Maupangiri ogwiritsa ntchito kutulutsa kwa 3.3V mu mndandanda wa AMS1117 ndi LM1117 ndi zinthu zina zotsika mtengo

Zogwirizana pdf ndi zambiri

Mafotokozedwe Akatundu

AMS1117-3.3 ndi LM1117MPX-3.3 ndi atatu-osachiritsika linanena bungwe otsika-kusiya olamulira liniya ndi linanena bungwe panopa 1A. Pamene panopa ndi 1A, ake pazipita voteji dontho ndi 1.3V okha. Chifukwa cha ntchito yake yabwino, imagwiritsidwa ntchito kwambiri.

mbali yaikulu

Kutsika kwamagetsi ndi 1.2V kokha pa 1A yotulutsa pakali pano, yomwe ili ndi zochepetsera pakali pano, ntchito yotentha kwambiri, kutulutsa kolondola kwamagetsi kumatha kufikira 1.5%.

Malangizo Ogwiritsira Ntchito

Popeza mphamvu yake yolowera yayikulu siyingadutse 18V, ndimayesetsa kuti izikhala pansi pa 14V mothandizidwa ndi batri. Ngati timalumikiza kumapeto kwa magetsi, nthawi zambiri amalimbikitsidwa kuti magetsi azitha kuwongolera pafupifupi 12V. Otsatirawa ndi chithunzi chojambulidwa kwambiri. Ma capacitors kumapeto onse a chithunzicho sanalimbikitsidwe kuti asachotsedwe. Wolemba adayesapo, pamalo okhazikika kwambiri olowetsera DC, ma capacitor kumapeto kwa zolembedwako amatha kusiyidwa, koma tikulimbikitsidwa kuti tisunge bata lonse. Kuphatikiza apo, mphamvu ya capacitance ya capacitor imatha kusintha malinga ndi momwe amagwiritsidwira ntchito, koma siyingakhale yocheperako kuposa 10μF.

Vuto lapadera

Mukalumikizidwa kumapeto kwakumbuyo kwa magetsi ena, nthawi zina ntchito imakhala yosakhazikika. Ngati palibe cholakwika pakazunguliridwe kazitsulo kumapeto kumapeto, ndiye kuti tifunika kuyika pafupifupi 20Ω pakati pakumapeto kwa magetsi ndikusinthira kwa AMS1117-3.3. Pambuyo polumikizidwa, dera lonselo limatha kugwira ntchito bwino.

Njira yotsika mtengo

Chifukwa chogwiritsidwa ntchito ku China ndichachikulu kwambiri, chifukwa chake ma brand aku China apanganso zinthu zomwe zimakhala ndimapangidwe omwewo ndi ma CD. Chifukwa kupanga ku China kuli ndi zabwino zambiri pamtengo, mitengo yazogulitsa zaku China ndiyotsika kwambiri. Mtengo monga tsiku lokumbukira nkhaniyi, LM1117MPX-3.3NOPB1000Pcs, ndi $ 0.15624 ku www.digikey.com ndi $ 0.468 ku www.mouser.com. Mtengo wa mtundu waku China ndi $ 0.08. Ngati mukufuna kudziwa zambiri zazinthu zina mndandanda womwewo, chonde lemberani favkb@outlook.com.