Totally unsubstantiated. You have no idea what I understand and don't understand. Why are you isolating the motor anyway? Would you isolate an isolating transformer across the mains, and then another isolating transformer before that and so on? Or are you presuming that the OV of the motor is connected to its chassis? There are literally millions of motors connected directly across the mains, in the UK the mains is 230V too. In a typical washing machine, one of the most dangerous environments, because of the water hazard, there is at least three motors connected directly across the mains supply, not to mention various electromechanical valves and solenoids.Yes, that is my point. I am concerned because you do not understand the benefit that comes with isolation from a transformer when dealing with mains power.
Nonsense. What is the basis of that? I have already answered AGs postAs for the commutation, listen to Audioguru - you will have lots of vibration if you commutation does not match the frequency of your 120Hz rectified AC.
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