# Circuit Diagram for a 12V LED Lamp

Posted on Feb 5, 2014

What color LED it makes a difference. One LED or how many 3mm 5mm What is you power source These are vital things to answer. More info required. It does not compute! There`s them that knows and them that just thinks they know, whitch are you Stir the pot and see what rises up. I have catalytic properties I get a reaction going. Here you go, one

very basic electrical diaghram for a LED. The resistor will depend on the particular LED used and the desired light intensity from say LED. As a fellow member stated, you can use Ohms law to determine the value of the resistor. that is you take the supply voltage subtract the LED`s forward voltage (this is where the color comes in) then decide on the current to be used and then select then the resister. V=IxR I=V/R R=V/I. That sums it up. There`s them that knows and them that just thinks they know, whitch are you Stir the pot and see what rises up. I have catalytic properties I get a reaction going. Let`s assume that each LED`s forward voltage drop is 1. 2Vdc (makes it easier for me). This means that if I string ten LEDs in series, I won`t need a resistor since 10 x 1. 2vdc = 12vdc. If your LEDs are 1. 5Vdc, you`ll need eight in series and no resistor. If they are, say, 2. 1Vdc, it`s going to be a bit different. 6 x 2. 1vdc = 12. 6Vdc, which is a little more than your supply. It might still work albeit a little dimmer. If you use five, 5 x 2. 1Vdc = 10. 5Vdc. That means your resistor will have to drop 1. 5Vdc. You`ll need to know the forward current of your LEDs in order to calculate your resistor`s value. Now take out your calculator and start pushing buttons. Si tienes el cG³digo del LED, ve sus valores de consumo, voltaje directo "Vf(Vdc)", mG ximo consumo de corriente "If(mA)", la resistencia aproximadamente del LED...

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