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how does power supply unit work?
Name: stimulator Date: August 9, 2002 at 01:40:47 Pacific
Comment:
how does a power supply unit work? i have a 220v PSU.. does it mean that it suck out 220v from my home electrical supply or it just uses as much as it is need? like 12v for the motherboard , 5v for the fan...? does it work that way? thanks
Name: chnos Date: August 9, 2002 at 04:23:46 Pacific
Reply:
it gives a constant supply for hardwares, changing 220v into differents
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Response Number 2
Name: Jon Date: August 9, 2002 at 06:51:34 Pacific
Reply:
First off power supplies are usually measured in watts and not volts. Some of them do have switches on the back that allow them to be used in Europe or in the U.S. by choosing if the wall outlet they are plugged into is 110 or 220 volts. Which type of outlet you plug your power supply in to doesn't affect its power at all.
Say your power supply is rated at 300 Watts that means that it can give out 300 watts of power at a peak. A Watt is a unit of power and power corresponds to voltage times current. So you could have two different components that both operate on a 5v line but they use different amounts of current, the same device may not always use the same amount of current, so they will use up different amounts of power.
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Response Number 3
Name: ftpe Date: August 9, 2002 at 07:27:33 Pacific
Reply:
ya man, OHM's LaW!!
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Response Number 4
Name: Art Smass Date: August 9, 2002 at 16:01:18 Pacific
Reply:
stimulator, Where you live are residences powered by 110 or 220? You can think of voltage as electrical pressure. If anything is being "sucked" out of your wall outlet it would be current, not voltage. You could probably expect that as you increase the load on your supply (for instance by adding a few fans), that there will be more demand for current from the electrical outlet in your home.
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Response Number 5
Name: stimulater Date: August 12, 2002 at 00:57:00 Pacific
Reply:
The problem is now my house has a very low power voltage measuring at 100v+ I can't even switch on the room lights.. or the air conditioner.. i live in Asia.
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Response Number 6
Name: Art Smass Date: August 19, 2002 at 18:03:03 Pacific
Reply:
stimulator, I only checked this post again today. I had given up on you. It sounds like the power being supplied to you house is too low. This happens in some countries. You need to look on your power supply for a switch that will let you select between 110V and 220V. If it has one, make sure it is set to 110V. I hope this will help. Art
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