Nā Pono a me nā Pōʻino o ka dimming ʻaoʻao alakaʻi a me ka dimming ʻaoʻao hope

ʻO ka dimming alakaʻi-edge (leading-edge phase-cut dimming) a me ka dimming trailing-edge (trailing-edge phase-cut dimming) ʻelua mau ʻenehana dimming e pili ana i ka mana-phase, i hoʻohana nui ʻia i nā kukui LED a me nā ʻōnaehana kukui kuʻuna. Aia ma lalo kahi loiloi hoʻohālikelike o nā mea ʻeluamea hoʻomālamalamanā ʻenehana:

1. Kumumanaʻo Hana

Ka Dimming Alakaʻi:

Hana ʻia ka ʻoki ʻana i ke au uila i ka hoʻomaka ʻana o kēlā me kēia hapalua nalu o ke kaʻina AC (pae 0°). Ma ka hoʻopaneʻe ʻana i ka hoʻāla ʻana o ka manawa alakaʻi o nā thyristors (ʻo ia hoʻi, ka hoʻoponopono ʻana i ke kihi alakaʻi), ua kāohi ʻia ka au uila kūpono ma waena o ka ukana, a laila e hoʻoponopono ana i ka ʻōlinolino. No ka laʻana, ʻo ka nui o ka lohi ma ke kihi hoʻāla, ʻo ka pōkole o ka manawa alakaʻi, a ʻo ka haʻahaʻa o ka ʻōlinolino.

Ka Dimming ʻana o ka lihi hope:

ʻO ka ʻoki ʻana i ke au uila kokoke i ka hopena o kēlā me kēia hapalua nalu o ke kaʻina AC (phase 180°). Ma ka hoʻopau ʻana i ka manawa alakaʻi o MOSFET a i ʻole IGBTs ma mua, ua hoʻokō ʻia ka dimming. No ka laʻana, ʻo ka mua o ka manawa pio, ʻo ka haʻahaʻa o ke au uila maikaʻi, a me kae hoʻomāmā i ke kukui.

2. Nā ʻĀpana Koʻikoʻi

Ka Dimming Alakaʻi:

Hoʻohana ia i nā thyristors (SCR/Triac) ma ke ʻano he mau mea hoʻololi, ʻo ia nā mea hana semi-controlled (hiki ke hoʻomalu wale i ka conduction, ʻaʻole e hoʻopau ikaika).

Ka Dimming ʻana o ka lihi hope:

Hoʻohana ia i nā MOSFET a i ʻole IGBT e like me nā mea hoʻololi, ʻo ia nā mea i hoʻokele piha ʻia (hiki ke hoʻomalu ikaika i ka hoʻokele a me ka pio ʻana).

3. Hoʻohālikelike Hana

4. Hōʻuluʻulu manaʻo o nā pono a me nā pōʻino

Nā Pono Dimming Alakaʻi:

ʻenehana paʻa, kumukūʻai haʻahaʻa, kūpono me nā ʻōnaehana dimming thyristor e kū nei (e laʻa, incandescent kuʻunanā mea hoʻomālamalama).

Nā Pōʻino Dimming Alakaʻi:

Hiki ke kumu o ka ʻālohilohi o nā LED, ka hoʻopilikia electromagnetic, a ʻaʻole paha e pio loa ma lalo o nā ukana haʻahaʻa.

Nā Pono Dimming Trailing-edge:

ʻO ka dimming laumania, ʻaʻohe flickering, kākoʻo i nā ukana capacitive (e laʻa me nā mea hoʻokele LED), a hiki ke pio loa.

Nā Pōʻino Dimming Trailing-edge:

ʻO ke kumukūʻai kiʻekiʻe, ka komo ʻana o ka mākeke haʻahaʻa, hoʻohana nui ʻia no ka dimming kukui hoʻokahi mana haʻahaʻa.

5. Nā hiʻohiʻona noi

Ka Dimming Alakaʻi:

Kūpono no nā papahana hoʻoponopono kukui kuʻuna (e like me ke pani ʻana i nā kukui incandescent) a me nā ʻōnaehana kukui kalepa mana kiʻekiʻe (pono e hoʻokō i nā koi ukana liʻiliʻi loa).

Ka Dimming ʻana o ka lihi hope:

Kūpono no nā kukui LED mana haʻahaʻa (e like me nā kukui pākaukau, nā kukui hoʻokahi o ka hale) a me nā hiʻohiʻona e pono ai ke ʻano dimming kiʻekiʻe (e like me nā hale hōʻikeʻike, nā hōkele).

6. Nā ʻAno Hoʻomohala ʻenehana

Ke noho nei ka dimming alakaʻi ma ka mākeke ma muli o kona mau pono kumukūʻai, akā ke loaʻa mālie nei ka trailing-edge dimming i nā noi dimming kiʻekiʻe. Akā pono nā mea ʻelua e hoʻolohe i ka launa pū ʻana o ka mea hoʻokele, no ka mea, ʻo ka hui ʻana iā lākou e alakaʻi ai i ka hāʻule ʻana o ka dimming a i ʻole ka hōʻino ʻana o ka hāmeʻa.

7. Hopena

Loaʻa i ka dimming alakaʻi a me ka dimming trailing-edge ko lākou mau pono a me nā hemahema a kūpono no nā hiʻohiʻona noi like ʻole. He kūpono ke kumukūʻai o ka dimming alakaʻi a kūlike, e kūpono ana no nā hoʻoponopono kukui kuʻuna a me nā ʻōnaehana mana kiʻekiʻe. Hāʻawi ka dimming trailing-edge i ka dimming maʻalahi, ʻaʻohe flicker a kūpono hoʻi no nā pono dimming haʻahaʻa a me ke kiko kiʻekiʻe. I ka holomua ʻana o ka ʻenehana, e piʻi mālie ka hoʻohana ʻana o ka dimming trailing-edge i nā kahua dimming kiko kiʻekiʻe.