Te pānga o te hiko ki ngā Rama Matua LED

He mea nui te tauwehenga mana o ngā rama LED, ahakoa te ahangā rama LED ka taea te whakahoungā rama LED maroke rānei. Nō reira, me mārama ake tātou he aha te tauwehe mana.

1, Mana
Ko te mana o te mea e tohu ana i te kaha o teRama matua LEDhei whakaputa i te mana hohe. Ko te mana he ine i te tere tuku pūngao, ā, i roto i ngā ara iahiko DC ko te hua o te ngaohiko V me te iahiko A. I roto i te pūnaha AC, he uaua ake: ka huri haere ētahi iahiko AC i roto i te kawenga, e kiia nei ko te iahiko tauhohenga, ko te iahiko harmonic rānei, e nui ake ai te mana kitea (ngaohiko Volt mā te iahiko Amps) i te mana tūturu. Ko te rerekētanga i waenga i te mana kitea me te mana tūturu ka arahi ki te tauwehenga mana, ā, he ōrite te tauwehenga mana ki te ōwehenga o te mana tūturu ki te mana kitea. Nō reira, he ōrite te mana tūturu i roto i te pūnaha AC ki te mana whakawhirinaki whakareatia ki te tauwehenga mana.
Arā: te tauwehenga mana = te mana tūturu / te mana kitea. Ko te tauwehenga mana o te kawenga rārangi pēnei i te whakamahana hiko me te pūrama rama he 1. He tino iti, he koretake hoki te rerekētanga i waenga i te mana tūturu me te mana kitea o te maha o ngā taputapu, engari he tino nui, he mea nui hoki te rerekētanga i waenga i ngā taputapu kaha pēnei i ngā rama.

2. Mana āhua
Mana hohe: te hua o te ngaohiko AC me te iahiko AC. Me te tātai penei: S=UI. Ko S te mana putanga whakatauranga i roto i te VA (volt-ampere); Ko U ​​te ngaohiko putanga whakatauranga i roto i te V, pēnei i te 220V, 380V, me ētahi atu; Ko I te iahiko putanga whakatauranga i roto i te A. E rua ngā wāhanga o te mana kitea: te mana hohe (P) me te mana tauhohe (Q). Ko te mana hohe e pā ana ki te wāhanga o te mahi i mahia tika. Hei tauira, ko te rama, ko te hurihanga o te motuka, ko te mahi a te ara iahiko hiko. Nā te mea kua huri tēnei mana hei wera, ka taea te rongo tika e te tangata, nō reira he whakaaro pohehe tā ētahi tāngata, arā, ko te mana hohe hei mana kitea, ko wai ka mōhio ko te mana hohe he wāhanga noa iho o
Ko te mana kitea, me te tātai: P = Scos θ = UIcosθ =UIF. Ko P te mana hohe i roto i te W (watts); ko F=cos θ te mea e kiia ana ko te tauwehe mana, ā, ko θ te rerekētanga ā-wāhanga o ngā iahiko ngaohiko rerekē i te kawenga kore-raina. Ko te mana tauhohe te wāhanga o te mana e rongoa ana i roto i te ara iahiko engari kāore i te mahi tika, e whakaatuhia ana e te tātai: Q = Ssin θ = UIsinθ. Ko Q te mana tauhohe i roto i te var (kore).

MōNgā rama matua arahiname ngā ara iahiko hiko katoa e mahi ana i runga i te ngaohiko DC, e kore e taea te mahi me te kore he hiko.