transistors Having difficulties using a darlington (BD681) to drive a 12V fan from an Arduino


Posted on Feb 5, 2014

Power a 12v fan using a darlington so I can control the speed from an Arduino. When I wire up as below nothing happens, even though I`m sending a PWM signal: Please draw a proper circuit. Edit your question and hit Ctrl+M, the current image is unreadable. Check your breadboard, most rows along the side are have one or two interruptio


transistors Having difficulties using a darlington (BD681) to drive a 12V fan from an Arduino
Click here to download the full size of the above Circuit.

ns half way (Arduino`s GND connection). Possibly add a picture of your setup aswell. jippie Apr 13 `13 at 20:16




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