Computer Cooling Fan Wiring Diagram

Finally note that the connector of a common 2 wire fan has a red and a black cable.

Computer cooling fan wiring diagram.

You can use almost all standard 3 wire cooling fans with this adapter circuit. A pc fan s wire colors are pretty consistent with red almost invariably marking the positive and black marking the negative or ground. It uses a 40 amp electric relay and electric fan sensor. Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note.

The ins and outs of a 4 wire computer fan. The red cable goes to the positive of the power supply vcc and. Video of the day. Hayden flex a lite or perma cool brands can provide a 12 volt output when activated.

Relays shown in these diagrams can provide options. However for optimum performance it may become necessary to slightly change the values of components c1 r4 and c2. The third wire varies depending on the manufacturer but usually it is blue or yellow. You don t need it to make the fan turn but the third wire is there for a good reason.

The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method.