On 15/08/2016 19:57, Tim+ wrote:
The Natural Philosopher wrote:
On 15/08/16 13:58, Fredxxx wrote:
but the significant thing about a DC motor is you apply DC to
it. What happens inside the box isn't helpful.

Well obviously from the comment above you DO NOT know what a brushless
motor is, because if you apply DC to it, it melts.

It needs a controller which is usually externnal to the motor.




Next you and harry will be saying that there is no such thing as an
electrically powered motor, they're all magnetic.

AS I keep saying, its a matter of what you call a motor.

Is this, for example, a DC or an AC motor?

http://www.hobbyking.com/hobbyking/s...ner_Motor.html


Or only 'part of' a motor?



Where does this fit in the scheme of things?

https://youtu.be/i7LOF1GZpdo

Its not a unipolar motor. It's commonly called a ball bearing motor
attributed to Stefan Marinov.

http://www.electricstuff.co.uk/bbmotor.html#article

It relies on the thermal expansion of the balls in a ball bearing.