PWM
This involves sending a series of pulses with a duty cycle to fake a steady signal. In Electric Motors, we use PWM and inertia to keep a motor running efficiently.
There are other options to generate the analog output (we basically fake the output)…
Concepts:
- Duty cycle: The percentage of the time the signal is high in one cycle
- Modulation frequency: The frequency at which the cycles repeat The advantages here are cheaper hardware and noise immunity