Just wondering what the best approach is to take regarding detecting and inverting a pulse width modulation signal.
The complication is that it operates on a switched earth with a constant voltage, rather than switching the voltage.
I thought of perhaps using a microcontroller with a pin pulled up connected between the load's earth and the mosfet used for connecting it to ground, but wouldn't this drop the voltage across the device?
Got to be a simpler way, the pwm is a typical high frequency motor driving setup running at 12v.
The complication is that it operates on a switched earth with a constant voltage, rather than switching the voltage.
I thought of perhaps using a microcontroller with a pin pulled up connected between the load's earth and the mosfet used for connecting it to ground, but wouldn't this drop the voltage across the device?
Got to be a simpler way, the pwm is a typical high frequency motor driving setup running at 12v.
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