Okay... so I got bored today and wanted to hack something or build something. I decided to build something... so based on plans I saw here, here, and here I decided to make one for the PSP. The PSP takes 5V in which is what the USB version puts out. It took about an hour to test and solder (I suck at soldering) and viola! It works! The only thing is that there doesn't seem to be enough current to keep the PSP at "charge" status while the device is on. When playing a game or watching a movie, the status light on the PSP cycles from green to orange repeatedly. But with the unit off, the status light stays orange meaning it's charging. The only thing is that the voltage regulator tends to get a bit hot, and while charging, there is an extremely high pitched buzz that's barely audible that eminates from the plug end of the charger that's not present with the OEM wall charger... if anyone can shed some light on it, let me know! In addition, since the LM7805 is rated at 1A, and the PSP draws 2A, the unit will not power the PSP without the battery in place. I might upgrade the device in the near future to put out 5V and 2A! Here's some pics!
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