I posted in another thread and thought maybe this would be of use in this thread as well.....
I had previously posted in this thread about the ISB Sola Basic Voltage Corrector. . . . http://www.isbmex.com/PDF/DOMESTICOS.pdf . . .
UPDATE: We are currently traveling along the central coast of California and have run into low voltage problems that do not allow for use of our air conditioner - and it is HOT!! We did not bring our voltage corrector because we did not think we needed it in the US. WE NEED IT!
This device can regulate both high and low voltage.