by jason2012 » Fri Jan 24, 2014 4:12 pm
Hi, thanks for the reply.
Well, the loads are not so small, and a bit of an unknown factor that is the reason. I purchased a DC adapter that would continue to serve my needs if I decide to add more power hungry parts in the future, and also to avoid the risk of overload, as I wasn't sure what my final power needs would be.
The graphics card for example, pulls 200watts at peak usage on its own.
The motherboard is quite a lot less, but then there are all the other bits it has to power as well, such as the monitor, graphics adapter, hard drives, cd rom drive, and about a zillion internal fans as well.
I did a measurement once a while ago, and i think the motherboard load was about 10 amps in total.
I understand that a beefy relay may be required, but trust me on this one, it wouldn't be the beefiest part in the whole system. The 19v to 12v dc converter for example, is massive.