Duty cycle
Also: on-time fraction
The fraction of each period that a periodic digital signal is active.
Duty D = t_on/T; average load behavior depends on amplitude, dynamics, switching topology, and filtering.
- Units
- dimensionless or percent
- Formula
D = t_on/T
Example 2 ms high in an 8 ms period is 25% duty.
Common misconception Duty cycle is not frequency and does not guarantee proportional motor speed.