AC motor speed controller on a MSW inverter
I want to power a 6 amp 115vac 4.5 inch angle grinder from my 800 watt MSW inverter, but have the ability to significantly slow down the rpms. I cannot justify a variac of adequate capacity, but ther...
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Wow, those fins are sexy!
I understand, now, the reason for speed control. If your grinder and conditions were able to limit the draw to under 5 amps, I'd offer you a small variac I have sitting, absorbing dust. I think your tools and they way they're used, the inexpensive speed controller is a better fit.
You may have an issue with two switching supplies in series (inverter and speed controller). That assumes the controller is PWM but it may not be built like that. I would use a light socket and incandescent bulb for the sea trials.
I understand, now, the reason for speed control. If your grinder and conditions were able to limit the draw to under 5 amps, I'd offer you a small variac I have sitting, absorbing dust. I think your tools and they way they're used, the inexpensive speed controller is a better fit.
You may have an issue with two switching supplies in series (inverter and speed controller). That assumes the controller is PWM but it may not be built like that. I would use a light socket and incandescent bulb for the sea trials.
