AVT3172B - Chowongolera chotsitsa utsi
Aliyense amene amachita soldering ngati chizolowezi kunyumba amadziwa zosasangalatsa komanso nthawi yomweyo zoopsa ndi mwachindunji mpweya solder fumes. Ndizowona kuti pali njira zambiri zopangira fakitale zopangira utsi pamsika, koma kugwiritsa ntchito kwawo nthawi zambiri kumakhala kovuta. Yankho loperekedwa limakupatsani mwayi wosinthira bwino liwiro la mafani malinga ndi zosowa, chifukwa chomwe mutha kuchepetsa kwambiri phokoso lomwe limaperekedwa ndi wothamanga.
Zoonadi, lingaliro loterolo silingalowe m'malo mwa hood yabwino yotulutsa mpweya, ndipo njira yabwino kwambiri komanso yothandiza kwambiri ndikuphatikiza fani ndi mpweya wabwino. Komabe, akuyendera limodzi ndi ntchito katiriji mpweya fyuluta ndi kuvomerezedwa wokhazikika mpweya wabwino wa chipinda adzakhala kwambiri kuchepetsa chiopsezo mwachindunji pokoka mpweya solder utsi. Kuphatikiza apo, dongosolo lomwe likuwonetsedwa lingagwiritsidwe ntchito nthawi zambiri - mwachitsanzo, pamasiku otentha ndilabwino ngati wokonda patebulo losinthika.
Kufotokozera kamangidwe
Chithunzi chojambula cha dera chikuwonetsedwa mkuyu. 1. Ichi ndi ntchito yachikale ya LM317 voltage regulator. Gawoli liyenera kukhala loyendetsedwa ndi mphamvu ya pulagi ya 12V yolumikizidwa ndi socket ya IN. Diode D1 imateteza dongosolo ku polarity reverse ya voteji athandizira, ndi capacitors C1-C4 fyuluta voteji. Ndi zinthu zomwe zikuwonetsedwa pachithunzichi, kusintha kosinthika kumakupatsani mwayi woyika ma voliyumu aliwonse kuchokera pa 2 mpaka pafupifupi 11 V pazotulutsa, zomwe zimapereka kuwongolera mwachangu kwa fani yolumikizidwa ndi OUT. Potulukira.
Kuyika ndi kusintha
Kusonkhana kwa dongosololi ndikwapamwamba ndipo sikuyenera kuyambitsa mavuto. Tiyeni tiyambe ndi kugulitsa zinthu zing'onozing'ono mu bolodi, ndikumaliza ndikuyika heatsink ndi U1 system ndi potentiometer. Ikani chofanizira kumapeto kwenikweni, pogwiritsa ntchito waya wamtali wamtali wokutidwa ndi siliva. Mabowo angapo okwera okhala ndi munda wamkuwa wotseguka amagwiritsidwa ntchito pa izi. Njira yopangira ma fan ikuwonetsedwa muzithunzi. Mbaleyo imasinthidwa kuti ikhale ndi mafani a 120mm ndi makulidwe apamwamba a 38mm. Mayendedwe oyika mafani ndi osankha, kutengera zosowa ndi zomwe akufuna kugwiritsa ntchito chipangizocho.
Onaninso:
