4 Cov thev naus laus zis tseem ceeb ntawm LED teeb pom kev zoo
4 Cov thev naus laus zis tseem ceeb ntawm LED teeb pom kev xaiv thiab kev teeb tsa ntawm LED Muaj peb yam tseem ceeb ntawm LEDs nyob rau hauv cov ntsiab lus ntawm cov qauv: ib qho yog leaded (lead kaum) LED, qhov ntsuas tam sim no feem ntau yog 20 mA,
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