containsmachine

PWM four-wire fan controller

 
Overview

GP9101-F20K-L2H1-SW is used as the ADC chip to output PWM to control the four-wire computer fan. Here it controls the 18-yuan violent fan of Laowu. It actually has an emergency stop function hhh

 

Reference https://oshwhub.com/wzw666/pwm_fan

 

Duty cycle 0%~100% adjustable frequency 20KHz

 

 

参考设计图片
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Update:2025-06-20 12:26:14

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