Pcb Mount Transformersyog cov khoom tseem ceeb hauv ntau yam khoom siv hluav taws xob, muab cov khoom siv tsim nyog lossis hloov dua siab tshiab. Mounting cov kev hloov pauv no ntawm cov ntawv luam tawm hluav taws xob (PCBs) yuav tsum muaj qhov tseeb thiab kev ua raws li kev ua tau zoo tshaj plaws thiab kev ntseeg tau. Ntawm no yog ib phau ntawv qhia qhia dav dav txog yuav ua li cas rau Mount Transformers ntawm PCBs tau zoo.
1. Npaj theem
Feem Tiv Thaiv: Xaiv Transformers tshwj xeeb tsim rau PCB Mounting nrog tsim nyog voltage ntsuas thiab taw ko taw motasibility
Kev ntsuas cua sov: Xam pom yuav tsum kub dissipation siv:
Winding tiv taus (RDC)
Cov yam ntxwv ploj
Ambient Kub Yuav Tsum Tau
Neeg kho tshuab pov thawj:
Tshaj tawm Mounting Qhov Txheej Txheem
Qhia tus lej PIN sib tw phim pcb teeb
Kuaj cov kev cai kom tau txais (feem ntau 3-5 mm los ntawm lwm yam)
2. Mounting cov tswv yim
Los ntawm-lub mounting (tht):
Ntxig ua los ntawm plated qhov
Thov 60\/40 Luas-Tin Solder ntawm 300-350 degree
Khov 1. {{5-2 nkauj txhuas kev protrusion rau cov neeg kho tshuab ntxhov siab
Nto Mount (SMD) Txhim Kho:
Thov muab tshuaj txhuam muab siv STENCIL (0. {{}}. 15mm thickness)
Siv mus rau-thiab-qhov chaw machine nrog ± {2}}. 05mm qhov tseeb
Refow Profile:
Preheat: {{1-3 degree \/ sec rau 150-180 degree
Soak: {60-90} vib nas this
Refow: are {20-40} sec saud 217 degree (ncov 240-250 degree)
Cov kev txiav txim siab tshwj xeeb:
For high-voltage transformers (>1kv):
Ua kev nkag siab deb dua lossis sib npaug rau 8 hli \/ kv
Siv qhov sib cais ntawm pcb
Rau cov ntawv thov siab tam sim no:
Teeb Meem Thermal vias
Siv 2oz tooj liab yam tsawg kawg
3. Post-installation pov thawj
Kev Ntsuas Hluav Taws Xob:
Kuaj xyuas ntxiv (ω-meter)
Hi-lauj kaub xeem (2x ntsuas voltage + 1 kv)
Hloov cov txheeb xyuas tseeb (± 3% kam rau)
Kev Tshuaj Xyuas Txhua Neeg:
Kev tshuaj xyuas kev kuaj xyuas rau cov tshuab tsis sib xws
Push-rub cov kev xeem (1kgfft yam tsawg kawg nkaus rov qab)
Kev co kev xeem (10-500 hz, 5g nrawm)
4. Saib xyuas thiab daws teeb meem
Cov Teeb Meem Ntau:
Solder koom sib nraus tawg (chaw nyob nrog txoj hlua nyem)
Thermal khiav tawm (txhim kho airflow lossis watchsinking)
EMI Kev cuam tshuam (kev tiv thaiv shielding)
Kev tiv thaiv kev ntsuas:
Kev Tiv Thaiv Txheej Txheem Kev Tiv Thaiv Kev Nyab Xeeb
Periagic thermal imaging
Cov ntawv thov varnish rau cov windings hauv qhov chaw tsheb loj
5. Kev Lag Luam Kev Lag Luam Ua Raws
Xyuas kom meej trherence rau:
IPC -2221 (hom pcb tsim qauv)
IEC 61558 (Kev nyab xeeb ntawm Cov Hluav Taws Xob Hluav Taws Xob)
UL 5085 (Kev Tswj Khoom)
Hauv kev xaus, cov kev hloov pauv nce ntawm PCBs yuav tsum tau txais kev npaj ua kom ceevfaj heev, ua tiav, thiab tswj kev nyab xeeb. Los ntawm kev ua raws li cov lus qhia no, koj tuaj yeem ua tiav kev ua haujlwm zoo thiab kev ntseeg tau, ua kom koj cov khoom siv hluav taws xob ua haujlwm tau zoo thiab nyab xeeb.