sci.electronics.misc

On Sep 19, 3:12 pm, John wrote:
> On Wed, 19 Sep 2007 15:58:49 -0000, kor...@ wrote:
> >On Sep 19, 11:46 am, "enki1...@ " wrote:
> >> Hello,
>
> >> I was hoping that someone might be able to help me select a suitable
> >> motor speed controller, or inform me how I might be able to select one
> >> myself. I know next to nothing about this topic, so hopefully you guys
> >> can help. :) Here are the motor's specs as recorded from its plate:
>
> >> 1/3 HP
> >> 60 cycles
> >> 1 PH
> >> 1725 RPM
> >> 110V /
> >> 220V /
> >> CONT. RAT. (I have no clue what this stands for...)
>
> >> Type: RAR (or this..)
> >> Frame: 63
> >> Model: W20BF4663
> >> No: 413682
> >> Manufacturer: Wagner Electric
>
> >> Any help provided will be greatly appreciated.
>
> >> Cheers,
> >> Enki
>
> >This might work:
> > /Variable-Motor-Speed-Control-AC-DC-universal-Route...
>
> Key words in the description "AC-DC-universal" - it only works with
> motors that can run on DC as well as AC (some power tools). Do NOT
> connect one of these to your motor!
>
> For an AC only motor, you need a VFD (variable frequency drive) which
> is expensive (can be more than the cost of the motor). The VFD
> changes both the frequency (lower than 60Hz) and voltage (lower than
> 120 volts) to slow down the motor while retaining most of its torque.
>
> John

Thank you very much for your reply, John. So if I want a motor of
similar functionality but with variable speed, basically I would need
a new motor. What type of motor would you suggest? Also, do you know
of any good places to buy something along these lines?

Enki