DC直流风扇大多是利用高效的永久磁铁，在通电后透过电磁效应原理，驱动轴心带动扇叶运转，大幅度降低风扇运行时产生的摩擦动能消耗，降低DC直流风扇发出的噪音。那么直流风扇的启动电压是多少呢？

　　DC DC fans mostly use high-efficiency permanent magnets. After being electrified, they drive the axis to drive the fan blades to run through the principle of electromagnetic effect, which greatly reduces the friction kinetic energy consumption and noise generated by DC DC fans. What is the starting voltage of DC fan?

　　DC直流风扇启动电压的高低取决于以下两点：

　　The starting voltage of DC fan depends on the following two points:

　　1、这个最小的电压必须提供足够而且持续的偏置电压给风扇控制电路。

　　1. This minimum voltage must provide sufficient and continuous bias voltage to the fan control circuit.

　　2、这个最小的电压必须高于输出驱动器的触发电压。

　　2. This minimum voltage must be higher than the trigger voltage of the output driver.

　　例如：单片机（MCU）的工作条件是5V/10mA，那么供电电压必须高于5V，再加上3V用于给电源稳压器提供偏置电压。这就是说最少需要8V。

　　For example, if the working condition of MCU is 5V / 10mA, then the supply voltage must be higher than 5V, and 3V is used to provide bias voltage for the power regulator. This means that at least 8V is required.

　　更低的电压也许可以使风扇运转，但是这并不意味直流风扇可以达到所有的规格参数。最小的操作电压应该设定为：比额定电压小15%-20%，最大的操作电压可以由CS功能控制，并且具备很低的效率损耗。但是，增加了额外的功率消耗，这个功率消耗等于：（最大的操作电压-额定电压）×偏置电流。

　　Lower voltage may make the fan run, but this does not mean that the DC fan can meet all specifications. The minimum operating voltage should be set to be 15% - 20% less than the rated voltage, and the maximum operating voltage can be controlled by the CS function with low efficiency loss. However, additional power consumption is added, which is equal to: (maximum operating voltage - rated voltage) × bias current.

　　对于单功能直流风扇（没有功能PWM功能），为了达到最低的功率损耗，直流风扇可以提供以下电压范围：

　　For single function DC fan (without function PWM function), DC fan can provide the following voltage range in order to achieve the minimum power loss:

　　1、额定电压为12V的风扇，可提供的操作电压范围为：07-14V。

　　1. The operating voltage range of the fan with rated voltage of 12V is 07-14v.

　　2、额定电压为24V的风扇，可提供的操作电压范围为：15-27V。

　　2. The fan with rated voltage of 24 V can provide operating voltage range of 15-27v.

　　3、额定电压为48V的风扇，可提供的操作电压范围为:36V-57V.

　　3. The fan with rated voltage of 48V can provide operating voltage range of 36v-57v

　　山东红宝电气可根据客户特殊要求，可以提供更宽泛围的操作电压，了解更多的风机相关产品请点击：散热风机型号

　　Shandong Hongbao electric can provide a wider range of operating voltages according to the special requirements of customers. If you want to know more about DC fans, you can click: