Originally Posted by
DickB
I don't have one on my Carvewright but do have one on my DirecTV box. Here in central Florida summer thunderstorms are common, as are short power outages. These cause the DirecTV box to restart which is a several minute process. Annoying in the middle of your favorite program. The small UPS that I got handles this well. Also keeps the internet and phone modem up and running.
Key UPS considerations for Carvewright are quality of output, current, and power rating.
A UPS will approximate a sine wave output. Some will do a better job than others. Devices running on a UPS may or may not be sensitive to the quality of sine wave. No telling if the Carvewright is or isn't. Look for one that advertises a pure sine wave to be on the safe side. Most of the larger-capacity UPSs are pure sine wave.
Next you need a UPS that can supply the minimum amount of current required by the Carvewright (manual says 8 amps for Model C).
Finally, how long do you need to run on battery? Just a few minutes, to get through a power glitch? Or an hour or two to finish a carve? You need to match UPS capacity to your needs.
If you decide to get a UPS, let us know the result.
(Al, your relay suggestion is novel, but a wall wort's filter capacitors might keep a relay energized for a time - even seconds - after AC power is gone. I wouldn't bother.)