Mphamvu ya magetsi pa nyali za LED

Mphamvu yamagetsi ndi gawo lofunikira la nyali za LED, ziribe kanthunyali za LED zotha kuchajidwansokapena nyali zouma za LED. Tiyeni timvetse bwino tanthauzo la mphamvu.

1, Mphamvu
Mphamvu ya chinthu imasonyeza luso laNyali ya LEDkutulutsa mphamvu yogwira ntchito. Mphamvu ndi muyeso wa kuchuluka kwa mphamvu yotumizira, ndipo m'ma DC circuits ndi chinthu chopangidwa ndi voltage V ndi current A. Mu AC system, ndizovuta kwambiri: AC current ina imazungulira mu katundu, womwe umatchedwa reactance current kapena harmonic current, zomwe zimapangitsa kuti mphamvu yoonekera (voltage Volt by current Amps) ikhale yayikulu kuposa mphamvu yeniyeni. Kusiyana pakati pa mphamvu yoonekera ndi mphamvu yeniyeni kumabweretsa mphamvu, ndipo power factor ndi yofanana ndi chiŵerengero cha mphamvu yeniyeni ndi mphamvu yoonekera. Chifukwa chake mphamvu yeniyeni mu AC system ndi yofanana ndi mphamvu yodalira nthawi ya power factor.
Ndiko kuti: mphamvu = mphamvu yeniyeni / mphamvu yoonekera. Mphamvu yokha ya katundu wolunjika monga chotenthetsera chamagetsi ndi babu ndi 1. Kusiyana pakati pa mphamvu yeniyeni ndi mphamvu yoonekera ya zida zambiri ndi kochepa kwambiri komanso kosafunikira, pomwe kusiyana pakati pa zida zoyezera monga nyali ndi kwakukulu komanso kofunikira.

2, Mphamvu yooneka
Mphamvu yogwira ntchito: chinthu chopangidwa ndi AC voltage ndi AC current. Ndi fomula iyi: S=UI. Kumene S imayesedwa mphamvu yotulutsa mu VA (volt-ampere); U imayesedwa mphamvu yotulutsa mu V, monga 220V, 380V, ndi zina zotero; I imayesedwa mphamvu yotulutsa mu A. Mphamvu yowoneka ili ndi magawo awiri: mphamvu yogwira ntchito (P) ndi mphamvu yogwira ntchito (Q). Mphamvu yogwira ntchito imatanthauza gawo la ntchito yochitidwa mwachindunji. Mwachitsanzo, kuwala, kuzungulira kwa mota, dera lamagetsi likugwira ntchito. Chifukwa mphamvu iyi yakhala kutentha, imatha kumvedwa mwachindunji ndi anthu, kotero anthu ena ali ndi lingaliro lolakwika, ndiko kuti, mphamvu yogwira ntchito ngati mphamvu yowoneka, ndani akudziwa kuti mphamvu yogwira ntchito ndi gawo chabe la
Mphamvu yowonekera, yokhala ndi fomula iyi: P = Scos θ = UIcosθ = UIF. Kumene P ndi mphamvu yogwira ntchito mu W (watts); F = cos θ imatchedwa mphamvu, ndipo θ ndi kusiyana kwa gawo la ma voltage currents osiyanasiyana pa katundu wosakhala wa mzere. Mphamvu yogwira ntchito ndi gawo la mphamvu yosungidwa mu dera koma yosagwira ntchito mwachindunji, yofotokozedwa ndi fomula iyi: Q = Ssin θ = UIsinθ. Kumene Q ndi mphamvu yogwira ntchito mu var (kusowa).

KwaNyali zamutu za LEDndi ma circuit ena onse amagetsi omwe amagwira ntchito pa DC voltage, sizingatheke kugwira ntchito popanda magetsi.