Why the lm339 why want to generate SPWM generate a big, big wave

CodePudding user response:

The eye, with q,

CodePudding user response:

Output to a resistor and proved,

CodePudding user response:

To learn on the computer screen, the photo is not very clear,
To learn to ask questions in the problem description is clear, the input signal, the output waveform are posted,

CodePudding user response:

@ the wise know already should good karma
Right! Output cannot be suspended, there is no circuit logic meaning,

CodePudding user response:

Must have a pull-up resistor