Hi. I have a case-cooling fan wiring question. I know a little about electronics, but I've not worked on PCs. I'm getting ready to change the 80mm fan that's inside my power supply, so I popped the P/S cover and took a peek at the existing fan. I saw just two wires running into it, which is what I expected for a simple 12 volt DC motor.
The replacement fans that I've seen for sale (and the one I bought) have three wires. The third (yellow) wire is apparently for RPM regulation which I won't be using. I just want this thing to run flat out. Should I just ignore the yellow wire?...leave it unattached?
Also, I'm curious about how the fan speed is regulated. Is there some sort of countering voltage supplied on the yellow wire that reduces the 12 volts?
Thanks,
Rob
The replacement fans that I've seen for sale (and the one I bought) have three wires. The third (yellow) wire is apparently for RPM regulation which I won't be using. I just want this thing to run flat out. Should I just ignore the yellow wire?...leave it unattached?
Also, I'm curious about how the fan speed is regulated. Is there some sort of countering voltage supplied on the yellow wire that reduces the 12 volts?
Thanks,
Rob