Nā hewa maʻamau a me ka mālama ʻana i nā lako mana

ʻO ka hoʻololi ʻana i nā lako mana kekahi o nā mea nui o nā hōʻike LED. No laila, pono mākou e hoʻomaopopo i nā hewa maʻamau a me ka mālama ʻana i nā lako mana

Ka nānā 'ana i nā hewa ma'amau o nā lako mana switching

(1) Puhi ka fuse

ʻO ka maʻamau, hōʻike ka blownfuse i kahi pilikia me ka uwea kūloko o ka lako mana.

a. Kaapuni pokole: Aia ka hewa kaapuni pokole ma ka aoao laina, a ua haki koke ka fuse;

b.. Overload: ʻOi aku ka nui o ka ukana ma mua o ka manawa i helu ʻia o ka fuse, a ua wela ka fuse a puhi ʻia no ka manawa lōʻihi (maʻamau 1.1 mau manawa ma mua o ka manawa i helu ʻia a puhi ʻia no 1 hola)

c. Pulse: i ka wā i hoʻomaka ai ke kaapuni a i ʻole ka paʻa ʻole o ka mana, ʻo ka ʻauwai nui hikiwawe ke kumu e hemo ai ka fuse;

(2) ʻAʻohe mea hoʻopuka uila DC a i ʻole ka hoʻopuka uila ʻole

Inā paʻa ka fuse, ʻaʻohe puka o ka volta DC ma nā pae āpau ma lalo o nā kūlana ukana. ʻO kēia pilikia ma muli o nā kumu aʻe: ka kaapuni ākea a me ka pōkole pōkole i ka lako mana, ka hemahema o ka overvoltage a me ka overcurrent protection circuits, ka hemahema o ka mana kōkua, ʻaʻole hana ka oscillation circuit, a me ka diode therectifier i ka kānana rectifier kiʻekiʻe. ʻO ka haʻihaʻi kaapuni, leakage o nā capacitors kānana, etc.

 

(3) ʻAʻole hiki ke hoʻouka i ka mana

ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa o ka lako mana he hewa maʻamau, ka mea maʻamau i loaʻa i nā lako mana kahiko a lōʻihi paha. ʻO ke kumu nui ʻo ka ʻelemakule o nā ʻāpana like ʻole, ka hana paʻa ʻole o ka paipu hoʻololi, a me ka nele o ka hoʻomaha manawa. Pono mākou e nānā inā hoʻohua ka diode Zener i ka wela a kahe, ka diode rectifier isdamaged, poino ka capacitor kānana kiʻekiʻe, etc.

Manaʻo kōkua:

1. Ke hoʻomaka ʻole ka haʻalulu ʻana o ka mana hoʻololi, pono mākou e nānā inā pololei ke alapine hoʻololi, inā ua ālai ʻia ke kaapuni pale, inā ua OK ke kaapuni voltagefeedback a me ka kaapuni manaʻo o kēia manawa, a inā ua haki ka switchtube, etc.

2. Hoʻomaka ka mea hoʻololi o ka mana hoʻololi a hoʻopuka i kahi kani "swoosh swipe", ma muli o ke alapine hoʻololi hewa.

3. Inā 'ālohilohi ka hōʻailona mana o ka puka o ka mana hoʻololi, he pōkole pōkole ia ma ka ʻaoʻao lua.