I'm repeating myself just as part of the conversation going here. My finding is that if you feed the PD converter a 120 volt sine wave it will supply its rated current at 14.4 volts. Anything less than that on the AC side and you can get 14.4 volts OR the rated current, but not at the same time. A small non-inverter generator won't work for full current at 14.4 even if the voltmeter reads 120 because it isn't producing a good sine wave. In a head-to-head comparison test, a WFCO converter supplied full current at 14.4, even with "lousy" AC power, and I have no reason to think the same isn't true with an IOTA. It makes the decision tough for us: If you want the manual control you have to settle for a weaker converter, unless you are fortunate enough to have really good AC power, then you can have it all with the PD.