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Computer fan wall plug.
It works by sending out dc pulses also known as a square wave of different lengths based on where the knob is set.
In this video i show you how to modify a computer case fan to run off of wall power and how to control the fan s speed.
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The wall wart will supply 12v with a max of 1a of current.
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The pwm controller will control the fan speed.
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12v computer fans of that size use at most 0 5a.
The materials that you will need include the following.
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This instructable will take you through the steps to power a simple computer fan from your wall outlet.
Your fan uses 300ma or 3a you d want a 12vdc wall wart rated at supplying at least.
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You ll want one that puts out 12v and at least the same amount of current that your fan uses.