Your dumb....the PS3 takes 120 VAC and the car is 12-14 VDC; you are basically telling him to electrically engineer a power inverter....
What the hell are YOU smoking? //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif You ever look at the big box on the power cable for a slimline PS2? What the hell do you think is in there? Electronics don't run on 120VAC, they'd fry. They take 120VAC and turn it into smaller DC voltages. You wouldn't need to engineer anything because there's not inverting to be done.. simply taking your system voltage and lowering it to what's needed by the unit...
Take your computer, for example. NOTHING in the computer runs on 120VAC... 120 VAC goes into the power supply and comes out as, say, 12v and 5v in the molex connectors case, and much tinier voltages used for all the vairous other chips, etc.
I guaran-****ing-tee you that if your PS3, Xbox360, etc, at some point, takes the 120VAC and turns it into some sort of lower DC voltage. If the transformer is external , then you can just measure what the various input voltages are going into the unit.. AND THEY'RE NOT 120VAC.
If they take 120VAC in and convert it with an internal powersupply, then you'll have to measure what's coming out of it.. but that might get a bit hairy.
At any rate... go get re-edumacated on electrical theory.
120VAC directly powering sensitive electronic components.. that's a good one. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif