>> I had always thought the store-bought inverters produced ‘AC’ that was more square wave and less-so smooth sine wave.
Indeed, that used to be true. Technology marches on; newer inverter technology produces quite clean sine wave power.
That said, I’m sure you can still find cheap crappy square-wave inverters from *some* Chinese vendor. :-)
hmmm. Will check the specs on what I have. No longer have a scope to actually LOOK at the output. Last scope I connected was over 25 years ago ;-)
I have a couple like this: http://www.amazon.com/Whistler-Pro-2500W-Watt-Power-Inverter/dp/B003R7LQDI/ref=sr_1_1?ie=UTF8&qid=1404394259&sr=8-1&keywords=2500+inverter