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June 26, 2010, 1:49 pm
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Re: Blower speed
Before doing something dangerous with any motor, you need to
characterize the type first, to understand what it can handle.
For one motor type, if you take a look at page 7 here, you can
see that the motor speed is a function of "poles" and the
AC frequency used. For some motors, to change speeds, you'd
need a different winding pattern.
The number of poles is mechanically fixed, on motors like this.