Chifukwa chiyani magetsi ambiri olumikizirana amagwiritsa ntchito -48V magetsi?

Polankhulana, nthawi zambiri timapeza kuti mphamvu zambiri zoyankhulirana zimayendetsedwa ndi -48V. M'malo mwake, pali zifukwa zambiri ndi malingaliro a muyezo woterewu. Apa tikambirana mozama chifukwa ambiri kulankhulana magetsi -48V magetsi, ndi mndandanda wa nkhani zokhudzana.

1.Tgulu la mphamvu zothandiza
Pomvetsetsa chifukwa chake mphamvu yolumikizirana ndi -48V, timazindikira kaye gulu la mphamvu zogwiritsira ntchito. Mphamvu zomwe zimagwiritsidwa ntchito, ndiko kuti, mphamvu zosinthira zomwe zimagwiritsidwa ntchito pamoyo wathu watsiku ndi tsiku, nthawi zambiri zimagawidwa m'magulu otsatirawa:
Mphamvu ya gawo limodzi: imakhala ndi waya umodzi wamoto ndi waya wa zero, ndipo magetsi nthawi zambiri amakhala 220 V. Amagwiritsidwa ntchito makamaka m'nyumba ndi malo ang'onoang'ono amalonda.
Mphamvu zamagawo atatu: wopangidwa ndi mawaya atatu amoto ndi waya wina zero, ndipo voteji nthawi zambiri ndi 380 V. Amagwiritsidwa ntchito kwambiri m'mafakitale, malo akuluakulu amalonda, ndi zina zotero.
Monga imodzi mwamagwero opangira magetsi olumikizirana, mphamvu zogwiritsira ntchito zimayenera kudutsa mosasintha ndikukonza kuti zipereke mphamvu zokhazikika komanso zodalirika za DC pazida zoyankhulirana.

2.-48V magetsi ndi momwe amapangira?
Nthawi zambiri, kutulutsa mphamvu kwa -48V kutha kufotokozedwa motere: Zothandizira: Choyamba, zofunikira zimalowetsedwa mu dongosolo lamagetsi olankhulana. Zomwe zimagwiritsidwa ntchito zimatha kukhala 220V kapena 380V AC. Kukonzanso: AC iyenera kusinthidwa kukhala DC ndi wokonzanso. Okonzanso amagwiritsa ntchito ma diode ndi zida zina zamagetsi, amasintha theka labwino ndi loyipa la AC kukhala mbali yomweyo ya DC.
Kusefa: ma ripples ndi zonyansa zimasefedwa kuchokera ku DC yokonzedwa kuti DC ikhale yosalala komanso yokhazikika. Kukhazikika kwa Voltage: khazikitsani magetsi a DC pa -48V kudzera pagawo lokhazikika lamagetsi, lomwe limatha kusintha voteji molingana ndi kusintha kwa katundu kuonetsetsa kuti zida zoyankhulirana zimapeza magetsi okhazikika. Mukadutsa masitepe omwe ali pamwambapa, munthu amatha kupanga magetsi olumikizirana -48V.

3.Chifukwa -48V magetsi? M'malo mwa +48V
Mphamvu yolumikizirana -48V magetsi m'malo mwa +48V, makamaka pazifukwa izi:
Zifukwa zakale
M'makina oyambilira olumikizirana, machubu amagetsi ndi zida zina zimafunikira magetsi okwera kuti agwire ntchito. Pofuna kutsimikizira kukhazikika ndi kudalirika kwa zida, -48V idasankhidwa ngati voteji wanthawi zonse pamagetsi olumikizirana. Mulingo uwu udapitirizidwa pomwe ukadaulo wolumikizirana ukupitilira kukula.
Zida zoyambilira monga kusinthana kwamatelefoni zidagwiritsa ntchito ma elekitiromagineti relay, zomwe zimafuna kusintha kwakukulu pakali pano zikakhala pachibwenzi komanso kuchotsedwa. Kugwiritsa ntchito mphamvu ya -48V kumathandizira kuti ma relay azikhala ndi kusintha pang'ono kwakanthawi akamagwira ntchito komanso kuchotsedwa, motero kumapangitsa kudalirika ndi kukhazikika kwa zida.
Zinthu Zotetezedwa
Mphamvu yotetezeka ya thupi la munthu nthawi zambiri imatengedwa kuti ndi 36V kapena kuchepera. Ndi chithandizo cha -48V, pakakhala vuto la pansi, ndi zina zotero, madzi akuyenda padziko lapansi kupyolera muzitsulo zokhazikika popanda kuopsa kwa thupi la munthu. Ndi chithandizo cha + 48V, pakakhala vuto la pansi, madzi akuyenda kuchokera ku thupi kupita kudziko lapansi, kuonjezera chiopsezo cha kugwedezeka kwa magetsi.
-48V mphamvu zamagetsi nthawi zambiri zimapangidwa ndi chitetezo chapansi kuti zipititse patsogolo chitetezo chadongosolo. Pamene vuto la pansi likuchitika mu dongosolo, chipangizo chotetezera pansi chidzadula mwamsanga mphamvu ndikuletsa ngozi kuti isakule.
Zambiri Zaukadaulo
M'njira zoyankhulirana, zida zambiri zamagetsi zimagwiritsa ntchito zida za semiconductor monga diode, transistors, ndi mabwalo ophatikizika. Zida za semiconductor izi zimafuna voteji yokhazikika yamagetsi kuti zigwire ntchito ndipo ndizofunikira kwambiri potengera kuchuluka kwamphamvu komanso phokoso lochokera kumagetsi. Kugwiritsa ntchito magetsi a -48V kungapereke zida za semiconductor zokhala ndi magetsi okhazikika komanso oyeretsa pogwiritsa ntchito njira monga ma voltage regulator circuit ndi fyuluta dera kuti ziwongolere ntchito ndi kudalirika kwa zipangizo.
Poyerekeza ndi kutumiza ndi kugawa mphamvu, -48V magetsi magetsi ali ndi zotayika zazing'ono za mzere ndi kutsika kwa magetsi. Izi zili choncho chifukwa mphamvu ikakhala yofanana, voteji yaing'ono, yokulirapo, ndipo kutayika kwa mzere kumakhala kofanana ndi sikweya yapano. Chifukwa chake, kugwiritsa ntchito magetsi -48V kumatha kuchepetsa kutayika kwa mzere ndikukweza mphamvu yotumizira mphamvu.

4.Kodi pali kusiyana kotani pakati pa -48V ndi +48V?
Pali zosiyana zingapo pakati pa -48V ndi +48V:
polarity osiyana
Uku ndiko kusiyana koonekeratu. -48V imatanthawuza kuti mtengo woipa wa magetsi ndi -48V wokhudzana ndi nthaka, pamene + 48V ikutanthauza kuti mtengo wabwino wamagetsi ndi + 48V wokhudzana ndi nthaka.
Kusiyana kwa Chitetezo
Monga tanena kale, -48V ili ndi m'mphepete mwa mnzakeyo pamalingaliro achitetezo popeza pakachitika vuto la pansi, mphamvu yapano idzadutsa pa chopinga choyikira pansi kupita kudziko lapansi popanda kudabwitsa thupi la munthu. Komano, kukakhala vuto la pansi pa +48V, mphamvu yamagetsi imapeza njira yopita kudziko lapansi kudzera m'thupi la munthu ndikuwonjezera mwayi wogwidwa ndi magetsi.
Zomangamanga
Pakukonza njira zoyankhulirana, pali zida zomwe zingafunike polarity yeniyeni mumagetsi awo. Mwachitsanzo, zida zina za semiconductor zimagwira ntchito potengera zinthu zina. Choncho, ndi panthawi yokonza njira yolankhulirana yomwe munthu ayenera kusankha pakati pa ma polarities a magetsi okhudzana ndi zofunikira za chipangizocho.
Komanso, zofunikira zaukadaulo pakuwongolera ma voliyumu, kusefa, ndi chitetezo chapansi pamakina opangira magetsi zitha kukhala zosiyana za -48V ndi +48V, pakati pa ena.

5.Ndi mayiko ati omwe atengera makina opangira magetsi -48V?
Ngakhale makina opangira magetsi -48V amagwiritsidwa ntchito kwambiri polumikizirana, si zigawo zonse zapadziko lapansi zomwe zimagwiritsa ntchito magetsi -48V. Mayiko ndi zigawo zosiyanasiyana zimatha kusankha mitundu yosiyanasiyana ya mphamvu zoyankhulirana malinga ndi momwe zilili komanso zosowa zawo.
M'mayiko ena aku Europe, mwachitsanzo, -60V kapena njira ina yamagetsi yamagetsi imatha kukhazikitsidwa. Ngakhale m'mayiko omwe akutukuka kumene kumene mphamvu zamagetsi ndizochepa, sikovuta kugwiritsa ntchito mphamvu zosinthika, monga mphamvu za dzuwa ndi mphepo.
Komabe, ndi ukadaulo wapadziko lonse lapansi waukadaulo wolumikizirana, maiko ndi zigawo zikuchulukirachulukira akugwiritsa ntchito njira zolumikizirana zapadziko lonse lapansi kuti zithandizire kuti zida zoyankhulirana zizigwirizana.

Zambiri zamagetsi zamagetsi zimatengera -48V mphamvu zamagetsi zimatsimikiziridwa ndi zifukwa zakale komanso chitetezo ndi zinthu zaukadaulo ndi zina zotero. Kutulutsa mphamvu kwa -48V kwadutsa pakulowetsa, kukonza, kusefa, ndi kukhazikika kwamagetsi. Poyerekeza ndi +48V, -48V ili ndi kupambana kwina muchitetezo chachitetezo ndi mawonekedwe aukadaulo. Ngakhale si zigawo zonse padziko lapansi zomwe zatengera -48V magetsi opangira magetsi, ndi chitukuko chaukadaulo wolumikizirana, njira zapadziko lonse lapansi zolumikizirana zolumikizirana zidzagwiritsidwa ntchito kwambiri.
M'malo oyankhulana m'tsogolomu, ndi chitukuko chokhazikika komanso luso lamakono, njira yolumikizira mphamvu yolumikizirana ipitiliza kukula ndikuwongolera. Titha kuyembekezera njira zothetsera mphamvu zoyankhulirana zogwira mtima, zotetezeka, komanso zodalirika, zomwe zingathandize kwambiri kupititsa patsogolo kwamakampani olankhulana.Chifukwa chiyani magetsi ambiri olumikizirana amagwiritsa ntchito -48V magetsi?