METHOD OF FAN SPEED CONTROL
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United States of America Patent
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Issued Date -
Feb 14, 2013
app pub date -
Aug 11, 2011
filing date -
Aug 11, 2011
priority date (Note) -
Abandoned
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Abstract
In a method of fan speed control, a flow value corresponding to airflow amount through a fan during operation of the fan is detected with a fan controller. The flow value and a preset value are subsequently compared, and when the flow value is less than the preset value, a pulse-width-modulation (PWM) signal is outputted to increase rotation speed of the fan.
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