Kev soj ntsuam xyuas cov khoom rau phau ntawv soldering nrog hluav taws xob soldering hlau
(1) Xyuas seb puas muaj kub taub hau
Txuas cov hlau nplaum rau hauv lub qhov (socket) 3-5 feeb ua ntej mus ua haujlwm txhua hnub. Xyuas seb cov hlau puas yog kub. Yog tias nws tsis kub, ua ntej xyuas seb lub qhov (socket) puas yog ntsaws rau hauv zoo. Yog tias nws txuas rau, yog tias nws tseem tsis tau kub, ceeb toom rau tus thawj tswj tam sim ntawd. Tsis txhob disassemble lub soldering hlau ntawm lub siab, cia nyob ib leeg kov lub taub hau soldering ncaj nraim nrog koj txhais tes.
(2) Hloov kho cov lus qhia soldering raws sijhawm
Cov lus qhia soldering uas yog oxidized, bumpy lossis muaj hooks yuav tsum tau hloov:
1. Ua kom muaj txiaj ntsig zoo thaum tshav kub kub ua haujlwm;
2. Xyuas kom zoo ntawm cov khoom yuav tsum tau welded.
Yog hais tias ib tug tshiab soldering hlau taub yog hloov, cov xim tu yuav tsum tau muab tshem tawm tom qab cua sov, thiab tin nkawm yuav tsum tau ntxiv tam sim ntawd.
Lub soldering hlau yuav tsum tau ntxuav ua ntej soldering. Thaum cov hlau tsis siv ntau tshaj 5 feeb, lub hwj chim yuav tsum tau muab tua.
(3) Xyuas seb lub sponge desoldering puas muaj dej thiab huv
Yog tias tsis muaj dej, thov ntxiv cov dej kom tsim nyog (tus nqi tsim nyog txhais tau hais tias cov dej ntws tawm thaum lub sponge nias rau ib nrab ntawm nws cov tuab tuab.
Txoj kev ua haujlwm: Tom qab cov av noo xav tau yog tias daim txhuam cev ntub dej tag, tuav hauv xib teg ntawm koj txhais tes thiab kaw koj cov ntiv tes ib txwm muaj.
Thaum siv hluav taws xob soldering hlau rau phau ntawv soldering, daim txhuam cev siv yuav tsum huv. Cov sponges qias neeg uas muaj cov khoom siv hlau los yog cov ntaub txhuam hniav uas muaj cov tshuaj sulfur yuav ua rau cov hlau nplaum hlau puas.
(4) Txawm hais tias tib neeg lub cev thiab cov hlau soldering muaj kev ntseeg siab, thiab seb tib neeg lub cev hnav lub nplhaib electrostatic.
Cov diodes puas tuaj yeem txuas nrog hauv 48V DC soldering hlau?
Lub 48V DC soldering hlau tsis tuaj yeem txuas diodes hauv series. Ib tug me me resistor yuav tsum tau txuas rau hauv series los faib cov voltage. Diodes yog siv nyob rau hauv rectifiers thiab tsis muaj ntau voltage faib nyhuv. Resistors yog cov khoom siv hluav taws xob tshwj xeeb siv rau kev faib hluav taws xob. Ua ntej, siv ib lub multimeter los ntsuas qhov ntsuas tus nqi ntawm cov hlau soldering. Tom qab ntawd txuas tus resistor ntawm tus nqi sib npaug hauv series raws li tus nqi tiv thaiv no. Tom qab ntawd qhov hluav taws xob faib rau cov hlau soldering yuav raug txo mus rau 1/2 ntawm tus nqi qub. Yog tias qhov kub ntawm cov hlau soldering tsawg dhau, nws yuav tsis txaus. , koj tuaj yeem tshem tawm qhov hluav taws xob no thiab rov txuas dua hauv cov kab hluav taws xob nrog tus nqi tsis kam ntawm 1/2 ntawm qhov resistor, kom qhov hluav taws xob faib rau cov hlau soldering yog 2/3 ntawm qhov qub. Los ntawm kev sim rov ua dua, koj tuaj yeem pom koj qhov kev pom zoo ntawm cov nqi tiv thaiv.
The voltage of the forward diode in a 48-volt DC appliance will be reduced by about 0.7 volts, and the reverse series connection will turn off the power supply. Note that the voltage of the diode in series should be >65 volts, and the forward current should be >2 npaug ntawm kev ua haujlwm tam sim no.
