I am following this example of a sensored BLDC motor.
- This post assumes conventional current flow.
I am trying to understand how the diodes in this circuit protects the rest of my circuit from back EMF. If my understanding is right, when the motor produces back EMF, the back EMF will flow from the motor to the positive terminal of my battery because the top diode makes a direct path for the back EMF to flow to the positive battery terminal. Please let me know if my understanding of how current will flow is incorrect.
If my battery is 36 volts and if the back EMF flows directly to the positive terminal of my battery will that damage my battery because of the voltage spikes? If so how do I protect my circuit from back EMF?