A few months ago Circuit City had a small UPS (325VA) for $20 after rebate. On impulse I bought it. All I have it hooked up to is my 55in RPTV. It will run the TV durring a power outage for at least a minute. I have never left it on until it quit on me. Is the UPS actually helping with anything, or is it too small to make a difference? I am getting a generator, and I wonder if this UPS would help with the "dirty" power I get from the generator?