Opus Power Limits

mhermann · 05-21-2003, 09:10 PM

I have aquestion for those of you with an Opus. I need to power the following:

MOBO
CPU + Heat Sink
1 Fan
Hard Drive
PCI Video Card
Wireless Lan

Now I know from talking to Kris(Opus Guy) this can be done no problem. But I also want to add the following external items:

USB DVD Drive
7" VGA Screen
USB Hub

In order to wire these to the Power Supply I have to cut open the Wires for the included power cables and wire them into the Opus. Can the Opus handle that much? I think it can handle the total Watts, but the guy who is going to install it for me said that the total amps (I think) would be like 6+ and the Opus has a Max of 5. Can anyone who understands what I am trying to ask clarify this?

Thanks

mhermann · 05-21-2003, 10:45 PM

Sorry for replying to my own thread but I did some more research and I guess I have another question. On the box on one of the power cords (a regulator?) It says Output: +5v 3.0A, 12v 2.0A.

Does this mean I need to take into account both the 12v and 5v into my total amp calculation?

So according to the Telek's Calculator

http://www.mymp3car.com/MP3Car/PSUpower.asp

I require 4.75A on the 5v, 2.7A on the 12v. I then need to add these 3 devices I mentioned above. My total watts is about 142. But my 12v is like 6A. Not sure what to do or if I am even in the right ball park.

frodobaggins · 05-22-2003, 02:15 AM

The Opus power supply can have max of these values on the rails

+3.3v 10A max, 15A peak

+5v 12A max, 15A peak

+12v 5A max, 6.5A peak

-12v .2A max, .4A peak

+5VSB 1A max, 1.2A peak

Keep in mind the peak Amps are only for a split second, like for when peripherals need a high startup current.

Add up all your parts and make sure you don't exceed the rating on any rail, and you'll be fine.

mhermann · 05-22-2003, 03:03 PM

Well it looks like am going to be over the Max on the 12v line. What other way can I power my DVD player. Will using an inverter for just this piece introduce noise into the system?
My total Amps on the 12v will be about 5.9 a little too high. Any suggestions?

How can I hack the AC adaptor and plug it into the opus? Any ideas?

samc · 05-22-2003, 10:55 PM

you know mhermann I didnt reply to your post but you got PM with answers.

mhermann · 05-23-2003, 07:06 PM

Thanks for your PM SAMC. You and a couple other users PM'd me. I got all the info that I needed. I just want to say that this board is filled with great and helpful users.