What would you like to do?
What supply voltage does a computer need?
Answer . because it reduces the power dissipation
There is no set amount of power every computer built will need because different parts consume different amounts of electricity. Some people have more components than ot…her people do inside their computers, like extra DVD drives and lights and things.
The usual voltages produced by the power supply in a standard personal computer system are 5 volts and 12 volts. For more information see the Related Link shown below.
When your computer will not power on. When the cooling fan of the power supply has failed. When the amount of hardware in use in your case exceeds the power ca…pability of your power supply.
In the U.S.A., 110VAC is the usual household receptacle voltage where lamps, TV's etc are connected and the computer, printer & related devices are also connected. Other count…ries may have different operating voltages required for computers.
Conceivably, if you were right at the point of maxing out your old power supply and you gained additional speed by having more ram, you might increase the power demand e…ver-so-slightly by allowing the computer to function faster. Possible but not likely. While you have the case open, it wouldn't hurt to blow dust out of the power supply. Overheating because of dust buildup is as hard on it as anything.
This is from HP's website: DescriptionIf you are using a voltage adapter [I think they mean voltage "converter"] to work outside the US, you may have difficulties… charging the battery and other power anomalies. SolutionHP and Compaq power adapters are setup for World Wide voltage and frequency specs. They do not require any power conversion. Plugging our adapters into any sort of power converter may cause the adapter to malfunction.The only adapter needed to use our AC adapter in a foreign country is a plug adapter to make the plug fit the wall receptacle.
The power supply in a PC is a complex device using switch mode circuitry and transformers to generate +and- 12v, for modems and communications ports. +and-5volts for the… logic circuitry,3volts for the processor. All these supplies are generated and electronically regulated. It is such a waste when they are thrown a way still working. They are mini masterpieces of electronic engineering and are capable of starting a car!
EMachines are notorious for coming with under-powered power supplies, and several fires have been known to occur due to overheating and overloading of the PSU. In general, as… a professional repair technician, I would say ALL eMachines need a new PSU on purchase. However symptoms of a direct PSU failure are: Failure to turn on (No fans, no lights, no noise) Crashing or instability, especially during heavy use Strange noises (high pitched whines, 'buzzing') Excessive heat from the PSU (exceeding 140 degrees F) Upgrading ANY component to a higher-powered component, or adding any new high-draw peripherals (even external hard drives that are not self-powered) can cause an immediate overload of a PSU. Troubleshooting a PSU involves removing all non-essential components (wireless cards, NIC cards, extra memory, hard drives, video cards [if onboard is present and useable], extra fans or cooling [NOT the CPU fan!!!], external components, etc. If it suddenly begins working with objects removed, it is likely a shortage of power. Keep in mind some other malfunctions can mimic PSU problems, such as failing motherboards, overheating, and bad RAM.
Your power supply unit, PSU. Takes AC power and distributes so much power to each connector. Each PSU, depending on the wattage of the unit gives each connector so much vo…ltage. Each connector is designed for a certain piece of hardware that requires different voltage.
On each Hard-disk, CD-Player, Component of your computer you will find information in as to how many watts of power they consume. It may be printed on components but more typi…cally in the user-guide accompanying it. The processor is a separate component of which can draw as much as 130 Watts, although mostly 65-95 watts. When you have calculated together All the wattage from all different components in your computer, then you know the absolute minimum power your computer can be started with. A computer these days typically spend 300 watts or more. Only some screen-cards may eat as much as 300 watts. lol If you have many Hard-disks in your system, then the Watt Drain at start is a lot more than your calculated wattage. This because they consume a lot more when starting to spin up. In a normal computer system I would not use a power supply that is less than 20% above calculated power drain. Some computer systems with many Hard-disks does not start unless you have 50% more than actually needed.
The two outside contacts (of four contacts) are connected to the power supply in the computer.
Hit your computer with a bat until it opens up and you can find it that way. It is ok if only 2 parts break they r likely not important
Depending on the power supply, +12, -12, +5, - 5 and ground. Some also use 3.3.
The computer requires it to distribute power to all the components.
A good computer lab power supply has a battery backup that gives you a few minutes to save your stuff when the power goes out.