Tsis Siv Neeg Txoj Kev Teeb: 8 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:29

Ib txoj haujlwm yooj yim tseem ua tau zoo ntawm kev txuag hluav taws xob. Ntau lub sijhawm nws tshwm sim thaum nruab hnub txoj kev teeb hluav taws xob tau khaws cia kom txog thaum ib tus neeg pom zoo li no ua rau muaj kev poob ntau zog.

Cov Npe Ntawm Cov Khoom Kho Vajtse:

1) Lub Teeb Ntsuas Tus Kheej (LDR) - 8mm

2) 2N2222 Transistor - Pob Hlau

3) 2 Tus Pin Ntsia Hlau Txuas (PCB)

4) DC txuas poj niam

5) 40 Pin Txiv neej rau Txiv Neej Jumper Hlau (2.54 hli)

6) 12V fais fab mov

7) Resistor 100K

8) 8mm 0.75W Super Bright StrawHat Dawb LED

9) Swb Hloov - PCB Mount (Suab 0.1 nti)

10) Daim ntawv qhia zaub mov

LOS YOG

Lub hom phiaj dav Dotted PCB

Cov cuab yeej (tsuas yog xav tau Yog tias ua hluav taws xob ntawm dotted PCB tsis txhob siv lub khob cij):

1) Soldron - Soldering Hlau 25W 230V

2) Solder Hlau

3) Hlau Stripper & Cutter

Siv Software:

1. Proteus - rau simulation Circuit

2. Fritzing - rau breadboard Circuit Court tsim

Kauj Ruam 1: Photoresistor lossis Lub Teeb Pom Kev Tiv Thaiv LDR

Tus photoresistor lossis lub teeb nyob ntawm tus tiv thaiv LDR yog cov khoom siv uas nkag siab rau lub teeb. Thaum lub teeb poob rau nws ces qhov tsis kam hloov pauv.

Qhov tseem ceeb ntawm kev tiv thaiv ntawm LDR lossis photoresistor hloov mus rau ntau Megaohms (MΩ) hauv qhov tsaus ntuj thiab tom qab ntawd poob mus rau ob peb puas ohms hauv lub teeb ci. Nrog rau qhov kev hloov pauv dav hauv kev tiv thaiv, LDRs yog qhov yooj yim siv hauv ntau daim ntawv thov kev sib tw. Ntawm no peb yuav siv LDR los tswj tus qauv teeb pom kev zoo.

Kauj ruam 2: Transistors

Tsis zoo li cov neeg tawm tsam, uas tswj hwm kev sib raug zoo ntawm qhov hluav taws xob thiab tam sim no, transistors yog cov cuab yeej tsis siv kab. Lawv muaj plaub hom kev ua haujlwm sib txawv, uas piav qhia txog kev ntws tam sim no los ntawm lawv. (Thaum peb tham txog kev ntws tam sim no los ntawm transistor, peb feem ntau txhais tau tias tam sim no ntws los ntawm tus neeg sau khoom mus rau tus xa tawm ntawm NPN.)

Plaub hom kev ua haujlwm transistor yog: Saturation - Lub transistor ua haujlwm zoo li luv Circuit Court lossis kaw hloov. Kev ywj pheej tam sim no ntws los ntawm tus sau rau emitter. Txiav tawm-Lub transistor ua haujlwm zoo li qhib Circuit Court lossis qhib qhib. Tsis muaj cov dej ntws tam sim no los ntawm tus sau rau emitter. Ua haujlwm - Tam sim no los ntawm tus neeg sau khoom mus rau tus xa tawm yog qhov sib npaug rau qhov tam sim no ntws mus rau hauv paus. Rov Qab-Ua Haujlwm-Zoo li hom nquag, tam sim no yog sib piv rau lub hauv paus pib, tab sis nws ntws rov qab. Tam sim no ntws los ntawm emitter mus rau tus neeg khaws khoom (tsis yog, raws nraim, lub hom phiaj transistors tau tsim los rau).

Nov ntawm daim ntawv thov NPN transistor 2n2222 yuav ua haujlwm nyob rau hauv Saturation (kaw hloov) thiab Txiav-tawm (qhib hloov) hom. Muaj ntau yam sib txawv ntawm 2n2222 ua yas (TO-92) thiab hlau (TO-18) daim ntawv. Kuv tau siv hlau ib qho txij li tam sim no muaj peev xwm tuav tau ntau dua los ntawm tus sau rau emitter (max. 800 mA).

Kauj Ruam 3: Daim duab Circuit Court

Kauj Ruam 4: Thaum Pom Lub Teeb

Thaum muaj Teeb pom kev thaum nruab hnub ces LDR tsis kam txo. Qhov no ua rau qhov hluav taws xob ntawm lub hauv paus qis dua 0.6V thiab yog li, transistor txav mus rau hauv Hom-txiav tawm-tsis muaj cov dej ntws tam sim no los ntawm Collector rau Emitter ua raws li qhib qhib.

Kauj Ruam 5: Thaum Tsis Pom Kev

Thaum Teeb pom kev pib poob qis dua li LDR qhov kev tiv thaiv nce ntxiv. Qhov no ua rau qhov hluav taws xob ntawm lub hauv paus ntau dua 0.6V thiab yog li, transistor txav mus rau hauv Saturation hom - tam sim no ntws los ntawm Collector rau Emitter ua raws li kaw hloov.

Kauj Ruam 6: Simulation

Koj tuaj yeem rub tawm ldr_streetLight. DSN muab rau ntawm no thiab qhib hauv proteus software los simulate.

Kauj ruam 7: Breadboarding

Siv cov khoom siv hluav taws xob los ntawm daim phiaj los ntsuas lossis koj tsim hluav taws xob ntawm PCB dotted

Kauj ruam 8:

Cov ntaub ntawv:

en.wikipedia.org/wiki/Photoresistor

www.farnell.com/datasheets/296640.pdf

www.onsemi.com/pub/Collateral/P2N2222A-D. P…

en.wikipedia.org/wiki/Transistor

en.wikipedia.org/wiki/2N2222