Imihlahlandlela yokusebenzisa okukhiphayo kwe-3.3V ochungechungeni lwe-AMS1117 ne-LM1117 nemikhiqizo ehlukile ebiza kancane

I-pdf ehlobene nolwazi

incazelo yomkhiqizo

I-AMS1117-3.3 ne-LM1117MPX-3.3 yizilawuli ezintathu zokukhipha eziphansi ezilawula ukuphuma ezinomugqa okhipha i-1A yamanje. Ngenxa yokusebenza kwayo okuhle kakhulu, isetshenziswa kabanzi.

isici esiyinhloko

Ukwehla kwamandla kagesi kungu-1.2V kuphela ku-1A okukhiphayo kwamanje, nomsebenzi okhawulelwe wamanje, umsebenzi wokuvikela okweqile, ukunemba kwamandla kagesi kungafinyelela ku-1.5%.

Imihlahlandlela Yokusetshenziswa

Njengoba amandla alo wokufaka aphezulu angeqi ku-18V, ngizama ukuyigcina ingezansi kwe-14V esimweni esisebenza ngamandla webhethri. Uma siyixhuma ekugcineni kokuphakelwa kwamandla kagesi, imvamisa kunconywa ukuthi amandla okuphuma kwamandla kagesi ashintshayo alawulwe cishe ku-12V. Okulandelayo umdwebo wesekethe wohlelo lokusebenza ojwayelekile kakhulu. Akunconyelwe ukushiya ama-capacitors kuzo zombili izinhlangothi zesithombe. Umbhali wenze isivivinyo, endaweni ezinzile yokufaka ye-DC, i-capacitor ekugcineni kokufaka ingashiywa, kepha kunconywa ukuyigcina ukuze kube nokuzinza okuphelele. Ngaphezu kwalokho, inani le-capacitance le-capacitor lingalungiswa ngokuya ngesimo sokusetshenziswa sangempela, kepha alikwazi ukuba ngaphansi kuka-10μF.

Inkinga ekhethekile

Lapho uxhunywe ekugcineni kwangemuva kokunikezwa kwamandla kagesi, kwesinye isikhathi umsebenzi uzobe ungazinzile. Uma kungekho phutha ekujikelezeni kwamandla okushintsha uqobo ngaphambili, khona-ke sidinga ukufaka ukumelana okungaba ngu-20Ω phakathi kokuphela kokuphuma kokunikezwa kwamandla kokufaka kanye nokuphela kokufaka kwe-AMS1117-3.3. Ngemuva kokuxhunywa, isifunda sonke singasebenza ngokujwayelekile.

Enye indlela enezindleko eziphansi

Ngoba lo mkhiqizo usetshenziswa eChina mkhulu kakhulu, ngakho-ke ama-Chinese brand nawo athuthukise imikhiqizo enamapharamitha afanayo nokupakisha. Ngoba ukukhiqizwa kwamaShayina kunezinzuzo eziningi zezindleko, amanani entengo yemikhiqizo yamaShayina aphansi kakhulu. Intengo njengosuku lokubhalwa kwale ndatshana, i-LM1117MPX-3.3NOPB1000Pcs, ingu- $ 0.15624 ku-www.digikey.com naku- $ 0.468 ku-www.mouser.com. Intengo yomkhiqizo waseChina ingu- $ 0.08. Uma udinga ukwazi kabanzi ngeminye imikhiqizo kuchungechunge olufanayo, sicela uxhumane ne-favkb@outlook.com.