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A 120 mm variable speed fan. If they use fans at all, quiet PCs typically use larger-than-usual low-speed fans with quiet-running motors and bearings. The 120 mm size is common, and 140 mm fans are used where cases or heat sinks allow them. Quiet fan manufacturers include Nexus, EBM-Papst, [30] Yate Loon, Scythe, [31] and Noctua. [32]
In the United States, the allowed night-time noise level is 45 A-weighted decibels (dBA). [36] In the UK the limit is set at 42 dB measured from the nearest neighbour [37] according to the MCS 020 standard [38] or equivalent. [39] In Germany the limit in residential areas is 35, which is usually measured by European Standard EN 12102. [40]
Noisy machines can be more than a nuisance; over time, they can cause hearing loss. Husky’s Silent Air Compressor reaches 65 decibels at its loudest, which is quieter than many other compressors ...
A finned air cooled heatsink with fan clipped onto a CPU, with a smaller passive heatsink without fan in the background A 3-fan heatsink mounted on a video card to maximize cooling efficiency of the GPU and surrounding components Commodore 128DCR computer's switch-mode power supply, with a user-installed 60 mm cooling fan.
It has a sleep mode that reduces the fan speed to a mere whisper. Filtered air noise is as low as 22 decibels — quiet enough for you and your family to doze off effortlessly.
The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity fans can find on the NYT website and app. With daily themes and "spangrams" to discover ...
These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
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