LED project

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http://forum.allaboutcircuits.com – Long-short. Need to power LED's from a wall outlet. Still in concept phase. I have a diagram that kind of visually depicts the project, but I don't have a wire/circuit diagram yet. My first issue/question is converting 120v AC to DC. I think I need a rectifier to convert to DC an some capacitors to smooth out the voltage. But I don't know how to incorporate a rectifier into a wire or circuit diagram, and not only do I not know which rectifier and capacitors I would need, I don't know how I would physically implement that. I'm assuming I would need a circuit board and any sort of power c (Embedded)