Cov txheej txheem:

Cov Khoom Siv Hluav Taws Xob (3.3v): 3 Cov Kauj Ruam
Cov Khoom Siv Hluav Taws Xob (3.3v): 3 Cov Kauj Ruam

Video: Cov Khoom Siv Hluav Taws Xob (3.3v): 3 Cov Kauj Ruam

Video: Cov Khoom Siv Hluav Taws Xob (3.3v): 3 Cov Kauj Ruam
Video: Последний разбор аккумуляторной батареи Apple MagSafe для iPhone 12 серии 2024, Kaum ib hlis
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Cov Khoom Siv Hluav Taws Xob (3.3v)
Cov Khoom Siv Hluav Taws Xob (3.3v)
Cov Khoom Siv Hluav Taws Xob (3.3v)
Cov Khoom Siv Hluav Taws Xob (3.3v)

hloov fais fab mov

Tab sis kuv siv nws rau kuv esp8266-01 iot tsev automation project

uas ua haujlwm nkaus xwb ntawm 3.3 volts 5 volts tua nws

Txoj hauv kev ua tau zoo tshaj plaws los hloov 5v rau 3v yog siv cov ntsuas hluav taws xob tawm

yog li cov lus qhia no yog los qhia yuav ua li cas siv qhov sib txawv linear voltage kom raug

tshwj xeeb 3.3 volts

Khoom siv

Yam yuav tsum tau muaj:-

1. LM317 (T) voltage regulator ic

2. 1k lossis 2k resistor (ib qho raws li tus qauv)

3. 10k potentiometer lossis trimmer

4. 1uf electrolytic capacitor (yam tsawg kawg nkaus)

5. 0.1uf ceramic capacitor

6. Cov qhob cij

7. Ib co jumper xov hlau

Kauj Ruam 1: Xam Tus Kheej Resistor Qhov R1 thiab R2

Xam tus nqi tiv thaiv R1 thiab R2
Xam tus nqi tiv thaiv R1 thiab R2
Xam tus nqi tiv thaiv R1 thiab R2
Xam tus nqi tiv thaiv R1 thiab R2

Vout = 3.3v (hauv kuv cov ntaub ntawv)

tom qab qee qhov kev suav thiab tsis saib xyuas qee qhov txiaj ntsig Kuv tuaj nrog qhov kev ua zauv no

1.64 = R2/R1

R1*1.64 = R2

Kuv tab tom siv R2 ua lub zog loj

thiab R1 = 2.2k

Kauj Ruam 2: Sib Sau Ua Ke

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