My green leds are orange.

[zer0]

well a wile ago i got a pack of mixed leds and i desided to play around with them and make them work so i twisted them togeather with the leeds off of a power connecter in my computer and pluged it in it turns out all of my green colored leds are orange. and the read one i blew up was well red.

anyways because i was board and i never did it before i recodede it with my digital camera set to video mode (the fact that its green not the exploding one)

enjoy lol
4.8mb
http://nitrose.100megswebhosting.net/junk/imgp0063.mov

[Olly]

zer0, what voltage were the leds ? you usually need a resistor in series with the leds, to allow them to work at their correct voltage when powered from a psu.

[zer0]

honestly they didnt tell me ther was no lable at all telling me anything about them on the package. the only thing i knew is it was a mix of red and suposidly green leds.

[Olly]

yes, sounds like you may have blown them ..... google for leds/resistor/pc/psu or something like that and you'll see plenty of examples of people using leds in series with resistors to allow their leds to work at the correct voltage.


Olly

[Starbuck3733T]

http://led.linear1.org/ for LED calculator. try 3V, 10mA - that'll be enough to make most LEDs happy, but not overpower them. For reference, my white ones are 3.5V, 20mA.

[zer0]

well i found a way to test them i took aparty an old mouse of mine and touched each leed to the leeds comeing off the led in the mouse. it turns out they are green but arnt very bright.

looks like i have to buy some resistors lower than the ones i have right lowest i have right now is 1.2k even if i run it on 12 volt i still have to have a 500 ohm resistor.

Thanks guys

[Nexxo]

http://led.linear1.org/ for LED calculator. try 3V, 10mA - that'll be enough to make most LEDs happy, but not overpower them. For reference, my white ones are 3.5V, 20mA.
Correct. Most LEDs want 20mA. As a rule of thumb, the voltages are:

Red, Orange: 1.5V
Green, Yellow: 2V
Blue, White, Purple: 3.2V

On Bit-Tech.net there is a LED resistor calculator (http://www.bit-tech.net/article/68/).

[zer0]

i guess that explains why my red one burnt out when my green ones didnt.


also i noticed something when i attached my red leds to the leeds on my mouse i noticed that the led on the mouse went out when i did the same with the greens it didnt go out it just dimmed a little. why would that happen?

[Nexxo]

Electricity takes the path of least resistance. Generally items that require very little voltage have little resistance --so your red LEDs have less resistance than your green ones. This means that electricity will be more likely to take the red LED route, thus completely ignoring the mouse LED, but will divide more evenly between the green LED and the mouse LED.

[Pug]

Mind de doors (moving to Gen Comp) ^_^