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To cool these components, fans are used to move heated air away from the components and draw cooler air over them. Fans attached to components are usually used in combination with a heat sink to increase the area of heated surface in contact with the air, thereby improving the efficiency of cooling. Fan control is not always an automatic process.
Most of the Dyson fans and heaters are controlled by small infrared remote controls, which can be held magnetically on the appliance when not in use. A more-limited set of control switches is provided on the body of the appliance. The design for a "bladeless" fan had been patented by Toshiba in 1981, but was not marketed before the patent ...
A standard cooling fan is a DC motor with blades attached. By varying the voltage input across the acceptable range for a fan, the speed of the fan will increase (to added voltage) and decrease (to reduced voltage); a faster fan means more air moved and thus a higher heat exchange rate.
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Cross-flow fans give airflow along the entire width of the fan; however, they are noisier than ordinary centrifugal fans. Cross-flow fans are often used in ductless air conditioners, air doors, in some types of laptop coolers, in automobile ventilation systems, and for cooling in medium-sized equipment such as photocopiers.
The multi-surface cooling design typically works on any surface without blocking any vents. This makes them suitable for use on desk, lap, uneven/soft surfaces (couch, bed/duvet, carpet) and outdoors. Some laptop coolers also feature lights that are activated along with the operation of the cooling fans.
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With the frenzy of the 2025 NBA trade deadline now behind us, the attention of the NBA-watching world now shifts to the Bay Area for the high-octane basketball exhibition/convention/trade show ...
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