Waterproof Cooling Fan You can adjust the speed of it?

   Some customers in the selection of "Waterproof Cooling Fan", taking into account the use of mini-fan environment, the fan does not want to work at low temperatures, or slower fan speed work, so that not only prolong the life of the mini-fan, but also in the low-temperature environment for fans of the wind drop smaller. Let us come together to share this design
1. Ordinary "Waterproof Cooling Fan", without making any special design, the fan can not adjust the temperature according to the ambient temperature on their own, because the fan motor is fixed, as long as the voltage is constant, how much power he is, is how much speed will determine how much wind miniature fan
2. When the voltage changes, of course, change the "Waterproof Cooling Fan" of power, and the current, then the speed will follow the changes, of course, this can only be a change in voltage from the high voltage to the low-key, does not always increase the miniature fan the input voltage, this will cause excessive current mini fan, driver IC current is too large, too large temperature burn.