which fet's are which?

[kenney]

with the drive motor fet's, which one is for rev. and which one is for forward?

[Donziikid]

Are you talking about when you upgrade FETs, like as in numbers and which goes where? Or are you talking about which FET on your stock Xmods electronics board is forward/reverse?

[kenney]

Yes which is forward and reverse.

[Donziikid]

Originally Posted by JSHWAA

Contrary to popular belief, there's no one FET for forward and no one for reverse. I understand that since there's 2 directions(forward and reverse), it must be intuitive to think that there is an FET designated for each direction. Actually both FET's are used in either direction. Each of those FET IC's(integrated circuit) has 2 FET's inside of it....an N channel FET and a P channel FET. All together you have 4 FET's. These are configured in an H-bridge circuit like you see in aftermarket versions like Rob's V1 board. When you go forward, the N-channel of one turns on, and so does the P-channel of the other. In reverse, they switch. So both FET's are actually being used in either direction.

After a quick bit of searching. Hope this helps. JSHWAA is a genius when it comes to electronics.

[kenney]

great thank you. So usually when you burn out your drive motor fets they both blow?

[Donziikid]

Yes, in most scenarios that's likely to happen.