Topic: led問題?

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led問題? Copy to clipboard
Posted by: hing886
Posted on: 2010-01-03 00:47

各位師兄!
我想問?想做一支6粒3w led燈.
分2組,每組3粒,是否一定要用電阻?
請問我用2 ohm 5Ｗ 向的水泥電阻可以嗎?
因為最細得5w..
回覆： led問題? Copy to clipboard
Posted by: bm
Posted on: 2010-01-04 20:50

you can direct connect adjustable voltage
output DC supply.

Adjust 10.4V to connect 3 x 3w led.
if the light not enough adjust output
a little bit until bright acceptable.

connect 2 ohm 5W wire resistor is OK but use the fan to redue the resistor heat.
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