits can use machine fully-automatic production, and production efficiency is high, low production cost, product quality stabilization.Using common mode inductance To filter, can effectively suppression common mode interference signal, play good EMI filter actions, make network signal transmission bandwidth it is wider, Transmit more stable, transmission speed faster.
Brief description of the drawings
Fig. 1 is the sub-circuit circuit diagram of network transformer;
Fig. 2 is with two network transformer circuit diagrams of sub-circuit;
Fig. 3 is with three network transformer circuit diagram of sub-circuit
The present invention is described in further detail below in conjunction with the accompanying drawings.
Specific 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, one end of first resistor R1 and The root network difference mode signal output line is connected, other end ground connection, and one end of second resistance R2 exports with another the root network difference mode signal Line is connected, other end ground connection, and the two ends of the first electric capacity C1 connect a root network difference mode signal output line and common mode inductance L respectively One Same Name of Ends pin, the two ends of the second electric capacity C2 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 Two, end of name pin is connected with the output line of termination power, 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 L shows that big inductance is inhibited for common-mode signal, and the leakage inductance for showing very little for difference mode signal is hardly 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 Hurry up.
Protection circuit 3 is used to release 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 The positive pole of the second voltage-regulator diode D2, the first voltage-regulator diode D1 and the second voltage-regulator diode D2 is grounded, and negative pole is connected respectively Two pins of common mode inductance L.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., one input and two the root network difference mode signal output lines of sub-circuit are another The input of individual sub-circuit and other two the root network 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.
The all of electronic component concentrated setting of network transformer circuit is easy to use, transports and stores in PCB substrate, Assembling mode can use SMT modes.
Inventive network transformer circuit, is connected to form the mode of circuit and realize existing market magnetic unit with electronic component The coupling of part network transformer, filtering and defencive function, can use instead of existing magnetic element network transformer, network change Transformer circuits can use machine fully-automatic production, and production efficiency is high, low production cost, product quality stabilization.Using common mode inductance To filter, can effectively suppression common mode interference signal, play good EMI filter actions, make network signal transmission bandwidth it is wider, Transmit more stable, transmission speed 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.
CN201710027206.7A 2017-01-13 2017-01-13 A kind of network transformer circuit Pending CN106849689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710027206.7A CN106849689A (en) 2017-01-13 2017-01-13 A kind of network transformer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710027206.7A CN106849689A (en) 2017-01-13 2017-01-13 A kind of network transformer circuit

Publications (1)

Publication Number Publication Date
CN106849689A true CN106849689A (en) 2017-06-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710027206.7A Pending CN106849689A (en) 2017-01-13 2017-01-13 A kind of network transformer circuit

Country Status (1)

Country Link
CN (1) CN106849689A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117118424A (en) * 2023-02-13 2023-11-24 荣耀终端有限公司 Network voltage transformation circuit and electronic equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2735667Y (en) * 2004-01-06 2005-10-19 中国电力科学研究院 Channel optimizing device for power line high-speed data communication system
CN1859150A (en) * 2005-07-19 2006-11-08 上海华为技术有限公司 Communication link system and its method with protective function
CN202998013U (en) * 2012-11-29 2013-06-12 番禺得意精密电子工业有限公司 Network signal processing circuit
CN206533287U (en) * 2017-01-13 2017-09-29 戴祁弘 A kind of network transformer circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2735667Y (en) * 2004-01-06 2005-10-19 中国电力科学研究院 Channel optimizing device for power line high-speed data communication system
CN1859150A (en) * 2005-07-19 2006-11-08 上海华为技术有限公司 Communication link system and its method with protective function
CN202998013U (en) * 2012-11-29 2013-06-12 番禺得意精密电子工业有限公司 Network signal processing circuit
CN206533287U (en) * 2017-01-13 2017-09-29 戴祁弘 A kind of network transformer circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117118424A (en) * 2023-02-13 2023-11-24 荣耀终端有限公司 Network voltage transformation circuit and electronic equipment

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Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20191118

Address after: Floor 2, workshop 4, No. 3288, Zhongshan West Road, Xiuzhou New District, Jiaxing City, Zhejiang Province

Applicant after: Jiaxing Weige Medical Devices Co.,Ltd.

Address before: 5 / F, No.7, Lane 75, Huaide street, Beitou District, Taipei, Taiwan, China

Applicant before: Dai Qihong

SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170613