LED Teeb Pom Kev: 5 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:31

Qhov no tsuas yog lark uas tau khaus nyob tom qab ntawm kuv lub taub hau ib pliag. Nws yog lub zog siv hluav taws xob LED teeb.

Kauj Ruam 1: Cov khoom siv

Tsis muaj ntau yam uas koj xav tau rau txoj haujlwm no. Ib lub teeb pom kev zoo. A.47 microfarad 200V capacitor.1/4 watt 1kilo ohm resistora khub ntawm cov leds thiab lwm yam.

Kauj ruam 2: Sib dhos

Koj yuav tsum pib los ntawm kev tshem tawm lub teeb pom kev, muaj ntau cov lus qhia nrog cov kauj ruam no thiab kuv yuav tso nws tseg ntawm no. Lub Circuit Court muaj ob lub LED txuas nrog hauv kev tawm tsam, Kuv tau teeb lub LED tsuas yog luv ntawm qhov tuag thiab glued lawv ua ke los ua ib leeg ob chav LED. Twist ob txhais ceg ntawm cov LED ua ke, ntawm ib sab solder lub capacitor, lwm tus tiv thaiv. Yooj yim.

Kauj Ruam 3: Xeem

Ntawm no kuv tab tom tuav lub Circuit Court nrog cov khaub ncaws thiab lo nws rau hauv lub qhov hluav taws xob, qhov no yog qhov tseeb, cov txheej txheem ntsuas pom zoo.;-)

Kauj ruam 4: Lub teeb

Khaws lub voj voog mus rau hauv lub teeb thiab siv qee cov kua nplaum kub los tuav nws hauv qhov chaw, nco ntsoov kom muaj dej txias, koj yuav hlawv koj cov ntiv tes. Sim ua kom nruab nrab LED hauv lub teeb. Thaum koj muaj lub voj voog nyob hauv qhov chaw, khoov ib qho ntawm cov coj hla lub hauv paus thiab ruaj ntseg nws nrog daim kab xev txhuas. Cov hlau lead thib ob yog ib puag ncig cov ntsia hlau tooj dag tso rau hauv cov kua nplaum kub. Txheeb rau luv thiab koj yuav tsum zoo mus.

Kauj Ruam 5: Ua Li Cas Thiab Vim Li Cas

Ua ntej los hais txog kev saib xyuas, koj xav tau lub tshuab tsis muaj qhov sib txawv rau qhov haujlwm no, qhov tseem ceeb tam sim no, qhov no ua haujlwm li cas? Peb txhua tus paub tias kom khiav LED tawm qhov siab dua qhov ntsuas qhov hluav taws xob peb tau txwv qhov tam sim no nrog tus tiv thaiv. Tseeb qhov xwm txheej no peb tuaj yeem txwv qhov tam sim no nrog tus tiv thaiv tus nqi kwv yees. 6.8K ohms, txawm li cas los xij tus tiv thaiv yuav xav tau rau dissipate ob peb watts !!! Tsis yog yam zoo. Txij li thaum peb tab tom siv AC qhov chaw peb tuaj yeem ua kom tau txais txiaj ntsig ntawm cov cuab yeej ntawm lub capacitor raug rau AC hu ua Reactance. Peb tuaj yeem sib npaug reactance rau kev tawm tsam. Xam cov reactance yog cov qauv yooj yim R = 1/(2*Pi*Freq*C) Kev daws qhov no rau C yuav muab rau peb qhov loj me capacitor peb xav tau txwv qhov tam sim no rau LED. Yog li cas peb thiaj muaj tus tiv thaiv txhua? Thaum lub hwj chim tau hloov pauv muaj qhov nrawm ntawm qhov tam sim no thiab 1K ohm resistor nyob ntawd kom txwv qhov ntawd tam sim no tam sim no, Thaum kawg, Vim li cas ob lub LED? Zoo ib qho LED yog diode thiab txij li peb tab tom cuam tshuam nrog AC ntawm no peb yuav tsum tau xaim ob tus coj hauv kev tawm tsam kom cov nthwv dej tuaj yeem ua tiav nws lub voj voog. Qhov tseem ceeb txhua qhov LED yog flickering ntawm 60HZ tab sis nyob rau theem sib txawv.