Kuyini Poe-adaptha. Amandla phezu kwe-

I evamile yesimanje IT-Uchwepheshe uhlobo ikhebula "pair ezisontekile", ngawo PC kungaba kwenethiwekhi, kufihliwe ithuba emangalisayo. Iqiniso liwukuthi ngabo angadluliselwa hhayi kuphela digital ekusakazeni idatha, kodwa futhi ngamandla. Poe-adaptha - kule divayisi eyengeziwe okufanele isetshenziswe. Nokho, kukhona inani elikhulu izinhlobo nezindlela amadivayisi idatha ukuxhuma kunethiwekhi. Yiziphi imininingwane lisebenze?

ulwazi oluyisisekelo mayelana idivayisi

Poe-adaptha - kule divayisi, nika amandla kungenzeka Poe-ubuchwepheshe evumela ukuthi wena uthumele nge esiku amandla ezisontekile-pair kudivayisi oyifunayo. Kulokhu, ikhono-Ethernet-ikhebula ukuze nishintshisane amasignali digital elahlekile, futhi inethiwekhi kuyinto ukusebenza ngokugcwele.

Sokuqonda izifinyezo Poe - Amandla phezu kwe-. Lokho "amandla phezu kwe- ejwayelekile." Poe-adaptha ngezinye izikhathi ibizwa ngokuthi "injector" - kodwa uhlobo idivayisi yesibili namanje efanele ukucabangela ukushintshashintsha kuqala. Sifundela ukusetshenziswa ezithile idivayisi yokubika esimeningcondvo ukubandakanywa Poe-ubuchwepheshe amakhono.

Funda kabanzi mayelana nobuchwepheshe

Ubuchwepheshe Amandla phezu kwe- kukuvumela ukuthi unikeze amandla Tinhlobo amadivayisi: Wi-Fi imizila, amakhamera, amadivaysi USB. Inzuzo main lobu buchwepheshe ukuthi kuhilela ukusebenza isethi eyodwa izintambo - womabili amasignali ukusakaza digital, futhi usinika ugesi.

Ngenxa yalokho, ukufakwa amanethiwekhi asikho isidingo ukuba abeke izintambo ngoba enethiwekhi, kanye ukufaka kudingekile imishini ezengeziwe kagesi. Kwezinye izimo, ukufakwa amakhebuli kagesi kungase nzima indawo routing ngokomzimba yezingxenye inethiwekhi. Ngokwesibonelo, kuyenzeka ukuthi i-Wi-Fi adaptha inikeza isignali engcono endaweni esakhiweni lapho sikwazi ukuletha ugesi eziyinkinga. I Kungashiwo okufanayo mayelana amakhamera: ngezinye izikhathi kungase kudingeke ukuba ukuqapha izindawo kunzima ukunikeza amandla.

Poe ubuchwepheshe ivumela ukuhlela uxhumano amadivayisi ku kundawo, okungaba, njengoba sibonile ngenhla, ngenkathi idivayisi okukhipha e enethiwekhi ukusebenzisa amandla kuyo. Le ndlela kungenziwa baqashwe esimweni ngcono lamanje ingqalasizinda. Kuyinto ngempela ukuze ulethe amandla ukuba ezitolo ekhona.

Izinzuzo ubuchwepheshe

Ngakho, uma ukufinyeza izinzuzo ezingukhiye ubuchwepheshe embuzweni, bakwazi ukukhiqiza ohlwini olulandelayo:

- ukusetshenziswa ikhebula efanayo kungenzeka kokubili nikeza kwamandla kanye exchange of idatha digital;

- izinzuzo kungenzeka kwezomnotho ehambisana nokulingana ukungabi khona isidingo ukufaka amakhebuli kagesi nezinye izinto ezidingekayo;

- ephumelelisa ezingeni lelisetulu ukuphepha inethiwekhi elihambisana uhlobo ingqalasizinda, sibonga amazinga ukuqinisekisa ukuthi ukuvikeleka ledzingekako izingxenye ngokumelene voltage okhuphuka;

- kukhona kungenzeka yokuthuthukisa wamanje ingqalasizinda, inhlangano yezokuxhumana ezindaweni ukuthi ubukade ezingafinyeleleki lokukhuphula ngenxa isidingo laying zikagesi;

- kukhona kungenzeka yokuhlela amadivayisi elawulwa kude nge zenethiwekhi yezifiso.

Manje ukufunda amazinga ayisisekelo ngesisekelo letisebenta Poe-inethiwekhi.

amazinga

Iziphakamiso eziyisisekelo eziyisisekelo ahileleke inhlangano kwengqalasizinda efanele - 802.3af IEEE. Kuhloswe ukuba zihlanganisa idivayisi inethiwekhi izinhlobo 2 - imithombo yamandla futhi abathengi. Zingaba, njengoba sibonile ngenhla, i-Wi-Fi imizila, amadivaysi isitoreji inethiwekhi. Excellent umsebenzi ikhamera kumasistimu ezinjalo. Phakathi abakhiqizi brand owaziwa, esikhiqiza Isobho, okungase uxhumana the Poe-adaptha - Axis.

Isobho of uhlobo lokuqala - imithombo - kungenziwa etholakala engxenyeni yokuqala inethiwekhi noma phakathi umshini ophathwa ngesandla usinika amandla kagesi, futhi umthengi. standard Okubukwe amandla kabusha kwamandla i unshielded ezisontekile pair uhlobo amakilasi ezahlukene - ikakhulukazi asekelwe 5, 5e futhi 6, ngesikhathi voltage ka 48 V kanye ukusetshenziswa amandla phakathi 15 Watts. Kulokhu, ayinalo ithonya endleleni ikhwalithi digital ukuthumela idatha ngokusebenzisa ikhebula ungekho futhi ukuthuthukiswa lobuKhristu wamanje inethiwekhi ingqalasizinda isici umthamo is akulindelekile.

Izindlela zokusebenzisa zinamandla

Inethiwekhi, nesebenzela ngesisekelo Amandla phezu kwe- ejwayelekile, kungenziwa unikezwe ugesi emacebweni ezimbili.

Okokuqala, kungenzeka ukusebenzisa izigaba lokugcina imigqa-signal Transformers, ukuze labizwa ngokuthi okusezingeni eliphezulu. Voltage supply lisetshenziswa isikhungo uthepha kubo. Ngokufanayo nabo, kodwa futhi ohlangothini eyamukelayo, voltage iyasuswa. Ubuchwepheshe obunjalo kwenza kube nokwenzeka ukuba usebenzise pair efanayo izintambo izimpawu yezokusakaza ephezulu imvamisa, futhi ukudluliswa ugesi.

Okwesibili, umuntu angasebenzisa ukuze adlulisele amandla ukutholakala pair samanje in the angafundwa uhlobo ikhebula. Kungenzeka kanjani lokhu? Iqiniso liwukuthi practice 2 of 4 Imibhangqwana ezisebusweni-Ethernet-ikhebula, bavame awenziwanga. Yiqiniso, uma kuziwa ukwenza ngokuvumelana 100 Base TX ubuchwepheshe.

I ngokucacile waphawula wokusebenzisa inethiwekhi Poe format izitshela ukuthi ukusetshenziswa ethile injectors kuzoncika okuyinto indlela - voltage lokuqala noma lesibili ngocansi. Ngakho, amathuba imakwe 802.3af standard uvumele yokudlulisela kagesi ukuze yebhangqa izintambo noma 1.2, isib, 4.5 ikhebula. Futhi, injectors kungaba kuyahambisana ngokugcwele 100 Base TX ubuchwepheshe. Nokho, uma idabula, bese ukusebenza yimiphi izikimu amandla ukudluliswa eshiwo ngenhla, ngisho noma ngabe polarity of the uxhumano siyoshintshwa.

Izinhlobo Poe-imishini

Kukhona namakilasi amaningana imishini uyakwazi ezisebenza mode amandla ukudluliswa phezu pair elisontiwe. Poe-adaptha - omunye wabo (ohambelana Isobho babe inqwaba zinhlobo - sizofunda ngokucacile zabo). Kanye naye, kukhona Poe-ukushintshwa, kanye kumadivayisi ukudliwa. Ezimweni eziningi, zingase bafakwe ohlelweni eyodwa. Masitadishe imininingwane ngayinye izinhlobo ekhethiwe imishini ngaphezulu.

oqothulayo amadivayisi

Zidle amadivayisi - eqinisweni, okufanayo inethiwekhi Isobho, okuyinto unguNkulunkulu futhi unamandla phezu pair elisontiwe. Kuvele isici esibalulekile kubo - impedance input. Isibalo elihambisana ngokuvamile kunqunywa ku ezahlukene 19-26,5 ohms. Ngokuvamile, Ukwakheka kohlelo, ezixhunywe amadivayisi oqothulayo, capacitor ukhona.

ukushintshwa

Poe Shintsha yakhelwe ukuqinisekisa ukusebenza inethiwekhi ngokuya ukuqashelwa ngokunemba uxhumano ikhebula ukufinyelela amaphuzu. Uhlobo lwenethiwekhi elihambisana umsebenzi okusekelwe olandelwayo 802.3af, okuyinto sishilo ngenhla, kanye 802.3at. Bavumela ukuhlinzeka ukuxhumana ezahlukene zamadivayisi ngokuya kungenzeka amandla yokwanda kwama. Uma Poe inkinobho alisetshenziswa, kungenzeka ukuthi kwakubangelwa ukuhlukahluka okungahleliwe wamanje idliwe yidivayisi basonta pair ehluleka.

adapters

Isobho zalolu hlobo, njengoba sibonile ngenhla, ihlukaniswa ngezinhlobo zezilwane ezengeziwe. Ngakho, Poe-adaptha kungaba supply. Ngo oyiyo, amandla supply ekhona, kanye conjugation isici, okungase ifakwe ukuzihlalela futhi avele Kulokhu njengoba ibhokisi elincane noma kube wire ezivamile. I-adaptha yamandla we Poe, eqinisweni, ngezinye izikhathi obizwa ngokuthi i-injector. Ezimakethe Russian kukhona inqwaba lolu hlobo izixazululo. Ngokwesibonelo, ethandwa adaptha Poe TP Xhumanisa 150S. Into ebaluleke kakhulu isici yomsebenzi okuhambisanayo uhlobo devaysa - uhlaliseke voltage. lusebenze ubhekwa 48, uma sikhuluma imodeli buboniswa ngokuba TP Link.

Olunye uhlobo Poe-adaptha - ukuthatha. nokho, yena futhi isebenze ukunikeza Amadivayisi amandla nge pair ezisontekile, kodwa lawo labizwa ngokuthi ukudliwa kuphela. Ukuze imishini enjalo umsebenzi, kuyinto efiselekayo ukuthi umthamo wayo ingeqi Watts 24. Kungaphawulwa ukuthi kohlaka lesi sigaba amadivayisi labelwe Isobho, okuqondene isigaba splitters. Empeleni, ungakwazi futhi kwenziwe isibaluli amadivayisi oqothulayo.

Uma sikhuluma Poe-adapters, splitters kukhona, ziklanyelwe ukusebenza kwezinye izinhlobo zamadivayisi - Poe-Shintsha. Lokho umsebenzi wabo oyinhloko - ukwehlukana idatha inethiwekhi izenze ukusakazwa ehlukile ukusakaza okwalandela kudivayisi okungezona ezakho yesigaba oqothulayo amadivaysi. Splitters banesibopho ushintsho voltage okuyinto sisetshenziswa kubo, kulabo amazinga okuyizinto elikhulu imishini esibulalayo - isibonelo, kungenzeka izibalo 5, 12 noma 48 V

Futhi, splitters nazo oluthathwa zibe izinhlobo ezimbili - yekwentiwa. Ngokuqondene lokuqala, bakwazi ukusebenzisana njengendlela inkinobho, kanye ukunikezela adapters. Amadivayisi anjalo zihlanganisa, isibonelo, idabula uhlobo DWL-P50 kusukela D-Link. Poe-adaptha labizwa ngokuthi idivayisi uhlobo olucutshungulwayo nakho kungase yekwentiwa. Abakwazi nje ukusebenza injectors. Kulokhu, bayizithunywa ochwepheshe, avame ithengiswe ndawonye nabo in iphasela single.

Ezicashile operation adapters

Nge efanele uxhumano adapters Inika Amandla phezu ubuchwepheshe-Ethernet, izinkinga nenhlangano ukusebenza inethiwekhi akufanele kwenzeke. Kodwa ubunzima obuthile, ngenxa nezindinganiso ezithile elisetshenziswa izinhlelo ezifana usengakwazi zenzeka. Ngokwesibonelo, Poe-Shintsha unganquma ukuthi idivayisi umthombo asebenzayo akuyona oqothulayo, futhi inethiwekhi kungaba okwesikhashana uyeke nginomdlandla yokuthi uhlelo siqhutshwa e-idabula yekwentiwa. Kuyadingeka yena, esikhundleni salo esebenzayo. Enye inkinga kungenzeka - off voltage uma uzama ukuxhuma idivayisi esiningi kuya inkinobho. It zingaxazululwa ngokufaka devaysa eyengeziwe - Poe-Converter.

Kuvele Eqinisweni ezithakazelisayo wukuthi ngokuya izindleko ibhizinisi, okuyinto kudluliswa inethiwekhi, inombolo encane amadivayisi oqothulayo oholela kangcono ukusebenzisa Isobho yokwenziwa, nge ezinkulu - asebenzayo. Ezinye IT-ongoti bakholelwa ukuthi ngisho nangemva isibalo zokungena idlula 3 izingcezu, ungasebenzisa adapters asebenzayo.

Optimum ikhebula uhlobo

Amandla phezu ubuchwepheshe Inthanethi kusikisela ukubandakanywa ngaleyo ndlela pair elisontiwe. Kodwa, njengoba wazi, izinhlobo ezahlukene - ngokwesibonelo, 2 no-4 ngazimbili. Yimuphi kangcono ukufakwa inhlobo efanele kwenethiwekhi? Ngokusho kochwepheshe, ukusebenza kohlelo uyosindisa ukusetshenziswa kwanoma yiluphi uhlobo ikhebula. Kodwa uma kuba umthwalo osindayo phezu inkinobho - isibonelo, uma usebenzisa zonke etholakalayo nezimbobo zawo, intambo nge 4 ngazimbili - ukhetho best.