Today 220V AC Cooling Fan is the protagonist

Little "220V AC Cooling Fan" contains in esoteric knowledge, today introduce some simple and obvious knowledge of the computer radiator fan need it. Would first have to understand the parameters of the fan, radiator regular manufacturers back in the packaging of the product will have a general specifications. for example, to introduce the general parameters of the fan.
The first one is "220V AC Cooling Fan" size, the main fan size is generally marked in mm.
The second heat sink size, written in the volume of the heat sink fan has nothing to do with us today.
The third line is the rated voltage, the fan runs at a stable voltage under the index, the common market, common voltage DC fan for 12V. Fan speed unit rpm (revolutions per minute), which is a more important parameter fan, can bring a large amount of wind speed show. Air flow, a fan to measure the ability of one of the most important visual indicator is marked in units of CFM cubic feet per minute. Noise level is a matter of concern but also an important index, although nothing to do with the heat, but also about the user can purchase the unit is dBA (decibels). Bearings are "220V AC Cooling Fan" soul parts, are described in detail hereinafter. Life, that is, literally, nothing too esoteric things.