Capcom I/O V-V-VOLTAGE!

OldFoo · Post by **OldFoo** » Tue Sep 02, 2008 6:08 am

BDT wrote:but you said something about the voltage loss? I can't do anything else that buy a new PSU?

you can get voltage loss across cables,we used to counter this by adding more cables or thicker gauge wire

this is unlikely to work in your situation as the psu is only outputting 5.4

the mose likely fault with your psu is a bad electrolitic capacitor

OldFoo · Post by **OldFoo** » Tue Sep 02, 2008 7:45 am

What should be the output voltage minimum without anything connected? around 6V?

OldFoo · Post by **OldFoo** » Tue Sep 02, 2008 1:40 pm

Maybe another solution: Separate NAOMI PSU to power NAOMI1. I'm ready for a GD-ROM setup in that way, so why not.

I believe you can make a NAOMI PSU with a standard PC 200W PSU.

Any need for the separate voltages 3,3V, 5V and 12V? How can I make this? Or maybe better: where can I buy one?

This will work, right?

OldFoo · Post by **OldFoo** » Tue Sep 02, 2008 4:49 pm

seperate psu to run the naomi is an option i have actually used in the past

OldFoo · Post by **OldFoo** » Tue Sep 02, 2008 5:09 pm

grantspain wrote:seperate psu to run the naomi is an option I have actually used in the past

Agreed.

Wei-Ya makes a dedicated +3.3v psu; I've actually got an extra one if you want it for $25. That, coupled w/a new PSU from Happ should set you up quite nicely. (Happ probably sells the 3.3v psus as well, and surely a combo)

Or, you could go the PC ATX > Naomi PSU route as well, though the downside to that being you can't adjust your voltages.

OldFoo · Post by **OldFoo** » Tue Sep 02, 2008 8:29 pm

BDT wrote:What should be the output voltage minimum without anything connected? around 6V?

Measuring voltage on a psu without a load (disconnected) is not a reliable way of testing for a problem. It's just like testing a AA battery that is near dead and reading 1.5v, but it doesn't work correctly when placed in a device. :smt018

OldFoo · Post by **OldFoo** » Thu Sep 04, 2008 8:51 am

maxchainsplendid wrote:
grantspain wrote:seperate psu to run the naomi is an option I have actually used in the past

Agreed.

Wei-Ya makes a dedicated +3.3v psu; I've actually got an extra one if you want it for $25. That, coupled w/a new PSU from Happ should set you up quite nicely. (Happ probably sells the 3.3v psus as well, and surely a combo)

Or, you could go the PC ATX > Naomi PSU route as well, though the downside to that being you can't adjust your voltages.

Is there any tutorial to make a NAOMI PSU out of a PC PSU?

OldFoo · Post by **OldFoo** » Thu Sep 04, 2008 6:12 pm

If you want to make your own, I'll teach you - no problem :] Perhaps I should just write a tutorial in the faq tech section...

Just a note to anyone interested in this though - it does work, but you lose the ability to adjust your voltages. So if you do it, be sure to check the V coming off the psu you choose, to make sure you're not under/over powering. (ideally you want 5.1 - 5.13)

OldFoo · Post by **OldFoo** » Fri Sep 05, 2008 7:48 pm

The voltage will be a problem then. Which brand PSU will do the trick best?

OldFoo · Post by **OldFoo** » Sat Sep 06, 2008 12:40 am

maxchainsplendid wrote:Just a note to anyone interested in this though - it does work, but you lose the ability to adjust your voltages. So if you do it, be sure to check the V coming off the psu you choose, to make sure you're not under/over powering. (ideally you want 5.1 - 5.13)

ATX type psu's have electronics to fiercely maintain the output voltages. So 'over-powering' shouldn't be too much of an issue.