9V Brushless Fan Driver Circuit 3.7V to 12V 4 Gear

This brushless fan driver circuit is designed to control compatible DC brushless fans operating from 3.7V to 12V. Featuring four adjustable speed levels, it provides flexible airflow control for DIY cooling systems, portable fans, and electronics projects.

Its compact PCB design makes installation easy while ensuring stable fan operation across supported voltage ranges.

• Supports 3.7V–12V input voltage
• 4-speed adjustable fan control
• Compatible with brushless DC fans
• Stable and efficient circuit design
• Ideal for DIY electronic projects