Poe injector: isiqu, incazelo

Poe injector - iyona aphansi idivayisi inethiwekhi esenza kube lula kakhulu ukufakwa amadivayisi kunethiwekhi ku ibhizinisi noma ehhovisi. Poe ubuchwepheshe (PowerOver-Ethernet) evumela powering imishini inethiwekhi ngekhebula inethiwekhi, ngaleyo ndlela asuse le imishini kusukela isidingo sokufaka Izitolo kagesi engeziwe ezindaweni lapho kungcono esingesihle futhi okukhulu segezi.

Ake sibheke izinzuzo idivayisi ezifana Poe amandla injector. Lapho ukufakwa ehhovisi e-Wi-Fi, inethiwekhi amakhamera, noma router, udinga ukuba acabangele ukuthi iphi esidayisa eliseduze (220 volts) ukuxhuma ugesi amayunithi kwezikhali ezinjalo. Ngokuvamile, lokhu kungacacisa kusinciphise izinketho zakho. Isikhathi esining impela, ukuze uthole ezingeni best of isignali ye-Wi-Fi, kubalulekile ukubeka yokufinyelela ephakeme, isibonelo, ophahleni. Kulokhu-ke kuyadingeka, noma ukusebenzisa wiring futhi ifake esidayisa entsha ophahleni, noma umhlatshelo izinga uphawu ukufaka imishini lapho kwamandla ivumela. Futhi uma udinga ukufaka imishini inethiwekhi ezindaweni ezisemajukujukwini (ophahleni, elisophahleni, nokunye), khona-ke izindleko Izintambo zikagesi ezisobala kanye lezisekelo ukufakwa kungaba eliphezulu kakhulu. Ukuze uxazulule le nkinga IEEE 802.3AF yadalwa, okuyinto ikuvumela ukuba uthumele nge-Ethernet kagesi. Ukuqinisekisa ukusebenza amadivaysi kwanele izintambo ekhona Isigaba sesithathu noma lesihlanu. Ngokungafani volts 220, lapho ugesi ihlinzekwa bonke imishini amandla okudla, Poe injector ihambisa amandla ngamunye kudivayisi ngabanye.

Njengoba zonke izinto kukhompyutha kunikwe amandla zamanje ngqo, indinganiso Poe eqala ukudluliswa ikhebula zinamandla DC pair ezisontekile yebanga kusuka 44 volts 57 volts. Lokhu value wakhethwa ngoba zingenziwa ngoba amakhebuli we pair ezisontekile ngaphandle kwemikhawulo e ubude. Ukuze yokudlulisela kagesi e ikhebuli kukhona amabhangqa amabili, ku ngamunye wabo bephethe samanje uhla 175 milliamperes (350 ma isiyonke). Ngakho, amandla idivayisi ezifana Poe injector ongafinyelela 16 Watts. Lokhu kungaphezu ukwanele powering imishini inethiwekhi.

Eqinisweni, i-Poe injector - idivayisi okudlulisa ama-signal ikhebula kwamandla kagesi. Le divayisi kungenziwa ihlanganiswe ngendlela imishini inethiwekhi (umzila) noma amisiwe njengoba idivayisi ezimele. Kulo mBhalo, i-injector Poe exhunywe kwi-pair ezisontekile futhi imbobo 220 volts. Uma idatha okokufaka kudivayisi, futhi ngesikhathi okukhipha - voltage kanye nedatha.

Ekuphetheni, siye sinezele ukuthi ubuchwepheshe Poe sicatshangelwa njengoba ithuba ukunciphisa izindleko ngenkathi Ukwethula amanethiwekhi emahhovisi kanye nezimboni. Nokho, ngokushesha impela kwakuqala ukwanda kanye ezizimele, njengoba kakhulu lula ukuxhumana imishini inethiwekhi futhi aqede inombolo ezingadingekile enkulu segezi.