well, i found
I'm assuming you're wanting a 'TRUE' sine-wave inverter vs. a modified/filtered sine-wave inverter.
The product in the URL above is definitely a modified/filtered sine-wave inverter.
On the product page towards the bottom, Output Waveform: modified sinewave.
Yeah 'modified sine wave' means basically 'fake sine wave' it is just a quasi square wave with filtering. A true sine wave inverter needs to switch at least at 20KHz or so
Carputer currently 'ghettoed' into car!!!
Ampie Case with rigged extra USB
Holux GPS mouse with iGuidance 2.0
Lilliput 7" touchscreen
Netgear WG121 USB WiFi
Yeah I was wondering the same question, is it bad for your PC/PSU if you use a modified sine-wave inverter?
Search the forums and you'll find an answer.
Short: Probably not in the short term, but it might reduce the life of your PSU and Inverter. You may need to modify your ATX PSU.