Depends a lot on the motor. If it's an induction motor (quiet) you basically need variable frequency drive (VFD), if it's a universal motor (noisy) a light dimmer will work fine (if it is rated for inductive loads). If it is a squirrel cage or shaded pole, you really can only use the speeds it is set to.
So what kind of motor? What power rating? Do you really need to vary its speed, or would turning it on and off work just as well? If this is just a pump for a fish tank, I would live with turning it on and off. If it is for say a waterfall, you can get much the same effect as a variable speed pump by just having a reservoir at the top with a V-shaped outlet, and modulate the pump at a frequency higher than the empty rate. A digital water level meter makes this easy to implement. njh On Sat, 8 Nov 2008, Mike Zimmerman wrote: > looking for what 1-wire hardware i would need to control the voltage to a > standard 110v outlet. the end result of this will be to plug > a motor (pump motor) into the outlet and control the voltage to set the speed > at which the motor runs. ive done some googling for hardware > but have only come across what is needed to control a dimmable FL ballast, > not to directly control voltage on a 110v circuit. any push in the > right direction would be greatly appreciated. > > Mike > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
