Led for those who has customized using leds

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Dec 11, 2005 | 09:22 PM

#21

Daytona350Texas

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From: Amarillo, TX

Quote:

Originally Posted by ares

I may be wrong about how your describing it. but heres how it should be.

positivewire-LED-LED-LED-resistor-negativewire.

now what you can do, is something like this
LED-LED-LED
Positivewire< >resistor-negative wire
LED-LED-LED

so now you have 1 positive wire, 1 resistor, and 1 negative wire. but you split the LED series. the leds will go positive-tall short-tall short-tall short-resistor

you cant have more than 3 LEDs in a series for white(4 can be done but its not great for the LEDs because the current varies)

take the above setup and imagine the LED-LED-LED many times, each set of 3 its own thing, all connected on 1 side to the positive wire and on the other side to the resistor.

So for every 3 white LEDS u need 1 resistor between them, and then continue on? 3 white leds, 1 res? etc?

Dec 12, 2005 | 08:33 PM

#22

Paul350Z

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From: Riverside CA

Quote:

Originally Posted by Daytona350Texas

So for every 3 white LEDS u need 1 resistor between them, and then continue on? 3 white leds, 1 res? etc?

The resistor can go anywhere in the circuit because it's the law (Kirkof's series voltage law which states current remains the same in all parts of a series circuit, voltage drops along the way). Resistances in series are additive so if you need 150 ohms you can take two 75 ohm resistors and connect them end-to-end in series.