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    Please help me on LED Driver Circuit

    Hi I am making a LED Torch. Following bellow criteria tightly. Any masters can enlighten me please. Input voltage 4 X Nimh Rechargeble AA batteries in series (2700Mah) 3 X 3w Led (Working 4v - 5v each Led) Currently I am using 1omh resistors for each of the LEDs. The Leds are wire in...
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    LED help (resistor or driver)

    I am doing one too and find out its not as simple as you think. If use driver no need resistors under normal circumstances. Leds needs current Amp to run efficiently not voltage. I have made a mistake purchacing a step up driver from 3vdc (2 x AA Batteries) to 15vdc and the leds light up...
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    Simple Led driver (Stepup and booster)

    Hi, I have read your web page and find it very informative. I am a noob on electronics. Are you able to advice me on a high power led drivers? I am trying to build a high power torch. Plan: 3 X K2 3W (input 4.5-5V each) Leds in series or 4 X K2 3W Leds 2 in series connected in 2 rows...
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