I know that LED's hooked to mains is a forbidden topic, and I am not planning to try it (anymore). I was just wondering why LED projects always seem to have rectifiers to supply DC to the LED. Since LED's are diodes and diodes are used to make rectifiers, I figured why not just make a rectifier out of LED's and voila! LED lamp. I have seen some projects that use a lot of LED's in a cluster as a light bulb replacement or flashlight, but they all use DC converters to supply the LED's. One project I saw took a socket from a regular bulb and replaced it with a few LED's and a AC to DC power supply. I thought that if you jammed in more LED's instead of a power supply you could get more light out of it. Is such a thing really that unsafe?