74FCT3807DQGI8 ic cihp integrated circuit electronics kūʻai wela i nā mea hou a kūʻai maoli hoʻokahi wale nō wahi kūʻai aku i ka lawelawe bom

1.ʻO LED kahi ʻano hou o ka mīkini kumu kukui semiconductor maikaʻi loa.Hoʻohālikelike ʻia me nā kumu kukui ʻē aʻe, loaʻa ka LED i nā mea maikaʻi loa i nā kukui automotive a loaʻa kahi manaʻo noi ākea.Hoʻohana ʻia nā ʻano like ʻole o ka hoʻohui ʻana i nā LED ma ke ʻano a me ka hoʻohālikelike ʻana e hana i nā arrays LED e hoʻokō i nā koi o ka ikaika o ke kukui automotive.

Me ka hoʻomaikaʻi ʻana o ka ʻenehana a me ka hoʻomohala wikiwiki ʻana o ka hoʻokele waiwai, ua hoʻohana nui ʻia nā huahana LED i ke ola o nā kānaka.ʻO ke kenekulia 21, ua hōʻea ka hana LED a me ka mākeke mākeke i kahi pae i ʻike ʻole ʻia, ʻo ka mākeke noi nui loa o LED nā wahi like ʻole o ka hōʻike ʻana, nā ʻano like ʻole o nā kelepona paʻalima, a pēlā aku.Eia kekahi, he kuleana koʻikoʻi nā LED i nā alanui, nā kukui hoʻolālā, nā mea hoʻonaninani o loko, a me nā wahi ʻē aʻe he nui.Me ka hoʻomohala wikiwiki ʻana o ka ʻoihana kaʻa, ua hoʻohana nui ʻia nā kaʻa kaʻa alakaʻi LED i nā uila uila hou, a ua hoʻololi mālie ʻia nā kumu kukui kaʻa mua e like me nā kukui.I ka manawa like, he kiʻekiʻe ka luminous o ka LED, he manawa pane pōkole (pane wikiwiki), ʻano paʻa (liʻiliʻi liʻiliʻi), ola lōʻihi o ka lawelawe ʻana, a me nā ʻano ʻē aʻe, e hoʻohana ʻia ia i nā kukui automotive a he ikaika hoʻi ka hoʻokae kala a me ka anti. -ʻano ʻālohilohi.Eia nō naʻe, ma muli o nā palena o nā kumu like ʻole, loaʻa nā LED i kekahi mau hemahema, pono e hoʻomau i ka hoʻomaikaʻi ʻana i ka ʻenehana LED, e hoʻokō pono i nā pono o ka uila uila.

2.ʻO LED kahi diode semiconductor light emitting diode, i hana ʻia me kekahi mau semiconductor.ʻO ka LED he kumu māmā me ke kū'ē maikaʻi i ka haʻalulu a me ka haʻalulu, ua paleʻia e kahi pāpale epoxy resin, liʻiliʻi loa ke kumu, aʻo ke kumu he PN junction core, no laila, aia nāʻano o kahi hui PN,ʻo ia hoʻi ka hoʻokele mua. , Reverse cut-off a overvoltage breakdown, etc. I kekahi mau mea kūikawā Ma lalo o kekahi mau kūlana kūikawā, hiki keʻikeʻia hoʻi he kukui kukui.

3.Hoʻokaʻawale ʻia nā kaʻa kaʻa alakaʻi LED i ʻelua ʻano kaʻa: ka uila uila mau a me ka hoʻokele o kēia manawa.Ma muli o ke ʻano hoʻokele kaʻa mau o kēia manawa, i ke ʻano o ka PN junction-based, hiki ke lilo i pilina exponential e hōʻike i ka volta LED a me nā loli o kēia manawa, no laila ʻoi aku ka nui o ka hoʻohana ʻana.ʻO ke ala hoʻokele mau-voltage maʻamau ka hoʻohana ʻana i ka resistive capacitance step-down a i ʻole transformer step-down kānana, ka hoʻohana ʻana i nā diodes regulator voltage a i ʻole ka hoʻololi ʻana i ke ʻano mana lako, i ka mana LED, akā aia nā hiʻohiʻona kukui LED i kēia manawa. loli mau ma lalo o ka hopena pili.ʻO ka mea hoʻoponopono laina i ke ʻano kaʻa kaʻa mau i kēia manawa he ʻelua ʻano: parallel a me ka moʻo, ʻo ke kumu ka mana triode a i ʻole MOSFET e hana ana i ka laina laina ma ke ʻano he resistor hiki ke hoʻololi i ka ukana.ʻO ka volta a me ke au ma nā ʻaoʻao ʻelua o ka LED ʻaʻole ia he pilina laina, ʻaʻole hiki ke hoʻohana pololei ʻia e kahi puna uila, a pono e kaupalena ʻia ma ke kaupalena ʻana i ka manawa e pale ai i ka nui o kēia manawa a pale i ka pōʻino i ka LED.ʻAʻole kūlike ka ʻālohilohi LED a me ka wā ʻAʻole kūlike ka flux kukui i kēia manawa, piʻi ka piʻi ʻana o ka māmā me ke ʻano o kēia manawa, lawe lākou i nā degere like ʻole o ka mana uila, kū i loko, a ʻaʻole like nā mea pale, no laila ʻaʻole hiki ke hoʻohana. pololei i ka like like.E koho i ka pono a me ke kūpono kaʻa 'ano pono e noonoo i ka palapala noi a me kona functionality rationality, no kēlā me kēia 'ano o ke ano, e pono e koho ma ka hoʻololi mana lako mana mode, ka palapala noi maʻamau ka PFM, PWM mode, a me ka paheʻe kiʻiʻoniʻoni mana. He mea maʻalahi a maʻalahi hoʻi ka PWM control mode structure, hiki ke mālama i kahi alapine paʻa i ka hana, akā pono nō hoʻi e noʻonoʻo mai ka manaʻo e mālama i ka ikehu a me nā kuhikuhi ʻē aʻe, e hoʻomaikaʻi i ka ʻōlinolino koke o LED, a hoʻemi i ka hoʻohana ʻana i ka mana LED.