Tsav LEDs
Ib qho LED ua lub teeb thaum hluav taws xob ntws los ntawm pn kev sib tshuam ncaj qha rau hauv kev taw qhia pem hauv ntej. Raws li qhov sinusoidal waveform ntawm qhov hloov pauv tam sim no (AC) suav nrog qhov zoo ib nrab-lub voj voog thiab qhov tsis zoo ib nrab-lub voj voog. Ib qho kev tsis ncaj ncees rau pem hauv ntej yog tsim tsuas yog thaum lub sine yoj muaj tus nqi predetermined nyob rau hauv txhua qhov zoo ib nrab-lub voj voog ntawm sinusoidal waveforms. Qhov no txhais tau hais tias ib txoj kab-powered LED yuav tsis tsim kho qhov muag tsis tu ncua vim nws yuav tawm mus thaum lub sij hawm tsis zoo ib nrab-lub voj voog ntawm AC waveform. Yog li ntawd, cov khoom siv hluav taws xob uas muaj nyob hauv AC hluav taws xob yuav tsum tau hloov mus rau hauv DC lub zog kom ua haujlwm cov LEDs uas tau tsav tam sim no hauv txoj kev tsis cuam tshuam. Tsis tas li ntawd, qhov hluav taws xob rau pem hauv ntej siv thoob plaws pn hlws ris yuav tsum tau khaws cia nyob rau hauv kev ua haujlwm tsis tu ncua kom cov LED khiav tsis tu ncua. Txij li cov LEDs yog cov khoom siv hluav taws xob tsawg nrog rau pem hauv ntej voltage sib txawv ntawm 1.5V txog 4.5V, LED module ntawm LED teeb yuav tsum tau muab nrog cov khoom sib txuam. Raws li qhov tshwm sim, LED tsav tsheb, uas hloov AC kab hluav taws xob mus rau qhov tam sim no teb rau qhov hloov pauv ntawm cov kev xav tau ntawm LED module, dhau los ua ib feem tseem ceeb ntawm txhua qhov teeb pom kev zoo LED.
