A4S250-AA02-02

AC Fans are a type of rotary fan which consists of an engine, a rotary blade and a motor powered by a power supply. The A4S250-AA02-02 is a type of AC fan which is designed for high-performance, low-noise operation when used in a wide range of applications. In this article, we will take a closer look at the application field and the working principle of the A4S250-AA02-02.

The A4S250-AA02-02 is designed for specific applications where low-noise operation and high-performance are key requirements. This type of AC fan is capable of operating at temperatures ranging from -30°C to +120°C, making it suitable for a wide range of applications such as PCB cooling, case ventilation, and desktop cooling. Additionally, it is designed to be maintenance-free and reliable, reducing the need for frequent maintenance and repairs.

The A4S250-AA02-02 features an electronically commutated (EC) motor, which is more efficient than an AC motor. This improves the overall efficiency of the fan, as well as its power consumption, resulting in lower operating costs. Additionally, the EC motor helps to minimize noise and vibration, making it suitable for use in quiet applications.

In a typical AC fan, a permanent magnet is used to control the speed of the fan. However, the A4S250-AA02-02 uses an electronically commutated, brushless DC motor which is powered by an external power supply. The motor consists of three coils, which create a rotating magnetic field. As the field rotates, it induces a current in the three coils, driving the motor’s rotor. The speed of the rotor is determined by the frequency of the input signal, which is adjustable via the external power supply.

In the A4S250-AA02-02, these three coils are mounted on a PCB in the center of the fan. The PCB contains an onboard motor controller which regulates the speed of the rotor. This is done by varying the frequency of the input signal, allowing the fan speed to be adjusted according to the user\'s needs. Additionally, the motor controller also allows for thermal protection, allowing the fan to be shut down in the event of overheating.

The A4S250-AA02-02 also features a low start-up voltage of 5V and a wide operating voltage range of 12-24V, making it suitable for a wide range of applications. The fan is designed to be highly efficient, consuming less energy than traditional AC fans. Additionally, it features a low-noise, vibration-free operation, making it ideal for use in quiet environments.

To summarize, the A4S250-AA02-02 is a type of AC fan designed for a wide range of applications. It is powered by an externally supplied, electronically commutated brushless DC motor, which is capable of operating at temperatures ranging from -30°C to +120°C, allowing it to be used in a wide range of environments. Additionally, the motor is highly efficient and consumes less energy than traditional AC fans, resulting in lower operating costs. Finally, the low-noise, vibration-free operation makes it ideal for use in quiet applications.