For not using a scope, this method is pretty accurate, and only uses two discrete circuit components (the resistor and the speaker). If you’re ever in a pinch with PWM, this is sure to help ...

Of course, the standard way of controlling CPU fans these days is with PWM, so he built a circuit which essentially converts the PWM signal from the motherboard into a phantom thermistor.

Compared to the Uno, the Mega also comes complete with 15 PWM pins, which is handy for controlling electronic components in different applications. But what exactly are these PWM pins, and how do ...

In addition to these PWM modes there is also a "Low Ripple DAC" mode that creates a minimum period pulse train whose High/Low average is that of the chosen duty cycle. When used with a low-pass filter ...

Researchers in Iraq have designed a multi-level cascaded inverter that can purportedly produce high-quality sinusoidal output voltage and current waveforms, while reduing harmonic distortion. It uses ...