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Old September 27th, 2013, 13:30   #4
Kos-Mos
 
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Join Date: Nov 2005
Location: Lévis (QC)
Most modern MOSFETs already use a diode (built in the chip 99% of the time).
I also add a large one to prevent damage to the FET when I build some.

Now for trigger components, I guess it would work, but at the same time, people want some active braking because the collapsing EMF is not enough to slow the motor/gears in time. Adding a diode in a normal switch-based circuit would amplify the issue a little.

I have to redo the wires in my P90. I will see if it makes an appreciable difference with/without the diode.
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