I understand what your saying, but I was actually wondering what actually happens internally to the microprocessor/amplifier to allow it to switch so rapidly?
Being totally solid state, Is it something similar to a 555 timer, which uses the rate to charge and discharge a capacitor to control...
This may be an obvious question, but from my understanding PWM on a VFD controlled DC motor can run up to 10KHZ. What I was wondering was, what actually allows the power transistor to switch at such a rapid rate? I imagine it would have to be something reliable.
Thanks