Pulse width modulation (PWM) Interface

Pulse width modulation (PWM) is a method for binary signals generation, which has 2 signal periods (high and low). Pulse Width Modulation can be used to control analog circuits with digital outputs of the processor. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion.

Pulse width modulation is also used to reduce the total power delivered to a load without resulting in loss, which normally occurs when a power source is limited by a resistive element. The underlying principle in the whole process is that the average power delivered is directly proportional to the duty cycle modulation.

PWM module is present in DlN-1, DLN-2, DLN-4M and DLN-4S USB-GPIO adapters.