Solve : Power Supplys help?

1.	Solve : Power Supplys help?
Answer» Useful addition BC_ - thanks. Makes me think I should REFER to a rail output current as not only MAX - but the critical word would be "sustained" - because as you say peak very short term surges usually can be tolerated. Overall tho, as with any power delivery system - keeping demand well below the unit max potential is always desirable - thus the reason for over rating when choosing what power factor to install. It should increase unit life and run that bit cooler too.Ok I think I am getting the way Power Supplys work and how I sould read the ratings. I am GOING to have a lot of Hard Drives inside the PC and I came up with the Total Wattage for them is 18 Watts. Now when I look at Power Supplys I see one Output Rating for + 12 Volts at 60 Amps 12 X 60 = 720 Watts So I thought that will be more then I need for all my Hard Drives. Then I remembered that I need an ATX Power Supply and they give - 12 Volts I think??? I just wanted to run this by anyone that can help???What I should have asked is Power Supplys give 3V 5V and 12V They are all = Volts or they are all - Volts ATX are all - Volts right???Quote Ok I think I am getting the way Power Supplys work and how I sould read the ratings. I don't think this is true YET...OK I think if I tell you ware I am getting my Information about Power Supplys then you can help me more. I when to wikipedia.com and looked up Power Supplys and they say this? The Intel CPUs ran on 3.3 Volts and the ATX Power Supply Standard supplyed three Positive Rails + 3.3 Volts + 5 Volts and + 12 Volts. Then the Pentium 4. came out and used + 12 Volts from a connecter called P4. Then they say all new Computers run everything off the + 12 Volts and they added more + 12 Volt Rails. Ok I get everything so far and this is why I see a lot of Power Supplys with say three + 12 Volts and eatch one has a diferant Amp Ratting. Do I have all of this right?? Hahahahahahah - he's doing it again - hahahahahahah Have a look at this lot not so long ago...Ok I just when to PC Power and COOLING Web Site and I see a lot of pecs for Power Supplys that have 2. + 12 Volts and 1. - 12 Volt Was I right about what I found on Wikipedia about +12 Volts is for MOTORS and Drives and not everything needs +12 Volts. And they added more +12 Volts because everything needs it??

Answer»

Useful addition BC_ - thanks.

Makes me think I should REFER to a rail output current as not only MAX - but the critical word would be "sustained" - because as you say peak very short term surges usually can be tolerated.

Overall tho, as with any power delivery system - keeping demand well below the unit max potential is always desirable - thus the reason for over rating when choosing what power factor to install. It should increase unit life and run that bit cooler too.Ok I think I am getting the way Power Supplys work and how I sould read the ratings.

I am GOING to have a lot of Hard Drives inside the PC and I came up with the Total Wattage for them is 18 Watts.

Now when I look at Power Supplys I see one Output Rating for + 12 Volts at 60 Amps
12 X 60 = 720 Watts
So I thought that will be more then I need for all my Hard Drives.

Then I remembered that I need an ATX Power Supply and they give - 12 Volts I think???

I just wanted to run this by anyone that can help???What I should have asked is Power Supplys give 3V 5V and 12V

They are all = Volts or they are all - Volts

ATX are all - Volts right???Quote

Ok I think I am getting the way Power Supplys work and how I sould read the ratings.

I don't think this is true YET...OK I think if I tell you ware I am getting my Information about Power Supplys then you can help me more.

I when to wikipedia.com and looked up Power Supplys and they say this?

The Intel CPUs ran on 3.3 Volts and the ATX Power Supply Standard supplyed three Positive Rails + 3.3 Volts + 5 Volts and + 12 Volts.

Then the Pentium 4. came out and used + 12 Volts from a connecter called P4.

Then they say all new Computers run everything off the + 12 Volts and they added more + 12 Volt Rails. Ok I get everything so far and this is why I see a lot of Power Supplys with say three + 12 Volts and eatch one has a diferant Amp Ratting.

Do I have all of this right??

Hahahahahahah - he's doing it again - hahahahahahah

Have a look at this lot not so long ago...Ok I just when to PC Power and COOLING Web Site and I see a lot of pecs for Power Supplys that have 2. + 12 Volts and 1. - 12 Volt

Was I right about what I found on Wikipedia about +12 Volts is for MOTORS and Drives and not everything needs +12 Volts.

And they added more +12 Volts because everything needs it??

Solve : Power Supplys help?

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