Tus ua haujlwm ua haujlwm ntawm Christmas decorations feem ntau suav nrog cov hauv qab no:
Ua haujlwm ua haujlwm ntawm LED Christmas teeb
Cov tub ntxhais ntawm LED Christmas teeb yog lub teeb-emitting diode (LED), uas yog cov hluavtaws hluavtaws txuas ntxiv rau hauv lub p cheeb tsam li ntawm lub p cheeb tsam mus rau PE cheeb tsam, Cov ntaub ntawv siv cov khoom siv, tso tawm cov khoom sib txawv ntawm Gallium cov khoom siv sib txawv, thiab xiav LED
Kev Tswj Circuit Court
Lub teeb taws teeb ci hauv LED Christmas teeb tau feem ntau txuas nrog txhua hom LED teeb liab nyob rau hauv cov LED teeb meem puas, tag nrho txoj hlua teeb yuav tawm mus; Nyob rau hauv hom kev sib tw, txhua lub teeb caj dab ua haujlwm nws tus kheej, nws yuav tsis cuam tshuam nrog lub teeb pom kev zoo thiab kev sib xyaw thiab cov kev sib xyaw yog feem ntau siv .
Tsis tas li ntawd, LED Christmas teeb xav tau kev tswj hwm tshwj xeeb rau lawv cov kev ua hauj lwm tam sim no, thiab cov khoom siv hluav taws xob ntxiv rau cov khoom siv coj ua ke xws li}) kuj tseem tuaj yeem suav nrog. hauv qee qhov nyuaj LED Christmas lub teeb circuits, Astable Multivibrators kuj tau siv los tsim cov xwm txheej xwm LED teeb LED teeb rau nyem qhov.
Kev pab fais fab
LED Christmas teeb feem ntau muaj zog los ntawm DC hluav taws xob muab los ntawm DC hluav taws xob kom ntseeg tau tam sim no, yog ua kom muaj kev ua haujlwm zoo ntawm LED .