Kodi mphamvu ndi chiyani?

Choyamba, zikomo chifukwa cha chidwi chanu ndipo ganizirani nkhaniyi, ndipo tikuyembekezera kuwerenga kwanu kopitilira. Mu zomwe zili pansipa, tikukupatsani chidziwitso chambiri chaukadaulo chokhudza zida zowunikira, choncho chonde khalani tcheru.

Posankha magetsi a LED, choyamba tidzayang'ana kwambiri zinthu zosiyanasiyana monga mphamvu, kuwala kwa kuwala, kutentha kwa mtundu, kuchuluka kwa madzi, kutentha kwa kutentha, zinthu zina ndi zina zotero. Kapena poyang'ana m'makatalogu azinthu, kupita ku mawebusayiti, kugwiritsa ntchito mainjini osakira a Google, kuonera makanema a YouTube kapena njira zina zopezera zinthu zabwino zomwe zimalimbikitsidwa. Ndipotu, ndikofunikira kuti ogwiritsa ntchito afotokoze zinthuzi popanga zisankho zawo. Koma, kodi mukudziwa kuti phindu la PF ndi chiyani?

Choyamba, mtengo wa PF (power factor) monga mphamvu, mtengo wa PF umayimira cosine ya kusiyana kwa gawo pakati pa voltage yolowera ndi mphamvu yolowera. Mtengowo umakhudza mwachindunji kugwiritsa ntchito bwino mphamvu zamagetsi.

Izi ndi zochitika ziwiri:

Pa nyali ya LED yokhala ndi PF yochepa, mphamvu zamagetsi zidzasinthidwa kukhala mphamvu yotentha ndi mitundu ina ya mphamvu panthawi yogwira ntchito. Gawo lina la mphamvu zamagetsi silingagwiritsidwe ntchito bwino ndipo limawonongeka.

Vuto lina ndilakuti imagwiritsa ntchito kuwala kwa LED kotsika mtengo kwambiri. Ikayambitsidwa, imasintha mphamvu zamagetsi kukhala mphamvu yowala bwino, motero imasunga mphamvu zomwe zimagwiritsidwa ntchito komanso kuchepetsa kuwononga mphamvu.

Mtengo wa PF umaonedwa kuti ndi chimodzi mwazinthu zofunika kwambiri poyesa momwe kuwala kwa LED kumagwirira ntchito. Chifukwa chake, tikukulimbikitsani kwambiri kuti musamale ndikuyerekeza mtengo wa PF wa mitundu ndi mitundu yosiyanasiyana posankha kuwala kwa LED. Mwanjira ina, mtengo wa PF ukakhala wapamwamba, mphamvu zamagetsi zimakhala zapamwamba, ndipo mphamvu pa chilengedwe zidzachepa moyenerera.

Ponseponse, mtengo wa PF ndi chinthu chofunikira ndipo chili ndi phindu lofunikira pakugwiritsa ntchito mphamvu moyenera. Chifukwa chake, posankha kuwala kwa LED, tikulimbikitsidwa kuganizira zinthu monga mphamvu, ma lumens, kutentha kwa mtundu, magwiridwe antchito osalowa madzi, mphamvu yotaya kutentha, zinthu, ndi zina zotero, ndikusamala mtengo wofunikira wa mtengo wa PF.