[Milsurplus] High frequency power

[antqradio at juno.com]

My Black and Decker router is rated at 25,000 RPM with 120 VAC 60 Hz.
Must be witchcraft!
Jim

On Wed, 22 Mar 2006 23:30:09 -0500 "J. Forster" <jfor at quik.com> writes:
> There is a good reason for higher frequencies in Gyros. Generally you 
> want the
> rotor to spin very fast to maximize the rotor's angular momentum.. 
> You cannot
> get an AC motor to run faster than synchronous speed, 3600 RPM for 
> 60 Hz; 24,000
> RPM for 400 Hz. Hence the higher operating frequency,
> -John