"Tiny Cooling Fan" fan speed is adjusted to obtain the temperature information directly from the CPU, the fan without any temperature measuring device. Depending on the CPU temperature, the thermostat will have a different fan speed adjustment corresponding, and fan speed changes can be done four five, or even more, basically feeling infinitely variable. Since the pulse signal is adjusted in real time, is very sensitive to changes in the fan speed, CPU speed and temperature changes are almost synchronized. "Tiny Cooling Fan" in computer standby time, can be maintained at a very low speed. In standby time, CPU temperature in the following four or five degrees, the speed of only one thousand turn, greatly reduces the running noise. The designed maximum speed of more than four thousand turn, only in CPU temperature close to the limit temperature is 65-67 degrees, when to appear. Compared to conventional thermostat "Tiny Cooling Fan" has a greater range of speed control, a better solution to the problem of noise and performance.