With regard to power tools. I’ve Googled and read, and it only seems to confuse me more. Thank you.
In: Engineering
The gist of it is that there’s a couple ways to get rotation from an electric circuit. One involves a constant current (DC), but needs “brushes” to swipe along your spinning electromagnet, in order to keep your current flowing.
In a brushless motor, you actually vary your current with 3 phase AC (alternating current), and that lets you rotate your motor without those brushes. This can give you longer tool-life, as those brushes get a lot of wear.
(You’ll see brushless motors called brushless DC, even though they run on AC. This is because you can run the entire assembly off of DC as it is turned into that 3 phase AC by a component of the motor)
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