Most computer motherboards come with a standard connector for the fan and it only fits one way. Connect the negative wire of the computer fan to one of the terminals on the switch.
There is no fan control.
3 wire computer fan wiring diagram. Desktop board has a 4 pin fan header. Of course all you need is the red and black wire to run your computer fan but if you didn t know what the extra wires are for this video may help you out. Connect the other switch terminal to the negative terminal of battery 2.
Fan has a 3 pin power connector. How to wire a 3 speed fan switch by pheori wiley. However two fans with 3 wire connectors may not have the same wire colors.
Fan power and ground. Proper fan connector placement is shown in the figures below. If the connector fits the pins it ll work and you don t have to worry about the pin arrangement.
Wiring diagram black yellow cap brown brown white yellow green ground alternate 3 wire method black yellow brown white yellow green brown ground insulate this connection cw direction wiring diagram cw ccw orange yellow. References ceiling fan circuit diagrams three speed fan instructions pheori wiley pheori wiley is a freelance writer who has written articles for helium and associated content among others. Usually yellow or green color wire is used in a 3 wire fan for the pulse output tacho connection.
Test the three fan speeds to ensure that everything is in the correct wiring spots on the switch. Thus instead of using the colors to distinguish the function better try to study the internal wiring connection. 3 way fan switch wiring diagram 3 speed fan switch wiring diagram collection.
4 wire fans have that same output as 3 wire fans but also a pwm input pin that you can drive with a regular old pwm output pin from an arduino or motherboard. Skinnerz has the correct answer. Connect the red computer fan wire to the positive terminal of battery 1.
Fans and on board fan headers are backwards compatible. If you need to install a 3 wire computer fan forget the wiring diagram. Condenser fan motorcondenser fan motor model number wg840728 voltage amps rpm speeds 2 2 1 4 208 230 vac 60 hertz 2 8 1 3 4.
Click on the image to enlarge and then save it to your computer by right clicking on the image. Collection of 3 way fan switch wiring diagram. 2 wire fans are just power connections 3 wire fans have an extra output from the fan to tell the generally motherboard what speed the fan is turning.
When using a 3 pin power connector with a 4 pin fan header the fan will always be on. Suggested electric fan wiring diagrams converting a 12 volt switch into a ground switch these diagrams show the use of relays on off sensors on off switches and on off fan controllers. Strip 1 2 of an inch of insulation off of the red and black wires attached to the computer fan.