CURRENT in a psone screen.. how much does it actually use?

Robotron · Post by **Robotron** » Sat Jul 01, 2006 11:10 am

The PSU for the psone screen says 3.0A..

how much is ACTUALLY used.. and how much is actually used after the white LED mod?

I need to know if it's low enough for me to build a little circuit to draw it's power directly from a commodore 64 power supply, or what... .

Post by **Skyone** » Sat Jul 01, 2006 4:08 pm

700mA on average w/o LED mod.
450mA on average w/ LED mod.

Post by **marshallh** » Sat Jul 01, 2006 10:31 pm

The figures vary a bit, but generally it is 350mA for a 3-led modded screen, and 750mA with the original backlight. I've verified these numbers myself.

The reason the PSone LCD adapter is 3 amps, is because it has to run both the screen and the console at the same time.

I would avoid using a C= power brick, because they are quite cranky and will crap out if your AC line isn't the best.

You might as well get a premade 3.3v regulator from TI and run it straight from the psone lcd wall wart.

Kurt_ · Post by **Kurt_** » Sun Jul 02, 2006 11:17 am

If you use the adapter with just the screen, it cranks out enough current to mess up the colour on your screen (not forever, though).

Post by **marshallh** » Sun Jul 02, 2006 4:50 pm

Your screen must be screwed up then. The screen only draws as much power as you need, it doesn't matter if you run it off a 800mA wall wart or a 1.21 gigawatt microwave power plant. The wall wart is just designed to provide enough for both simaltaneously.

superdeformed · Post by **superdeformed** » Sun Jul 02, 2006 5:38 pm

If the AC adapter isn't regulated (it would probably say if it was) then it might be putting out too high of a voltage with only the load from the screen. It could also be that your adapter was defective, or like marshallh said your screen is just screwed up.