Yuav ua li cas siv lub multimeter, vuam
Yuav ua li cas siv lub multimeter
Thaum ntsuas lub capacitance, lub capacitance yuav tsum luv luv thiab tawm.
Thaum ntsuas tam sim no, disconnect lub Circuit Court ua ntej.
Qhov kev tawm ntawm qhov thaiv yog suav tias yog nyob rau yog tias nws qis dua 70 ohms
Tin strip
Thaum lub sij hawm soldering txheej txheem ntawm tus pin-dense SMD Cheebtsam, nws yog ib qho yooj yim mus ua ib tug solder ntau dhau los ua ib tug luv luv Circuit Court ntawm pins. Siv ib daim kab xev nplaum rau "absorb" cov khoom siv ntau dhau.
Cov txheej txheem ntawm kev siv cov tin sawb yog yooj yim heev: siv txiab txiav ib feem me me ntawm lub tin sawb, kub nws nrog ib tug soldering hlau rau dip lub nto nyob rau hauv ib co rosin, ces clamp nws nrog tweezers thiab muab tso rau hauv lub ncoo, thiab ces nias rau ntawm lub tin sawb nrog ib tug hluav taws xob soldering hlau, thaum lub tin sawb tig silvery dawb, nws txhais tau hais tias lub solder twb "sucked". Ceev faj tsis txhob kov lub tin sawb nrog koj txhais tes thaum nqus cov tin kom tsis txhob hlawv.
Ua ntej, poob rau pem hauv ntej kawg ntawm lub tin sawb nrog rosin, ces muab lub tin sawb nrog rosin nyob rau hauv lub solder sib koom tes uas yuav tsum tau desoldered, thiab ces muab cov hluav taws xob soldering hlau rau ntawm lub tin sawb kom sov lub solder sib koom ua ke, thiaj li hais tias tom qab. lub solder melts Nws yuav tsum sucked tam sim ntawd los ntawm lub tin sawb mus cuag lub hom phiaj ntawm desoldering.
rosin
Qhib lub thawv rosin thiab poob lub zog ntawm cov hlau nplaum rau ntawm nws. Yog tias cov tub ntxhais cov khoom siv tau siv rau kev sib tsoo, nws yuav tsum tau ntxiv qee cov rosin. Yog tias rosin tin soldering hlau yog siv (flux yog qhwv hauv cov tub ntxhais hlau), rosin yuav tsis siv.
