led燈仔

係鴨記買左d 3v & 5v 既led燈仔, 如果我加上架殼度, 咁洗唔洗加左電阻先再駁上車仔度呢?

請指示一下, thx!

3v

3v
globe88 發表於 2009-8-6 08:57

                               
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唔係好明閣下既意思?

用3v 餅電既話係唔需要加!

用3v 餅電既話係唔需要加!
adidaswing 發表於 2009-8-6 13:15

                               
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但我想駁落車仔度呢, 4粒3a 電成4.8v, 咁我車殼用4粒3v led燈, 咁洗唔洗加呀, 請指示~thx

但我想駁落車仔度呢, 4粒3a 電成4.8v, 咁我車殼用4粒3v led燈, 咁洗唔洗加呀, 請指示~thx
ellis 發表於 2009-8-6 15:26

                               
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use 並聯 (1 die, other still work), 1.8V up to 3.6V different color LED use different voltage(orange , red, green, yellow are lower V)
from the standard V , + or- 1v or little different is okay! just affect the brightness, depends your LED quality, if too cheap can't stand the higher voltage, it will die

我諗加電阻好d~一來無禁易燒,二來無禁食電~