On 28 November 2011 16:06, Peter Blodow <[email protected]> wrote:
> Very interesting, also
> for other things than tools and machines (e.g., quick pointing telescope
> and dome drives). Not shown is the drive electronics - like in the used
> car ads, the item not mentioned mostly is the crutch. And better not ask
> for prices.

I think that it uses a conventional BLDC drive, what I can't figure
out is what their "rotating return path" is.
I suspect it just means that the current return is in the opposite
direction, but through the adjacent, opposite polarity, magnet.

But then, if you do that, do you need commutation at all?

As for price, I think they did a motor for RCplane use at around $200.

-- 
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.

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