dc-ac inverter alternative

[wsladaritz]

I have a in-dash dvd player with a audio/video input. Just for shits and giggles I'm on a little project to get my snes put in there somehow. The power requirements are 10V, 850mA, 17W DC. Now I know the aux power output is 12V... and I have a power inverter that puts out 200W, 120V AC. So I was thinking, instead of converting the 12V DC aux to 120V AC and then using the snes power cord to step down to 10V is there way that anyone knows of to possibly fabricate a step down transformer for this application. I have a little knowledge on these electronics involved from recent college classes. But the young teacher... well, she wasn't all that great at teaching

Any help or ideas would be awesome! Or this might be a fool's idea that shouldn't be messed with... let me know please