Originally Posted by
CageyH
One thing I am puzzled by is that once you have a decent PSU, and the motor turns accurately, what difference does a top end PSU make if the control circuit is left standard?
I'm not sure I fully understand your question, but the word 'accurately' is the key. Once you have a top motor - SP10 and hopefully SP1200 - then the goal is to ensure it spins at a constant rate. By and large the better the power supply the more accurate and constant that will be. I guess like anything else there are diminishing returns.
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