6 ms·
Not in most laptops they don't. https://forum.arduino.cc/t/is-a-flyback-diode-built-into-laptop-fans/932322 https://forum.arduino.cc/t/is-a-flyback-diode-built
by BizarroLand 3y ago
Not in most laptops they don't.
https://forum.arduino.cc/t/is-a-flyback-diode-built-into-laptop-fans/932322 https://forum.arduino.cc/t/is-a-flyback-diode-built-into-lap...
"You will find those fans are brushless DC fans, they are controlled by an inbuilt driver circuit and as such do not need a flyback diode."
- malfist 3y agoSo you "disprove" my statement with some rando on the Arduino message board that has less than 20 posts in their lifetime? What makes you think they're an authority? Brushless motor still have fly back voltage that has to be clamped. You may not need to install a diode in the fan, but I can guarantee you that this "inbuilt driver circuit" has such a diode. And if you read the linked thread a bit more you'd see where they test it and it does produce -100V at shutdown. If there wasn't a flyback diodes it'd be burning out ic's left and right
- BizarroLand 3y agoWhy would I accept your word without any backup? Its on you to provide evidence of your claim, not on me to disprove your unfounded claim.