Cov lus qhia rau siv 3.3V tso zis rau hauv AMS1117 thiab LM1117 series thiab cov khoom lag luam qis dua

Muaj feem xyuam pdf thiab cov ntaub ntawv

cov khoom lag luam qhia

AMS1117-3.3 thiab LM1117MPX-3.3 yog peb qhov tso tawm hluav taws xob qis tawm cov tso hluav taws xob nrog cov tso tawm hluav taws xob nrog qhov tso tawm tam sim no ntawm 1A.Thaum qhov tam sim no yog 1A, nws qhov hluav taws xob siab tshaj tsuas yog 1.3V. Vim tias nws cov txiaj ntsig zoo, nws tau siv dav.

lub ntsiab tseem ceeb

Qhov voltage tso tawm tsuas yog 1.2V ntawm 1A tso zis tawm tam sim no, nrog qhov kev txwv tam sim no, kev tiv thaiv kev ua haujlwm ntau dhau, thiab cov zis hluav taws xob muaj tseeb txog 1.5%.

Siv Cov Lus Qhia

Txij li nws qhov siab tshaj tawm voltage tsis tuaj yeem tshaj 18V, Kuv sim ua kom nws qis dua 14V thaum siv roj teeb lub zog. Yog tias peb txuas nws rau sab nram qab kawg ntawm lub tshuab hloov hluav taws xob, feem ntau pom zoo hais tias qhov tso zis hluav taws xob ntawm lub tshuab hluav taws xob hloov pauv tau tswj tau li ntawm 12V. Hauv qab no yog daim ntawv thov feem ntau ntawm Circuit Court Daim duab no. Nws tsis pom zoo kom rho tawm cov capacitors ntawm ob qho kawg ntawm daim duab. Tus sau tau ua qhov kev ntsuas, nyob rau hauv qhov chaw ruaj khov DC nkag mus, qhov pib ntawm qhov kawg ntawm qhov kev tawm tswv yim tuaj yeem raug rho tawm, tab sis nws raug nquahu kom nws rau qhov kev nyab xeeb tag nrho. Tsis tas li ntawd, tus nqi hluav taws xob ntawm tus lej ntawm tus capacitor tuaj yeem hloov kho raws li qhov kev siv tiag tiag, tab sis nws tsis tuaj yeem yuav qis dua 10μF.

Qhov teeb meem tshwj xeeb

Thaum muaj kev sib txuas rau sab nraub qaum kawg ntawm qee cov khoom siv hloov hluav taws xob, qee zaum ua haujlwm yuav tsis ruaj khov. Yog hais tias lub Circuit Court ntawm qhov kawg-hloov pob hluav taws xob mov hluav taws xob nws tus kheej muaj tseeb, ces peb yuav tsum txuas qhov tsis kam ntawm txog 20Ω nruab nrab ntawm cov zis ntawm qhov hloov mus rau cov khoom siv hluav taws xob thiab cov tswv yim ntawm AMS1117-3.3. Tom qab txuas nrog, tag nrho Circuit Court tuaj yeem ua haujlwm ib txwm.

Tus nqi qis dua lwm txoj

Txij li cov khoom lag luam no tau siv nyob rau hauv Suav teb hauv ntau qhov ntau, Suav cov npe lag luam kuj tau tsim cov khoom lag luam nrog tib lub ntsuas thiab ntim. Vim tias Suav chaw tsim khoom muaj ntau cov nqi zoo, cov nqi ntawm cov khoom lag luam hauv Suav teb cov nqi qis dua. Tus nqi raws li hnub sau ntawm tsab xov xwm no, LM1117MPX-3.3NOPB1000Pcs, yog $ 0.15624 ntawm www.digikey.com thiab $ 0.468 ntawm www.mouser.com. Tus nqi ntawm Suav hom yog $ 0.08. Yog tias koj xav paub ntau ntxiv txog lwm cov khoom hauv tib lub koob, thov hu rau favkb@outlook.com.