Cov txheej txheem:
- Khoom siv
- Kauj Ruam 1: Xam Tus Kheej Resistor Qhov R1 thiab R2
- Kauj Ruam 2: Sib Sau Ua Ke
- Kauj ruam 3:
Video: Cov Khoom Siv Hluav Taws Xob (3.3v): 3 Cov Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25
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
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
Pom zoo:
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