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2. Computer fan control - Wikipedia

   en.wikipedia.org/wiki/Computer_fan_control

   A fan controller with LEDs indicating fan status and potentiometers and switches to control fan speeds Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case.

3. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   The run-time for a battery-operated UPS depends on the type and size of batteries and rate of discharge, and the efficiency of the inverter. The total capacity of a lead–acid battery is a function of the rate at which it is discharged, which is described as Peukert's law. Manufacturers supply run-time rating in minutes for packaged UPS systems.

4. Computer fan - Wikipedia

   en.wikipedia.org/wiki/Computer_fan

   A computer fan is any fan inside, ... These can be plugged into 3-pin headers, but will lose their fan speed control. The Molex part number of receptacle is 47054 ...

5. These Editor-Recommended Bladeless Fans Are Designed to Cool ...

   www.aol.com/lifestyle/bladeless-fans-cool-home...

   Bladeless Fan and Air Purifier. This affordable bladeless fan features a HEPA filter designed to remove more than 99 percent of dust, mold, and allergens in up to 320 square feet of space.

6. Low-power electronics - Wikipedia

   en.wikipedia.org/wiki/Low-power_electronics

   With the development of portable computers however, the requirement to run a computer off a battery pack necessitated the search for a compromise between computing power and power consumption. Originally most processors ran both the core and I/O circuits at 5 volts, as in the Intel 8088 used by the first Compaq Portable. It was later reduced to ...

7. Brushless DC electric motor - Wikipedia

   en.wikipedia.org/wiki/Brushless_DC_electric_motor

   Small cooling fans in electronic equipment are powered exclusively by brushless motors. They can be found in cordless power tools where the increased efficiency of the motor leads to longer periods of use before the battery needs to be charged. Low speed, low power brushless motors are used in direct-drive turntables for gramophone records. [13]