Quote:
Originally Posted by budm
The PWM line on the power supply/Inverter board has the pull-up resistor to pull PWM LINE HIGH, the output of the MICRO controller IC does the PWM switching and it stuck ON so the output is at GND right now.
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Sorry I don't understand well. What you suggest? Just ignore the issue and provide a 3.3v level PWM signal with 200-300 Hz right.