Thane Heins Perepiteia.

[AbbaRue]

A quick question.
Were can I buy a large Ferrite Toroidal core of say 6 inch diameter?

[polarbreeze]

If this were the case, howerver, then disconnecting the coil would increase the extent and depth of the accelerating speed range and cause the rotor to accelerate further instead of slowing down as it does.Ã, 

... instability can go in either direction. It can EITHER result in acceleration OR it can result in deceleration. It just depends on which way the system starts to go when the instability first sets in. The point is that it tends to move AWAY from its previously stable speed/torque, but it can be in either direction...

...You would not be able to draw a set of torque vs. speed curves for the motor, disconnected load, andÃ,  connected load that would allow this to occur...Ã, 

I think I would. I have in mind, for example, the two curves in figure 12 (page 9) of this paper: AC Induction Motor Fundamentals

...not plausible given reasonable estimates of the rotor inertia, coil inductance, and motor torque curve...
Mr. Entropy

What is your reason for thinking that?

PB

[OilBarren]

A quick question.
Were can I buy a large Ferrite Toroidal core of say 6 inch diameter?

TOROID TECH CAN MAKE YOU ONE AND WIND IT AS WELL IF YOU WISH.

Thane

p.s.
RON I AM GETTING TO YOUR QUESTIONS SOON.

[OilBarren]

I cannot point out your error until you show your work.

Cheers,

Mr. Entropy

MR. ENTROPY:
I AM WARNING YOU - DON'T DRINK PB's KOOL AID - IT WILL POISON YOUR MIND AND KILL YOUR ENTHUSIASM.

Thane

[polarbreeze]

SADLY PB DIDN'T BITE ON MY APRIL FOOLS JOKE.

According to tradition, I think that makes you the "fool".Ã, 
PB