Right now I'm trying out some ideas for lighting up my PC case. To my knowledge, what I have should be working, but it's not. Any help is geatly appreciated!
I'm trying to work out 18 x 5mm white LEDs to be powered by a molex connector (I'm assuming they're 3.4v, but I'm not 100%). Before I put all that together, I soldered 3 LEDs in series with a 100 ohm resistor. One side is connected to the 12v slot and the other to the ground in the molex connector from my computer's power supply. Turning on the PS, nothing is lighting up and I'm not sure what the problem is.
Here's a diagram of what I have going on... http://ift.tt/1MDlURW
With 12v power supply, 3.4 forward voltage, 20 mA current and 3 LEDS: - Power used by the circuit should be 240 milliwats - Power used by LEDs is 204 milliwatts - And the resistor [Brown, Black, Brown, Gold (~100Ω)] takes up 36 milliwatts What am I doing wrong here? I plan making this into an 18 LED circuit (6 x 3 LEDs + resistors in parallel) once I get this one to work. And again, if you have any ideas that I've missed, I'd love to hear it. Just buying some lights would be boring...
Thanks for the help!
Submitted February 20, 2015 at 12:31PM by WhosKona http://ift.tt/19HhR8b
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