Re: Small, slow AC machines: surface to volume ratio?

I wrote:

> A little load, a little less speed (conservation of power or energy). A
> little less speed, a little *less* output. A little less output, well,
> you get the idea. dy/dx > 1.

> A positive feedback system, right? Remove the load, it overspeeds,
> blowing out the prime mover. Add load, it sags, stalling or lugging the
> prime mover.

> So what happens on the other side?

> Easy. Negative feedback. dy/dx < 1.

Er, dy/dx < -1. That sounds right.

Doug

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