Battery voltage modifiers

elixirnova · Post by **elixirnova** » Wed Jul 20, 2005 11:49 pm

Hrm Dont have a clue if this is the right forum but here it goes...
On my pstwo portable I have a pstwo that runs off of 8.5V I think (correct me if im wrong) and a screen that runs on 7.5V. Ive heard of voltage regulators and DC-DC converters? When i go looking for a battery(ies) how many Volts should it be to get best performance/battery life? Any help plez

nos_slived · Post by **nos_slived** » Wed Jul 20, 2005 11:56 pm

What screen are you using?

elixirnova · Post by **elixirnova** » Thu Jul 21, 2005 12:07 am

intec psone lcd(the one that the psone actually cradles into)

nos_slived · Post by **nos_slived** » Thu Jul 21, 2005 12:20 am

That screen can run on anything from 7.2V to almost 9V, so if you get a battery that can power the PS2, you don't need a convertor for the screen.

elixirnova · Post by **elixirnova** » Thu Jul 21, 2005 12:24 am

Well the most common batteries i can find are 7.2V and 9.6V both being either too little or too big? Would it hurt the lcd if I ran it at 9.6V?

nos_slived · Post by **nos_slived** » Thu Jul 21, 2005 1:02 am

The picture would be completely screwed, and I don't know if the PS2 an run on 9.6V.

usbcd36 · Post by **usbcd36** » Thu Jul 21, 2005 12:01 pm

A fully-charged 7.2v battery actually puts out a few more volts than listed, so you should be fine. I believe the output of a 7.2v Ni-Mh is about 9v or so.

elixirnova · Post by **elixirnova** » Thu Jul 21, 2005 11:15 pm

so should i get two of the rc 7.2V batteries ya think? and use no regulators of such?

daguuy · Post by **daguuy** » Thu Jul 21, 2005 11:21 pm

DVD payer batteries are great. i have one that's 8.4v that could probably power a PS2 (not for sale though

) maybe you could get a similar one

th3c4rd · Post by **th3c4rd** » Fri Jul 22, 2005 8:37 am

You can get one of those batteries at Radio Shack for about $80, a little expensive, but it's what im using in mine (still building though, but i've tried it powering the screen, and it works fine)

elixirnova · Post by **elixirnova** » Fri Jul 22, 2005 8:49 am

A Like to which you are talking of? How many Ah does it contain?

daguuy · Post by **daguuy** » Fri Jul 22, 2005 9:05 am

my battery? 4200mah

th3c4rd · Post by **th3c4rd** » Fri Jul 22, 2005 9:14 am

6000mAh is the one I got from Radio Shack. somehting like Enduance portable DVD Battery... out of the case it looks like the battery that ben used in his PS2p(led battery life moniter, etc.)

usbcd36 · Post by **usbcd36** » Fri Jul 22, 2005 9:39 am

elixirnova wrote:so should i get two of the rc 7.2V batteries ya think? and use no regulators of such?

Anyone know what the dropout voltage for a LM317T regulator, because that would provide the right voltage (about 7.2v) for a screen and would also be correct for a pstwo (because the output is a little above what is listed).

elixirnova · Post by **elixirnova** » Fri Jul 22, 2005 10:55 am

Hrm I just thought of somthing.
If I wanted to run this off an AC Adapter.
What does the pstwo wall plug output? for the console?
Because it sounds like I could simply hook the screen directly up to the pstwo's power source if they are boht 8.5V? Or do i need some UF's of sort or do I need a 7808? for hte screen?