ʻO nā Electrolytic Capacitors ke kumu nui no ke ola pōkole o nā kukui LED
Ua lohe pinepine ia ke ola pōkole o nā kukui LED ma muli o ke ola pōkole o ka lako mana, a ʻo ke ola pōkole o ka lako mana ma muli o ke ola pōkole o ka capacitor electrolytic. He mau manaʻo nō hoʻi kēia mau koi. Ma muli o ka hoʻopiha ʻia ʻana o ka mākeke me ka nui o nā capacitors electrolytic pōkole a me ka haʻahaʻa, me ka ʻoiaʻiʻo e hakakā nei lākou i ke kumukūʻai, hoʻohana kekahi mau mea hana i kēia mau capacitors electrolytic haʻahaʻa me ka nānā ʻole i ka maikaʻi.
ʻO ka mea mua, pili ke ola o kahi capacitor electrolytic i ka mahana ambient.
Pehea i wehewehe ʻia ai ke ola o kahi capacitor electrolytic? ʻOiaʻiʻo, ua weheweheʻia i nā hola. Eia naʻe, inā he 1,000 mau hola ka helu ola o ka capacitor electrolytic, ʻaʻole ia he manaʻo ua haki ka capacitor electrolytic ma hope o hoʻokahi kaukani mau hola, ʻaʻole, akā ua hoʻemi ʻia ka hiki o ka capacitor electrolytic e ka hapalua ma hope o 1,000 mau hola, ʻo ia ka mea. mua 20uF. I kēia manawa he 10uF wale nō.
Eia kekahi, ʻo ka helu ola o nā capacitors electrolytic he ʻano pono e hōʻike ʻia i ka nui o nā degere o ke ola wela o ka hana. A ua kuhikuhi pinepine ʻia ʻo ia ke ola ma 105 ° C ambient wela.
ʻO kēia no ka mea ʻo nā capacitors electrolytic a mākou e hoʻohana maʻamau ai i kēia lā he mau capacitors electrolytic e hoʻohana ana i ka electrolyte wai. ʻOiaʻiʻo, inā maloʻo ka electrolyte, e pau ka capacitance. ʻO ke kiʻekiʻe o ka mahana, ʻoi aku ka maʻalahi o ka evaporate electrolyte. No laila, ʻo ka helu ola o ka capacitor electrolytic pono e hōʻike i ke ola ma lalo o ka mahana ambient.
No laila, ua hōʻailona ʻia nā capacitors electrolytic a pau i kēia manawa ma 105 ° C. No ka laʻana, ʻo ka capacitor electrolytic maʻamau he 1,000 mau hola wale nō ma 105 ° C. Akā inā manaʻo ʻoe he 1,000 mau hola wale nō ke ola o nā capacitor electrolytic. He hewa loa kēlā.
ʻO ka maʻalahi, inā ʻoi aku ka kiʻekiʻe o ka mahana ambient ma mua o 105 ° C, ʻoi aku ka liʻiliʻi o kona ola ma mua o 1,000 mau hola, a inā haʻahaʻa ka mahana ambient ma mua o 105 ° C, ʻoi aku ka lōʻihi o kona ola ma mua o 1,000 mau hola. No laila, aia kahi pilina quantitative ma waena o ke ola a me ka mahana? ʻAe!
ʻO kekahi o nā pilina maʻalahi a maʻalahi hoʻi i ka helu ʻana, ʻo ia no kēlā me kēia 10 degere ka piʻi ʻana o ka mahana ambient, hoʻemi ʻia ke ola i ka hapalua; ʻO ka mea ʻē aʻe, no kēlā me kēia 10 degere ka emi ʻana o ka mahana ambient, ua pālua ʻia ke ola. ʻOiaʻiʻo he kuhi maʻalahi wale nō kēia, akā pololei nō hoʻi.
No ka mea, ua hoʻokomo pono ʻia nā capacitors electrolytic no ka mana hoʻokele LED i loko o ka hale kukui LED, pono wale mākou e ʻike i ka mahana i loko o ke kukui LED e ʻike i ke ola hana o ka capacitor electrolytic.
No ka mea i loko o nā kukui he nui nā LED a me nā electrolytic capacitors i hoʻokomo ʻia i loko o ka pahu hoʻokahi, ʻo ka mahana o ke kaiapuni o nā mea ʻelua. A ʻo kēia mahana ambient e hoʻoholo nui ʻia e ka hoʻomehana ʻana a me ke kaulike o ka LED a me ka lako mana. A ʻokoʻa nā kūlana hoʻomehana a me ka ʻoluʻolu o kēlā me kēia kukui LED.
Ke ala no ka hoʻonui ʻana i ke ola capacitor electrolytic
① E hoʻolōʻihi i kona ola ma ka hoʻolālā ʻana
ʻO ka ʻoiaʻiʻo, ʻo ke ala e hoʻonui ai i ke ola o nā capacitors electrolytic he maʻalahi loa, no ka mea, ʻo ka hopena o ke ola ma muli o ka evaporation o ka electrolyte wai. Inā hoʻomaikaʻi ʻia kona sila a ʻaʻole e ʻae ʻia e mahuka, e hoʻolōʻihi ʻia kona ola.
Eia kekahi, ma ka hoʻohana ʻana i kahi uhi plastik phenolic me kahi electrode a puni ia ma ke ʻano holoʻokoʻa, a me kahi gasket kūikawā pālua i hoʻopili paʻa ʻia me ka pūpū alumini, hiki ke hoʻemi nui ʻia ka nalowale o ka electrolyte.
② Hooloihi i kona ola mai ka hoohana ana
ʻO ka hoʻemi ʻana i kāna au ripple hiki ke hoʻonui i kona ola lawelawe. Inā ʻoi aku ka nui o ke au o ka ripple, hiki ke hoʻemi ʻia me ka hoʻohana ʻana i ʻelua capacitors i ka like.
Ka pale ʻana i nā capacitors electrolytic
I kekahi manawa inā hoʻohana ʻia kahi capacitor electrolytic lōʻihi, ʻike pinepine ʻia ua haki ka capacitor electrolytic. He aha ke kumu o kēia? ʻO kaʻoiaʻiʻo, he hewa ka manaʻo ʻaʻole lawa ka maikaʻi o ka capacitor electrolytic.
No ka mea, ʻike mākou ma ka mana AC o ka mana kūlanakauhale, loaʻa pinepine nā piʻi uila kiʻekiʻe ma muli o ka uila. ʻOiai ua hoʻokō ʻia nā hana pale uila he nui no nā uila uila ma nā pā uila nui, ʻaʻole hiki ke ʻike ʻia ka leakage ʻupena i nā poʻe noho ma ka home.
No nā luminaires LED, inā hoʻohana ʻia lākou e nā kumu nui, pono ʻoe e hoʻohui i nā ana anti-surge i nā pahu hoʻokomo nui i ka mana o ka luminaire, me nā fuses a me nā pale pale overvoltage, i kapa ʻia ʻo varistors. E pale i nā ʻāpana aʻe, inā ʻaʻole e hoʻopaʻa ʻia nā capacitors electrolytic lōʻihi e ka puʻu uila.