9LG0912H4002

DC FansDC fans are electric fans that use direct current from a battery or power supply to provide airflow in an electronic device. They are generally used to cool a device that otherwise produces a great deal of heat, such as a computer processor or audio amplifier. These fans have a wide range of possible uses, depending on the needs of the particular device.The 9LG0912H4002 is a DC fan designed for use in applications where the highest DC voltage capability is required in a 12 inch fan. This fan features a 40mm dual ball bearing motor and operates over a voltage range from 4.5-25 volts. It is designed for a wide range of applications, including computers, medical, industrial, telecommunications, and many other environments.Application Field The 9LG0912H4002 can be used in many applications, and its key features make it suitable for a wide range of environments. The wide operating voltage range and high DC voltage capability make it ideal for use in harsh electrical environments. Its also suitable for use in extreme temperature environments, with an operating range of -20°C to +70°C.Additionally, the fan is designed with a protection circuit, which is critical when high currents are passed in a circuit. The protection circuit helps avoid damaging components and protecting the device itself from being overloaded and shorting out.The fan is also equipped with a thermal shutdown and overvoltage protection circuit, which helps protect both the fan and the device it is powering from overcurrent and overvoltage conditions. This helps ensure that the device will not be damaged if it is exposed to excessive electrical loads.Finally, the 9LG0912H4002 is designed to be easy to install with a quick connect cable. The quick-connect cable helps reduce the time it takes to connect the fan to a device, and makes it convenient to use in applications where time is of the essence.Working PrincipleDC fans operate by powering a motor, which then turns a set of fan blades to create air movement. The motor is typically made up of an electro-magnetic coil, two sets of ball bearings and a permanent magnet. When connected to a direct current voltage source, the coil spins, creating an alternating magnetic field which interacts with the permanent magnet, creating the motion that powers the fan blades.The speed at which the fan operates can be controlled by adjusting the voltage supplied to the motor. With an increase in voltage, the motor will spin faster and create more airflow. The fan also features an internally pre-set speed control circuit, which can be set to maintain a consistent speed regardless of the voltage supplied to the fan. This provides a degree of control to the user as to the desired speed of the fan.In summary, the 9LG0912H4002 DC fan is a robust and reliable option for controlling air flow in almost any application. Its wide operating voltage range, protection circuits, and easy installation makes it suitable for a wide range of applications and environments.