Mhedzisiro yesimba pamwenje ye LED

Simba chinhu chakakosha pamurazvo wemwenje we LED, zvisinei nekutimarambi e LED anochajwazvekana marambi e LED akaoma. Saka ngatinzwisisei kuti chii chinonzi power factor.

1, Simba
Simba rinoratidza kugona kweMwenje we LEDkuburitsa simba rinoita basa. Simba rinoyera mwero wesimba rinotumirwa, uye mumasekete eDC ndiwo chibereko chevoltage V ne current A. Mu AC system, zvakaoma zvikuru: mamwe AC current anotenderera mumutoro, unonzi reactance current kana harmonic current, izvo zvinoita kuti simba rinoonekwa (voltage Volt by current Amps) rive guru pane simba chairo. Musiyano uripo pakati pesimba rinoonekwa nesimba chairo unotungamira kune power factor, uye power factor yakaenzana ne ratio yesimba chairo kune simba rinoratidzika. Saka simba chairo mu AC system rakaenzana ne dependent power times the power factor.
Ndokunge: simba remagetsi = simba chairo / simba rinooneka. Simba remagetsi chete remutoro wakafanana neheater yemagetsi negirobhu remagetsi ndiro 1. Musiyano uripo pakati pesimba chairo nesimba rinooneka remidziyo yakawanda mudiki uye haunyanyi kukosha, nepo musiyano uripo pakati pemidziyo inobatika yakaita semarambi wakakura uye wakakosha.

2, Simba rinooneka
Simba rinoshanda: chigadzirwa cheAC voltage neAC current. Nefomura iyi: S=UI. Apo S inoongororwa simba rekubuda muVA (volt-ampere); U inoongororwa voltage yekubuda muV, senge 220V, 380V, nezvimwewo; I inoongororwa simba rekubuda muA. Simba rinoonekwa rine zvikamu zviviri: simba rinoshanda (P) uye simba rekuita (Q). Simba rinoshanda rinoreva chikamu chebasa rinoitwa zvakananga. Semuenzaniso, chiedza chinobuda, kutenderera kwemota, circuit yemagetsi iri kushanda. Nekuti simba iri rava kupisa, rinogona kunzwiwa zvakananga nevanhu, saka vamwe vanhu vane fungidziro, kureva kuti, simba rinoshanda sesimba rinoonekwa, ndiani anoziva kuti simba rinoshanda inongova chikamu che
Simba rinoonekwa, rine fomura: P = Scos θ = UIcosθ = UIF. Apo P iri simba rinoita basa muW (watts); F=cos θ inonzi simba, uye θ ndiyo musiyano wephase wemagetsi akasiyana pamutengo usingaverengeki. Simba rinoita basa chikamu chesimba rinochengetwa mudunhu asi risingashandiswe zvakananga, rinoratidzwa nefomura: Q = Ssin θ = UIsinθ. Apo Q iri simba rinoita basa muvar (kushaya).

ZveMwenje ye LEDuye mamwe maseketi ese emagetsi anoshanda nemagetsi eDC, hazvigoneke kushanda pasina magetsi.