This is my Smalls VV PassThru
Uses a 13.2v wall-wart. all I had on hand. A bit excessive, but what ever.
Uses a switching regulator (KIS-3R33S). They can be easily found under $1-USD.
Parts List:
KIS-3R33S (mod to specs on that link)
13.2vdc wall-wart (salvaged from an InterCoolerTS PS3...