1. Kodi kukana ndi chiyani
Ntchito yoyimitsa mphamvuyi imatchedwa kukana.Chipangizo chokhala ndi mtengo wina wotsutsa chimatchedwa resistance element.The R (Resistor) amafotokozedwa mu Chingerezi.
2. Chigawo chotsutsa
Chigawo choyambirira cha ohm Ω mayunitsi ake owonjezera ali ndi zikwi o K Ω megohm M Ω
3. Njira yosinthira ya mayunitsi oyezera:
1m Ω = 10 3K Ω = 106Ω
4. Mtundu ndi kapangidwe ka kukana:
4.1 Gulu lazinthu:
CF: Kaboni Kanema
TF: Kanema Wakuda
MF: Metal Film
Wirewound
4.2 Gulu potengera dongosolo:
Kukana kokhazikika.(R)
Semi-adjustable resistance.(S-VR)
Kukana kosinthika (VR)
4.3 Gulu ndi mawonekedwe:
Mtundu mphete kukana
Kukana kwa mapepala.
kupatula
4.4 Gulu motengera mphamvu:
1/16W, 1/8W, 1/4W, 1/2W, 1W, 2W, 3W… Ndi zina zotero.
Mphamvu zimatha kusiyanitsa ndi mawonekedwe ake ndi kukula kwake.Voliyumu ikakula, mphamvu zake zimakhala zazikulu.
5. Makhalidwe akuluakulu a kukana:
Zigawo zazikulu zaukadaulo za kukana zimaphatikizapo kukana mtengo, mphamvu zovoteledwa, zolakwa zosiyanasiyana ndi zina zotero.
6. Njira yoyimira kukana:
Makhalidwe otsutsa ndi zolakwika za resistors nthawi zambiri zimatha kuimiridwa ndi zizindikiro zadijito zomwe zimasindikizidwa pa resistors kapena mphete zamitundu.Mawerengero okhawo akufotokozedwa pansipa.
Kugwiritsa ntchito manambala atatu:
Zotsutsa za SMT zokhala ndi cholakwika cha 5% nthawi zambiri zimasindikizidwa pa chotsutsa ndi nambala ya manambala atatu, ndi manambala awiri oyamba omwe amayimira manambala ofunikira ndipo manambala achitatu akuyimira kuchuluka kwa 10n.
Imayimiridwa ndi manambala atatu:
Zotsutsa zolondola nthawi zambiri zimayimiridwa ndi manambala anayi, manambala atatu ofunikira komanso mphamvu yachinayi 10n.
zosakwana 10 Ω kukana ndi chilembo "R" ndi Nambala ziwiri:
5R6 = 5.6 Ω 3R9= 3.9 Ω R82 = 0.82Ω
Kupatula mtundu wa SMD:
Kawirikawiri amawonetsedwa ndi RP × ×, mwachitsanzo, 10K OHM 8P4R amatanthauza kuti zikhomo za 8 zimapangidwa ndi 4 odziletsa okha, ndipo mtengo wotsutsa ndi 10K OHM kuchotsedwa.
NeoDen imapereka mayankho athunthu a mzere wa SMT, kuphatikiza uvuni wa SMT reflow, makina opangira magetsi, makina osankha ndi malo, makina osindikizira a solder, uvuni wa Reflow, PCB loader, PCB unloader, chip mounter, SMT AOI makina, SMT SPI makina, SMT X- Makina a Ray, zida zolumikizirana za SMT, Zida zopangira PCB SMT zida zosinthira, ndi zina zilizonse makina a SMT omwe mungafune, chonde titumizireni kuti mumve zambiri:
Malingaliro a kampani Hangzhou NeoDen Technology Co., Ltd
Webusaiti:www.smtneoden.com
Imelo:info@neodentech.com
Nthawi yotumiza: Nov-26-2020