What is the network transformer for? (Ethernet network LAN LAN communication isolation filter) production plant / product schematic diagram / common products / price influencing factors

Hqst Yingsheng （ Hua Qiangsheng ） Electronic reading guide ： Today, we will talk about the network transformer from all aspects of the system and from all latitudes

Network transformer （ Ethernet The Internet LAN LAN Communication isolation filter ）

What is the network transformer used for

On the network communication motherboard , stay PHY Chip and RJ45 Between connectors , There will be a small black square , This thing is called network transformer , Title “ Data mercury ”, People often call it network isolation transformer ,LAN transformer , LAN transformer , Filter, etc .

It plays two main roles in a network device interface ;

One is to transmit data , It is the PHY The differential signal sent out is filtered by differential mode coupled coil coupling to enhance the signal , And it is coupled to the other end of the connecting network cable of different levels through the conversion of electromagnetic field ;

The second is to isolate different levels between different network devices , To prevent different voltages from damaging the equipment through network cable transmission .

In addition , Data mercury can also play a certain role in lightning protection of equipment . It is mainly used in network switches 、 Router 、 network card 、 Inside the hub , Signal coupling 、 High voltage isolation 、 impedance matching 、 Electromagnetic interference suppression, etc .

 

Network transformer production plant

 

Network transformer production plants are roughly divided into two types according to different main production processes ,

One is the front-end production plant , It is mainly concentrated in various inland areas with concentrated production , Such as J Or North Korea

The second is the production plant in the rear section , It mainly produces a full range of products , Strong brand management ability and quality control ability , Such as

Mingpu , Jingweida , Hua Qiangsheng , Youte et al .

 

Analysis of factors influencing the price of network transformer

（1） cost

In practice , The price of network transformer is based on cost 、 Profits and taxes are formulated in three parts . Cost can be divided into fixed cost and variable cost . The price of a product is sometimes determined by the total cost , Sometimes it is only determined by the variable cost . The cost is sometimes divided into social average cost and enterprise individual cost . In terms of the market price of similar products in society , It is mainly affected by the average social cost . In the case of full competition , The individual cost of the enterprise is higher or lower than the average social cost , It has little impact on the price of network transformer .

When the network transformer manufacturer sets the price , Costs should not be treated in isolation , It should be the same as the output 、 sales 、 Capital turnover and other factors should be taken into consideration . The cost factor should also be considered in combination with other factors affecting the price .

at present , The main costs of network transformers in China include packaging plastics, copper wires and other products and labor costs . In recent years, China's main production raw materials and labor costs have increased , Industrial enterprises can only gain profits through economies of scale or high-tech products occupy high-end market share .

（2） Supply and demand

The price of network transformer is affected by cost , It is also affected by market demand . That is, affected by the relationship between commodity supply and demand . When the market demand for goods is greater than the supply , The price should be higher ; When the market demand for goods is less than the supply , The price should be lower . In turn, , Price changes affect the total market demand , Thus affecting sales , And then affect the realization of enterprise goals . therefore , When setting prices, enterprises must understand the impact of price changes on market demand . An indicator of this impact is the price elasticity of demand for commodities . When demand exceeds supply , The price of network transformer rises , conversely , Then decrease .

 

Common network transformer types

Common types of network transformers are ：POE Network transformer ,POE+ Network transformer ,10G Network transformer , Automotive network transformer , Vehicle specification level network transformer , 10 Gigabit network transformer ,BMS Use network transformer , Military network transformer , Civil network transformer ,BMS Vehicle specification level network transformer , Conventional network transformer , Industrial network transformer ,

 

Common network transformer models

H82463S,H84802D,HX84802SP,H81608S,H81613SP,H80803D,H82404SP,H82409S,H80408S,H82408SP,HX84808S,H80610S,HX84803SP,HX82410SP,H82422SP,HX82401SP,H84802SP,H80410S,H80808D,H84803SH82463SP,H80802D,H83601D,H80811S,H82405SP,HX82410S,H80808S,HX84001SP,HX82411SP,H82412SPHX82405SP,HX84801SP,H80802S,H82423S,H81608SP,H80801D,H88802D,HX81608S,H80411S,HX82404SPH88801D,H87202D,H82401SP,0362-49--F,TM2179,B1201S,H1205DG,A10101SG,G9001DG,HR681680,MR-76451,RJ-032TC1,TG07-0206NSRL,24HSS1041-2HF,EPR1541,HR051001,LU1S041-LF,PT22-1554,T16105MC-R,14ST0001PLF,EPF8115S,HFJ14-2450ERL,LG1P109NLLF,PH722001G,ST-JK012,YL18-2077S,EPC1018H,H82412D,LAL1225-51,PE-68383NL,ST7011,UT20259S,EP9206,H5201NL,JX00-0065NL,PE-53935NL,SI-46041-F,TX1284NL,C851-2X8R-54-F,H24201MK-R,J3011G21DNL,P8202NL,SF1113,TX1066NLT,C1062NL,H16113MCG,23Z128SMNL,EPR1512S,HN60012G,LTC1111-03A,PT22-1478,T16110DF-R,15F-21NL,EPF8143S,HK-015,LG88502DF,PM36-1002K,ST-S1075,0TG1G-S202NLV6,EPE6059GM,HA-063D,LCM002R, wait

Schematic diagram of network transformer

The schematic diagram of network transformer should start from its internal structure , Generally speaking , Network transformer is divided into T Pieces of ,K Pieces of ,K3 Pieces of .T Pieces of Transforme For transformer parts , That is, the induced voltage is induced at the secondary end of the transformer through the magnetic circuit coupling . The package size and... Of each type of network transformer will be marked on the drawings T Pieces of ,K Pieces of ,K3 Connection and circuit composition of components

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