nkhani

Ma inductors a SMD ndi amodzi mwazitsulo zamagalasi a uranium resistors. Common mode inductance, yomwe imadziwikanso kuti common mode choke, nthawi zambiri imagwiritsidwa ntchito kusefa ma siginecha amtundu wamagetsi pamagetsi osinthira makompyuta. Pamapangidwe a board board, wojambulira wamba wamba amagwiranso ntchito ngati fyuluta ya EMI kupondereza mafunde amagetsi opangidwa ndi mzere wothamanga kwambiri kuti utuluke kunja. Ndi chopinga chopangidwa ndi chisakanizo cha ufa wachitsulo ndi ufa wa galasi wa uranium, womwe umasindikizidwa pazithunzi zamphamvu za SMD pagawo laling'ono. Kunyowa kwabwino, kukana kutentha kwambiri, kutentha kocheperako. Kugwiritsiridwa ntchito kwa luso lamakono lachidziwitso kwakhala kofala kwambiri, ndipo gawo la zinthu zamagetsi zomwe zasonkhanitsidwa ndi SMT zadutsa 90%. dziko langa liyenera kulowa mu luso la SMT kuyambira 1980s. Ndi chitukuko cha zida zazing'ono zopangira ma SMT, kuchuluka kwa kugwiritsa ntchito magulu a SMT kwakulitsidwa. Ndege, mlengalenga, zida, zida zamakina ndi magulu ena amagwiritsanso ntchito SMT kupanga timagulu tating'ono tating'ono tazinthu zamagetsi kapena magawo.

Resistors payekha amatchedwa resistors m'moyo watsiku ndi tsiku. Chinthu chochepetsera pakali pano cholumikizidwa ndi resistor mudera. Wotsutsa ali ndi mtengo wokhazikika wa zikhomo ziwiri ndipo amagwiritsidwa ntchito kuchepetsa zomwe zikuyenda kudzera munthambi yomwe imalumikizidwa. Kutsutsa komwe mtengo wake wotsutsa sungathe kusinthidwa umatchedwa kutsutsa kokhazikika. Omwe ali ndi kukana kosinthika amatchedwa potentiometers kapena variable resistors. Kukaniza kwenikweni ndikofanana, ndiko kuti, kwakanthawi kochepa kudzera mu kukana kumayenderana ndi voteji yomwe imagwiritsidwa ntchito. Kusintha kwa resistor kwa voltage divider. Cholumikizira chimodzi kapena ziwiri zachitsulo zosunthika zikanikizeni mwamphamvu pa chopinga chowonekera. Malo olumikizana amatsimikizira kukana pakati pa mapeto onse a resistor ndi kukhudzana.

Mawonekedwe azinthu za opanga magetsi a SMD
Kukula kochepa ndi kulemera kochepa; · Oyenera reflow soldering ndi wave soldering; · Galimotoyo imatha kukhala yamphamvu komanso yolimba; · Mtengo wotsika mtengo, wofananira ndi zida zoyika zogwira; · Mkulu wamakina mphamvu ndi mkulu pafupipafupi makhalidwe. Pofuna kuteteza mawaya, malupu ndi ma coil kuchokera kumagetsi akunja ndikuchepetsa kusokoneza kwa gawo lamagetsi lopangidwa ndi dera pazinthu zina, njira zotchingira maginito kapena zotchingira zamagetsi nthawi zambiri zimatengera.
Ndi zinthu ziti zomwe zimapangidwa ndi ma inductors amagetsi a SMD?
SMT resistors amapangidwa mosiyana ndi izi:
Zomwe zimayambira ndi alumina, ndipo deta yokana ndi ruthenium oxide
1. Gawo laling'ono
2. Kukana phala
3. Nenani zambiri
4. Deta yabwino yotsogolera ndi deta yotsogolera mbali
5. Kukonzekera koyambirira kwa galasi G16. Kukonzekera kwachiwiri kwa galasi G27.