4핀 CPU 쿨러 핀맵과 속도 제어 그리고, RPM 센싱 방법에 대해 알아봅니다. 핀 매핑 4핀 쿨링팬의 팬 매핑은 위 사진과 같습니다. 1번과 2번핀을 통해 전원이 공급되고, 3번핀으로 팬 회전속도를 센싱할 수 있으며, 4번핀으로 팬 속도를 제어합니다. 팬 속도 모니터링 팬 속도 모니터링은 3번핀으로 가능합니다. 3번핀과 내부 결선이 Open-Collector 또는 Open-Drain 이므로 Pull-Up 저항을 사용하여 피드백… Continue reading 4핀 쿨러 핀맵과 속도제어 및 RPM 센싱 방법
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