What does PWM frequency mean?
PWM stands for Pulse Width Modulation. The speed controller uses PWM to control the power going to the motor. The controller breaks the current going to the motor into separate pulses that occur about 13,000 times per second. The percentage of the pulse that is on power compared to the part of the pulse that is off power determines how much power the motor sees. An oversimplified example is that if 50% of the pulse is on and 50% is off, the motor sees 50% power. It is important to note that each on phase of the pulse is equal to the full current draw of the motor and prop at full throttle. Thus, the importance of all components in the system be fully capable of extended periods at full throttle.
