- Ma ke Ana Voltage
ʻO ka mea mua e hōʻoia inā he maʻamau a ʻaʻole paha ka volta o kēlā me kēia pihi mana chip, a laila e nānā inā he maʻamau a ʻaʻole paha ka volta kuhikuhi like ʻole, ma kahi o ke kiko o ka volta hana. No ka la'ana, he 0.7V ka volta huiko'o ma'amau, a he 0.3V a emi mai paha ka volta hui 'ana o ka BE. darlington tube, etc.), hiki ke wehe ʻia ka hui ʻana o BE.
2. hōʻailona hōʻailona
E hōʻailona i ka hoʻokomo, a laila ma ka huli hoʻi e ana i ka nalu ma kēlā me kēia wahi, e nānā inā maʻamau, e ʻike i ka wahi hewa mākou i kekahi manawa e hoʻohana i ke ala maʻalahi, me kahi forceps ma ka lima, no ka laʻana, e hoʻopā i nā pae āpau o ka hoʻokomo, ka ʻaoʻao ʻaoʻao hoʻopuka, ke kaapuni hoʻonui e like me ke wikiō leo e hoʻohana pinepine ʻia (akā, e hoʻomanaʻo ʻaʻole hiki ke hoʻohana i ka pā wela a i ʻole ka pōʻai uila kiʻekiʻe, ke hoʻohana i kēia ʻano, inā ʻaʻole hiki ke alakaʻi i ka haʻalulu uila) inā hoʻopā ma mua o ka pae. pane, a hoʻopā ma hope o ka pae 1, a laila ka pilikia ma ka pae mua, pono e kālele ana i ka nānā
ʻO nā ala ʻē aʻe e ʻike ai i ka PCB hemahema
Nui nā ala ʻē aʻe e ʻimi ai i nā wahi pilikia, e like me ka ʻike, lohe, honi, hoʻopā, etc.
1. "E ʻike" ʻo ia hoʻi ka ʻike inā loaʻa ka pōʻino mechanical i ka ʻāpana, e like me ka haki, ʻeleʻele, deformation, etc.;
2.“Listen” ʻo ia ka hoʻolohe ʻana i ke kani maʻamau o ka hana, e like me ke kani ʻole ʻana o kekahi mau mea i loko o ke apo, ʻaʻole kani ka leo o ka wahi a i ʻole ke kani ʻana, a pēlā aku;
3. "Smell" ʻo ia ka nānā ʻana i nā mea ʻala, e like me ka ʻala ʻana, ke ʻala o ka capacitor electrolyte, a me nā mea ʻē aʻe, i kahi limahana mālama uila ʻike, i maʻalahi loa i kēia mau ʻala;
4. ʻO ka "pā" ʻo ia ka hoʻāʻo ʻana i ka mahana o ka hāmeʻa ma ka lima e ʻike inā he mea maʻamau, e like me ka wela a i ʻole ke anu.
ʻO kekahi mau mana mana, inā wela lākou i ka wā e hana ai, inā hoʻopā kekahi i ke anuanu, hiki ke hoʻoholo ʻia ʻaʻole ia e hana. Akā inā wela loa ma kahi ʻaʻole pono a wela paha ma kahi e pono ai, ʻaʻole pono ia. ʻO ka transistor mana maʻamau, chip regulator voltage, a me nā mea ʻē aʻe, e hana ana ma 70 degere ma lalo ʻaʻohe pilikia. He aha ke ʻano o 70 degere? Inā ʻoe e kaomi i kou lima ma luna, hiki iā ʻoe ke paʻa iā ia ma mua o ʻekolu kekona, ʻo ia hoʻi, aia ka mahana ma lalo o 70 degere.