17001184A

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DC fans are low-frequency permanent magnet direct current (DC) motors that are used mainly for cooling electronic circuits and on computer motherboards. The purpose of the DC fan is to keep the associated components cool and prevent them from becoming too hot and damaging the system. DC fans come in a variety of sizes and configurations, but all serve the basic purpose of keeping internal components cool and operating without risk of damage.The main components of a DC fan are the permanent magnet rotor, stator, bearings, impeller, motor housing, and fan blades. The magnets in the rotor create a magnetic field that interacts with the stator. This interaction causes the rotor to spin in a circle at a constant speed. The motor housing encloses the stator and rotor and directs the air across the stator and rotor. The fan blades then draw the air into the motor housing, out of the fan, and into the device.The most common type of DC fan is the axial fan, which is most often used on computer motherboards. Axial fans use a propeller-like design to draw air straight through the fan, allowing for even air distribution over components. Another common type of DC fan is the blower fan, which is best used in high-temperature applications. Blower fans use a centrifugal airflow design—drawing air from the center to the outside of the fan, producing a much higher air pressure than standard axial fans.DC fans are typically powered by either 5 or 12 volts of electricity, although some smaller fans can be powered by as little as 1.5 volts. The exact voltage and current will vary depending on the type of fan and the size of the device it is powering. Some DC fans may also use pulse-width modulation (PWM) to regulate speed, allowing them to accurately adjust the speed of the fan to match the internal heat load of the device without sacrificing performance. DC fans offer many advantages over traditional AC fan designs. They are typically cheaper to purchase and they provide more accurate, regulated airflow. They also require less energy to operate and generate less electrical noise than AC fans. In addition, DC fans are often used in quieter operation due to the lower-frequency motors used in their construction.Overall, DC fans are a reliable, cost-effective, energy-efficient cooling option for many different types of electronic devices. By utilizing the best components and design, DC fans can provide your device with the perfect balance of cooling performance and quiet operation.

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