Pins Tsim ntawm LAN Transformer

Txoj haujlwm ntawm nruab nrab kais ntawm LAN Transformer

Lub nruab nrab kais ntawm network transformer tseem hu ua LAN Transformer CT tus pin

Muaj ob txoj haujlwm tseem ceeb ntawm nruab nrab kais CT ko taw

{{0} Nrho. Muab qis impedance kev rau hom hom tam sim no thiab txo qis hom qub tam sim no / voltage (zoo ib yam li choke)

{{0} Nrho. Muab DC bias rau Rx / TX teeb liab hauv transceiver

Qhov chaw kais, yog tias PHY yog qhov uas tau tsav, txuas hluav taws xob tsis zoo, CT txuas lub zog!

PHY muab faib ua ob hom, ib qho yog voltage tsav, lwm qhov yog tsav tam sim no.

Lub tshuab tsav hluav taws xob xav tau txuas nrog lub zog txuas; qhov uas tau tsav tam sim no yuav tsum tau ncaj qha mus txuas rau hauv av nrog tus ntsuas hluav taws xob! Cov voltage uas txuas nrog feem ntau ua lub luag haujlwm ntawm kev thuam. Thaum koj tsis siv lub cais tawm los ncaj qha rau kev sib txuas ntawm PHY, koj xav tau qhov kev ntsuas kev tsim nyog. Phy ntawm cov tuam ntxhab sib txawv.

Yog li ntawd rau cov chips sib txawv, qhov sib txuas ntawm cov nruab nrab kais yog ze rau PHY. Rau cov ntsiab lus, thov saib hauv cov ntawv teev lus qhia thiab siv cov qauv siv ntawm nti.

Raws li rau vim li cas cov kais dej hauv nruab nrab ntawm LAN Transformer txuas nrog cov hloov hluav taws xob sib txawv, qhov no kuj tau txiav txim siab los ntawm UTP chaw nres nkoj theem teev hauv PHY nti cov ntaub ntawv siv.

Cov theem twg yog txiav txim siab yuav tsum txuas nrog qhov sib thooj. Ntawd yog, yog tias nws yog 2. 5 V, rub nws nce mus rau 2. 5 V, yog tias nws yog 3. 3 V, rub nws mus txog rau 3. 3 V.

{{0} Nrho. Rau cov teeb meem sib txawv zaus cov ntsiab lus, peb tuaj yeem xaiv qhov sib txawv capacitance qhov tseem ceeb los muab txoj kev cuam tshuam qis rov qab. Rau cov sib txawv chips thiab PCBs, ntau npaum li cas ntawm lub peev xwm no tuaj yeem ua tiav cov txiaj ntsig yuav tsum tau sim ua kom xyaum, tab sis nws tuaj yeem txiav txim siab tias lub zog no muaj qhov cuam tshuam zoo rau cov hluav taws xob tawm ntawm lub network chaw nres nkoj.

Thib ob, peb pib nkag siab txog qhov pin daim duab ntawm network transformer nti thiab bob-smith Circuit Court ntawm LAN Transformer

Hauv tus pin daim duab tsim ntawm lub network transformer nti, nyob rau hauv kev txiav txim siab rau kev cuam tshuam hom kev cuam tshuam tau coj los ntawm RJ 45 interface los ntawm lub cable, peb hloov cov pa LAN uas yooj yim rau hauv LAN Transformer nrog rau hom kev ua kom muaj kev cuam tshuam ntawm cov kev sib tshuam hauv cov txheej txheem tsim, thiab daim duab schematic ntawm cov hom transformer no yog qhia hauv daim duab saum toj no

Bob Smith Circuit: NC spare pin ntawm RJ 45 interface (sab nraud LAN Transformer) yuav tsum tau tsim nrog Bob Smith Circuit txoj kev sib txig sib kis tsis sib haum thiab txwv tsis pub cuam tshuam sab nraud. Tom qab sim, Bob Smith Circuit tuaj yeem tshem kev cuam tshuam los ntawm kev tiv thaiv txog 10 dB.

Thib ob chev capacitance tsim: Txawm hais tias LAN Transformer muaj kev ua haujlwm cais tawm, muaj ob peb lub pf faib cov capacitors ntawm thawj coils ntawm qhov hloov pauv; txhawm rau txhawm rau txhim kho kev ua haujlwm cais tawm ntawm qhov hloov pauv, nws raug nquahu kom nce lub peev xwm lim rau hauv av ntawm theem ob ntu ntawm qhov hloov pauv, xws li C4-C 7 ntawm daim duab hluav taws xob, uas yog {{2 }} pf ~ 10 PF.

LC lim tsim: hauv kev tsav lub zog hluav taws xob ntawm lub hloov hluav taws xob, ntxiv LC lim kom muaj kev cuam tshuam kev cuam tshuam nqa los ntawm lub zog, xws li L 1, C 1, C 2, C 3 ntawm daim duab Circuit Court, L 1 siv cov hlaws dai sib nqus, tus nqi raug yog 600 Ω / 1 00MHz, thiab tus nqi capacitance yog 0.0 1 μ f ~ 0. 1 μ F.

Series tsis kam cov qauv: hauv kev tsim ntawm 100 M Ethernet, yog tias lub network tsav voltage theem tau txo kom raug yam tsis muaj kev cuam tshuam kev sib txuas lus zoo, nws yuav pab tau rau EMC cuam tshuam kev cuam tshuam; nws kuj tseem tuaj yeem thov mus rau txoj kab sib txawv ntawm lub transmitter thiab txais ntawm transformer theem nrab los ntawm series tsis kam ntawm 10 Ω rau kev cuam tshuam kev cuam tshuam.

Xav paub ntau ntxiv, thov hu rau peb ntawmsales@xfullstar.com