DC Brushless Fan Exquisite Precision High Quality DC12V-24V Cooling | Обустройство дома

Air outlet specifications: 48MM * 58 MM   Air inlet diameter: 73.9 MM   Motor diameter : 78.8 MM   Total height : 86 MM   Line length: about 500 MM   Weight : 800 g         If you want to operate simply: 1. (red line + blue line) connected to the positive pole of the power supply.                              2. (black line + white line) connected to the negative pole of the power supply   Note: DC brushless motor, the positive and negative poles can not be connected wrong, if the wrong connection will burn the drive board.   According to the above wiring, it can work. If the voltage is adjusted, the applicable voltage is DC6V-24V (can be started from DC5V super), and the rated voltage is DC20V.       However, if the motor is powered on above, the motor may be super-powered. Its rated current is 0.82A when it is DC20V on the label. However, if the wiring is 20V, the current is about 1.65A. If the current exceeds the standard, it will be easy to generate heat. In less than 10 minutes, the motor is hot, it should not be suitable for long hours of work, if it is to work for a long time, the voltage is preferably not more than 14.4V. This is relatively uncomfortable to heat. Here are the parameters for direct operation:   DC12V current: 0.98A   DC14.4V current: 1.15A   DC18V current: 1.45A   DC20V current: 1.65A   DC24V current: 1.65A        These fans are all new and unused, but the Japanese are not allowed to leave the factory, so all the wires must be rewired before they can be used. Most of the fan products are very beautiful, but because some of the boxes are damaged, a small number of fans will inevitably have slight friction marks on the appearance, but this does not affect the quality of the use. Please be careful when you are absolutely perfect in appearance.     This motor can also use the PWM input to precisely control the speed. The wiring method: (red line + blue line) is connected to the positive pole of the power supply, the black line is connected to the negative pole of the power supply, the white line is connected to the PWM signal input, and the PWM signal and the power supply are shared. (The negative electrodes are connected together).   We set the duty cycle to 50%, then adjust the frequency to control the fan speed and power effect is very obvious. Below are the parameters we measured at different voltages:   Voltage : DC12V duty cycle : 50%   Speed ​​adjustment with pulse frequency: 2000HZ-80000HZ   At a minimum of 2000HZ: current 0.26A,   When the pulse is 60000HZ: the current is 0.82A,   At a maximum of 80000HZ, the current is 0.98A.   Voltage : DC20V duty cycle : 50%   Speed ​​adjustment with pulse frequency: 2000HZ-60000HZ   At a minimum of 2000HZ: current 0.5A,   When the pulse is 20000HZ: the current is 0.82A,     At a maximum of 60000HZ, the current is 1.7A.   Voltage : DC24V duty cycle : 50%   Speed ​​adjustment with pulse frequency: 2000HZ-50000HZ   At a minimum of 2000HZ: current 0.6 A,   When the pulse is 12000HZ: the current is 0.82 A,     At a maximum of 50,000 Hz, the current is 1.7 A.        Power on the test machine, if you run according to the 20V0.82A power on the label, the fan does not heat up very much. It works for 5 minutes, the motor is a little warm, but it lasts for half an hour. It is also this temperature, and it does not continue to rise. Therefore, it should be able to work for a long time, but if this current is exceeded, for example, if 20V1.65A is running, the machine will be hot for less than 10 minutes, and it is not suitable for long-term work. If it is operated by simple connection, You can consider reducing the voltage with DC12V, so that its air volume is also quite good, and the motor temperature rise is not large, it should be able to work for a long time. We are not expert in technology. The above is just the individual's test of the parameters of the motor according to their own ideas, for the reference of the buyer's friends. As for the use of formal science, we really do not understand, please forgive the buyer.