I've been curious for quite some time about the 2-lead RGB color-cycling LED's. I know that they have 3 tiny LED's inside and an IC, but I'm really curious to understand what's going on in the IC that allows such a small amount of power (a 3v Coin Cell seems to work quite well) to not only power all 3 LED's, but also to power the transistors (I assume that's what's causing the cycling).
I'd love to make a circuit (whether or not it's exactly like the chip) that can achieve the same result: creating the cycling effect using only a coin-cell battery as power. This is mainly for educational purposes, as I feel it would help me to understand electronics all the better. Can anyone help me achieve this? Thanks for your help!