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Any circuit for driving a motor that's more complex than wiring it to a power source through a simple on/off switch. Examples include speed and torque control using H-bridges, brushless motor controllers, stepper controllers, VFDs. Constant speed examples include relay control, reversing, reduced-voltage starting, overload protection and other control requirements more complex than a simple 0n/off switch.

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How can I find the damaged phase in an RC drone's brushless DC ESC?

I have a damaged RC drone/quad. It has an all in one FC/ESC. The "all in one" is brand new. One of its motors is twitchy/does not spin. That motor is tested to be good. I tested it by swapping a new …
Jeffrey Edward Messikian's user avatar