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Generally, there will be a 12+ volt rail, a 5+ volt rail and often a 3+ volt rail.

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14y ago
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7y ago

DC current.

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Q: The output voltage from a PC power supply are?
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What could go wrong if you change the voltage on a PC power supply?

the computer will not switch on. May be the SMPS fail leading to a huge spark.


How do you use a PC power supply for a car amp?

You will need old comp power supply. +12 V is on YELLOW wires. -(minus) or ground is BLACK If you have ATX power supply (that one without wires going to power switch on front - all PC now have ATX) you have to short GREEN and BLACK on main (the biggest plug to start power supply. So use any pair black/yellow to power car amplifier.


What supply voltage does a computer need?

It all depends on the machine PSU(Power Supply Unit), usually 80v-150v or as I have constructed before a 20v computer so it's the same as saying 'How long is a piece of string?'- The Computer power supply takes in the 120-240 volts coming from the A/C outlet and reduces it to 18 volts D.C. to run the System board and peripheral's in the case, i.e. DVD ROM, CD ROM, HDD, Graphics card and CPU fan. Your monitor as well runs on 18 V.D.C. which is again reduced from the 120 - 240 volts A.C. through the power block, (transformer).


Which device you should use to prevent the effects of fluctuation in the power supply on your PC and to continue to work for a specific time even if there is no power?

Uninterruptable Powersupply


What would happen if ammeter were connected directly across a voltage source?

An ammeter measures current by either being inserted in series with the load being measured or using a clamp-on device that induces a proportional current that the meter measures. Nothing should happen if you connect an ammeter across a voltage source unless it was very high voltage compared to the rating of the meter.

Related questions

How do rectifiers and transformers work in a PC power supply?

There is no transformer used in PC power supply. There is rectifier used to rectify or convert AC input voltage into DC output voltage.Transformer based rectifier produces some spikes at the output DC voltage, hencethey uses SMPS (Switch Mode Power Supply) to avoid spikes to the output DC voltage and get a smooth DC voltage.


What is voltage required for desktop?

Desktop computers all come with a power supply that changes the mains voltage in your country's electricity supply to that needed inside the PC. Thus the Voltage used by your PC is the mains voltage in the country where the PC was sold.


Basides proviing the PC with the correct voltage the power supply also performs what additional task?

The power supply unit provides the PC with "clean" power at the correct voltage levels.Related Information:The PC has two main power requirements. Its power must be:a) at the correct voltage.b) smooth (the typical maximum deviation is +-5%).


Is -5v for -12v voltage on 600W power supply of my desctop PC ok?

yes


Does a computer's power supply generate electricity?

In short, no. The power supply takes the alternating mains voltage and reduces it to the low voltages and direct current needed by the components of your PC.


What type of electricity is output FROM the PC power supply?

Direct Current or DC after it leaved SMPS (Switched Mode Power Supply). On a laptop computer the charger/power supply is a single voltage, around 19 volts DC (depending on model no.) On desk top computers, the PC Power supply has several different DC voltages and different wattage capacities. They are +5v +12v - 12v -5v +3.3v Loads of different coloured wires and plugs take the power to the motherboard, hard drives, optical drives and some graphics cards.


4 What is the difference between a transformer and a rectifier Which are found in a PC power supply?

A rectifier is a device that converts alternating current to direct current. A transformer is a device that changes the ratio fo current to voltage. A rectifier is found in a PC power supply.


How do you set up a PC in France?

On the power supply of your PC change the voltage from 110 to 220. You then need to have a European power cable, and plug it in like you would in the states. Everything else is exactly the same.


The purpose of the power supply in a PC is to?

The hardware in a computer need electric to run, this gives it the power that all the hardware needs and each connector has a certain voltage.


What is the main function of PC power supplies boxes?

The PC power supply box's function is to supply the computer with power. Without the PC power supply box, the computer would not be able to turn on and off.


What could go wrong if you change the voltage on a PC power supply?

the computer will not switch on. May be the SMPS fail leading to a huge spark.


How much voltage can a USB port on a PC typically supply?

5v