|One of the major differences between AC and DC fans are the connectors. AC fans either have terminal or two wire connectors. On the other hand, DC fans have two or more wire connectors. The two wire connectors on AC fans are black and identical to each other.|
AC Terminal Connectors
Terminal connectors are two metal prongs that stick out from a side of the fans enclosure. Terminals are more convenient than wire connectors by reducing the need for soldering. They are also more versatile by being able to be easily attached to various fan cords.
Wire Cord: A wire fan cord essentially converts a fan with terminals into wires connectors. One end of the cord can be attached to the fans terminals, and the other end can be soldered onto the power source. When the fan needs to be replaced, you can easily detach the fan from the cord and attach on a new fan. In contrast, using fans that originally had wire connectors would require soldering each time.
Power Plug Cord: A power plug fan cord allows a terminal connector fan to be plugged into an electric outlet. One end of the cord can be attached to the fans terminals, and the other end is a standard power plug. The power plug can then be plugged into any standard electric outlet. When the fan needs to be replaced, the power plug cord can be easily be detached to be used on the new fan.
AC Wire Connectors
|Wire connectors, also known as leads, are two wires sticking out of the fan. The wires are enclosed in black plastic to prevent contact. At the tip, the actual metallic portion is revealed to be connected to a power source. Wires can also be soldered onto power cords to be plugged into an electric outlet. In any case, soldering would be required each time the fan needs to be replaced.|
|DC fans usually have two or more wire connectors. The first wire on a DC fan is colored red and the second wire is colored black. This is because the red wire must receive a positive voltage and the black wire must receive a negative voltage. Many DC fans have a third or fourth wire of a different color such yellow or white. These additional wires help control special functions on the fan such as thermistor or PWM. Often, all the wires on the DC fan is bounded together with a molex or pin connector at the end.|