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Circuit Converts PWM Fan Drive to Linear and Reduces Acoustic Noise
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Circuit makes PWM fan drive linear with temperature change - EDN
Controlling a 4-wired fan PWM Signal using Arduino allows only two settings - Electrical Engineering Stack Exchange
SpeedFan
Additional Special Function
HW-585 PC CPU Fan Speed Controller
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PWM fan mod problem - Cooling - Linus Tech Tips
Using Raspberry Pi to Control a PWM Fan and Monitor its Speed - DriftKingTW's Blog
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So you want PWM control of your 3-pin fan? | TechPowerUp Forums
So you want PWM control of your new CPU fan? | TechPowerUp Forums
FAQ: What pin-configuration do Noctua products use?
