[Nailimixam]

I bought some 3v LED, connected to 2 AA batteries. 1 AA battery = 1.2v, 2 AA batteries = 2.4v.......and it only last a few seconds than a pop sound .....

What am I doing wrong here?

[mr1350]

好似串支電阻做限流至得.

[金屬]

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[pongyee]

>> What am I doing wrong here?

you've gotten some poor quality led bulbs.

i had a china made energy saving bulb "pop" and dead some few days ago, it only lasted for a week, ouch.

[d2c]

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[d2c]

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[Nailimixam]

>>> 定 係 wrong polarity 啦

if your pic is correct then I am correct too....
i am using NiMH, 1.25x2 still only 2.5
but on the battery its written 1.2v

>>>>you've gotten some poor quality led bulbs.
>>>those 3v LED must be CHINA product
>>>>好似串支電阻做限流至得.

I tried using a 3v 100ma power converter and it's working.....

[d2c]

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[d2c]

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[Douglaschow]

聽日覆你..........! e+ 睇緊波! 嬴左答你, 輸左唔鬚你!

[oly750]

1) 質 素 差 , 一 係 AA 電 , 一 係 LED 燈

2) 電 鴨 5 穩 定

上 述 全 部 靠 估

[Nailimixam]

Battery is Sanyo white one, quality should be good enough

>>>2) 電 鴨 5 穩 定

as far as I know, most normal led don't required a stable current, as long as it's within the 3v range

or else we can't use button battery to test led before buy ...

>>>>嬴左答你, 輸左唔鬚你!

Spain win jor :)

[Nailimixam]

>>>>咁 應 該 係 好 似 mr1350 話 DRY
要 加 R

guess that's the only solution i got..

[老叟]

總之鴨貨靠彩數囉

[d2c]

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