I was looking through PacFu's Pictures of his Melted 9800 and I was wondering if anyone knew or had an idea what the circuitry is for that is mounted on the fan itself? The only thing I can think of is that is has something to do with fan speed. It seems like they would only need a set of sensors, however this configuration has a couple large transistors, and several ICs, suggesting something more complicated. Speed control maybe.
Any ideas?
Any ideas?