Fanuitgang

Fanuitgang is a Dutch term that translates roughly as “fan output” or “fan outlet.” In technical use it denotes a point where a fan is powered, controlled, or where air exits a system. The exact sense depends on the field, but all meanings involve a connection or discharge related to a fan.

In computing and electronics, a fanuitgang most often refers to a connector or port that drives a cooling fan. On computers, motherboards, and power supplies these are usually 3-pin or 4-pin headers. A 3-pin header provides ground, a +12 V supply, and a tachometer feedback signal; a 4-pin header adds a PWM input for speed control. Some fans use separate leads with standard 2- or 3-pin connectors. When selecting components, voltage, current rating, and connector compatibility should be checked to avoid damage or unreliable operation.

In digital electronics, fan-out (Dutch: fanuitgang) describes how many inputs a single output can drive reliably. It depends on transistor technology and loading, and it affects switching speed and signal integrity. A high fan-out may require buffering, while a very low fan-out can underutilize drive capability.

In building services and HVAC, fanuitgang can refer to the discharge outlet of a ventilation fan—the point where conditioned air exits a space or enters a duct system. In this usage, design considerations include airflow, noise, pressure losses, and compatibility with ducts, grilles, and safety standards.

See also: ventilator, fan connector, PWM, fan-out, HVAC.