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 ...

while reducing the PCB area. This KTB2140 current-mode PWM controller can operate as an active-clamp flyback or forward converter, with a wide 8V to 80V input range. It is optimized for highest ...