I am using a transistor on the ground side to act as an on/off switch for a brushless cooling fan and am wondering if I should have a reverse paralle diode for inductive spikes. I am not familliar with the brushless electronics inside the fan, and I have heard the diode should be connected across the inductive load rather than the switch for protection (with the exception of H-bridges because of the way they work). So reverse parallel diode across the MOSFET? across the fan? no need because the fan already has flyback diodes (or equivelant)? I do not know since I am unfamilliar with brushless drivers.
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