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Oct 22, 2012
10:53 PM
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Oct 22, 2012
10:53 PM
This component is a variant of the 4 wire fan controller available in PSOC Creator. In 3 wire fan application, power is not constant applied to the fan so a "PWM stretch" technique is used to measure fan speed. PWM stretch basically expend the high period of the PWM pulse so that power is applied to fan while speed measurement is taking place.
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