Power Supply

adicuasay wrote:

How to install a computer power supply?

To install a power supply in your computer, follow the steps and guidelines below.

Before getting started
Write down important information from the top or bottom of the power supply, such as the Model Number, Serial Number and specifications (e.g., voltage and watts).
Ensure you are familiar with ESD and its potential dangers.
When installing a power supply, turn the computer off and disconnect the cord connected to the power supply.
Remove previous power supply
If you are replacing a power supply inside the computer, it needs to be removed. First, disconnect the power supply from all the devices it is powering inside the computer, including the motherboard and any internal drives. Next, locate all screws that fasten the power supply to the case and remove them. Then, slide the power supply out and remove it from the computer.

Install power supply
Once no power supply is installed in the computer, place the new power supply into the computer and fasten the screws into the back of the power supply. Some computer cases also have a screw inside the computer case. If present, also fasten a screw into this hole.

Connect cables
Once the power supply has been physically installed into the case and screws fastened, attach the power supply cable from the power supply to the motherboard. Next, connect each of the power connectors for the hard drive, cd drive, floppy drive and any other peripherals.

Troubleshooting
Computer power supply help and support.

adicuasay wrote:

If one have a bad power supply, should repair it or replace it?

If after troubleshooting your computer power supply you determine that the power supply is bad, we recommend that it be replaced. Because of the potential hazards associated with repairing a power supply most computer repair shops and computer companies do not repair power supplies and instead replace them for new ones.

mlskjames wrote:

ano yung linear voltage regulator ?

In electronics, a linear regulator is a system used to maintain a steady voltage. The resistance of the regulator varies in accordance with the load resulting in a constant output voltage. The regulating device is made to act like a variable resistor, continuously adjusting a voltage divider network to maintain a constant output voltage and continually dissipating the difference between the input and regulated voltages as waste heat. By contrast, a switching regulator uses an active device that switches on and off to maintain an average value of output. Because the regulated voltage of a linear regulator must always be lower than input voltage, efficiency is limited and the input voltage must be high enough to always allow the active device to drop some voltage.

mlskjames wrote:

meron bang programmable power supply ?

yes. A programmable power supply is one that allows remote control of its operation through an analog input or digital interface such as RS232 or GPIB. Controlled properties may include voltage, current, and in the case of AC output power supplies, frequency.

Ryan Joshua Verano wrote:

Pano ko po lilinisin ang power supply?

Step 1
Shut down and unplug your computer. Never clean the inside of your PC while it is running or plugged in; this can result in accidental electric shock or other such injuries. Wait for your computer to cool down if it has been running for a prolonged period prior to shut down. This action will help you avoid burning yourself. Wait at least 1 hour to ensure that all internal components are cooled off.

Step 2
Unscrew and remove your computer's access panel. Generally speaking, PCs have 1 main, large access panel. It is located at different positions, depending on your computer's model. The access panel is easy to identify; it is basically a large removable sheet of metal or plastic screwed onto your PC's main body.

Step 3
Find the power supply by looking for the place that your computer's power cable goes into. The power supply is also recognizable because of the large fan it contains. This fan is visible both on the inside and outside of the computer. Its external, grated face will typically be about the size of a compact disc.

Step 4
Use a 12-oz. can of compressed air with a nozzle to blow dust and dirt off the power supply. Hold the nozzle about 2 inches from the surface you're cleaning and always blow from the inside of the PC outward. Blow the air through the natural holes and air channels of the power supply's fan, shooting dust out of the PC. Dust for about 1 to 2 minute, using short bursts of air.

Step 5
Let the dust settle, and then shoot air through the power supply again to see if more dust comes out. If there is still dust, use the compressed air duster for another minute and wait for the dust to settle again. Repeat dusting until no visible dust comes out of the power supply. Place the access panel back on your computer and screw it back in

mlskjames wrote:

ano yung linear voltage regulator ?

In electronics, a linear regulator is a system used to maintain a steady voltage. The resistance of the regulator varies in accordance with the load resulting in a constant output voltage. The regulating device is made to act like a variable resistor, continuously adjusting a voltage divider network to maintain a constant output voltage and continually dissipating the difference between the input and regulated voltages as waste heat. By contrast, a switching regulator uses an active device that switches on and off to maintain an average value of output. Because the regulated voltage of a linear regulator must always be lower than input voltage, efficiency is limited and the input voltage must be high enough to always allow the active device to drop some voltage.

casison wrote:

What is a power converter?

A power converter is an electrical circuit that changes the electric energy from one form into the desired form optimized for the specific load. A converter may do one or more functions and give an output that differs from the input. It is used to increase or decrease the magnitude of the input voltage, invert polarity, or produce several output voltages of either the same polarity with the input, different polarity, or mixed polarities such as in the computer power supply unit.

adicuasay wrote:

Where is the power supply located in a computer?

The power supply can be found at the upper left corner of the system unit if you will open the system case.

adicuasay wrote:

What is a power supply?

A power supply is a component that supplies power to at least one electric load. Typically, it converts one type of electrical power to another, but it may also convert a a different form of energy – such as solar, mechanical, or chemical - into electrical energy.

A power supply provides components with electric power. The term usually pertains to devices integrated within the component being powered. For example, computer power supplies convert AC current to DC current and are generally located at the rear of the computer case, along with at least one fan.

A power supply is also known as a power supply unit, power brick or power adapter.

mlskjames wrote:

ano yung linear voltage regulator ?

In electronics, a linear regulator is a system used to maintain a steady voltage. The resistance of the regulator varies in accordance with the load resulting in a constant output voltage. The regulating device is made to act like a variable resistor, continuously adjusting a voltage divider network to maintain a constant output voltage and continually dissipating the difference between the input and regulated voltages as waste heat. By contrast, a switching regulator uses an active device that switches on and off to maintain an average value of output. Because the regulated voltage of a linear regulator must always be lower than input voltage, efficiency is limited and the input voltage must be high enough to always allow the active device to drop some voltage.

Linear regulators may place the regulating device in parallel with the load (shunt regulator) or may place the regulating device between the source and the regulated load (a series regulator). Simple linear regulators may only contain a Zener diode and a series resistor; more complicated regulators include separate stages of voltage reference, error amplifier and power pass element. Because a linear voltage regulator is a common element of many devices, integrated circuit regulators are very common. Linear regulators may also be made up of assemblies of discrete solid-state or vacuum tube components.

Ryan Joshua Verano wrote:

Is it okay na tanggalin ang case ng power supply?

As long as it is not running. Kung gagagamitin mo, mas maganda if may case siya kasi baka may mawalang parts.

Answering a question by adicuasay
If one have a bad power supply, should repair it or replace it?

It depends on the person.
If a user has a defective power supply, he/she should check it first to see if it can be fixed/repaired( this applies to people who want to save money). Some problems of the power supply are caused by a little damage on its cables that can be easily fixed or repaired. However there are situations that your power supply has multiple problems/ a very serious problem that repairing it will cost more than just buying new one.
If you believe that buying a new power supply is more efficient than wasting your time and money to an old/defective power supply that may not work again, then buy a new one

Answering the question:
Possible po bang masira yung computer kapag una ko po isara o iturn off yung power supply kahit naka bukas pa yung computer?

It depends sa version ng windows.
Kasi yung older versions ng windows ay maaaring magcause ng data loss, file corruption, or even hardware failure. Yun ay dahil hindi nahanda ng os na itigil yung process ng computer. Halimbawa kung nasa kalagitnaan ng isang process yung computer mo then pinatay mo instantly, sa next bukas mo ng computer mo yung last na process young mareretain sa kaya na maaaring 'maconfuse' yung mechanism. Then maaaring masira young hardware component mo.
Pero young newer versions ng windows ay may tinatawag na advanced configuration and power interface (ACPI). Yung feature na ito ay nagsesend ng signal from the power button to the computer, telling it to perform a shutdown for itself.

What type of current is used in power supplies?

mlskjames wrote:

ano yung linear voltage regulator ?

linear regulator is a system used to maintain a steady voltage. The resistance of the regulator varies in accordance with the load resulting in a constant output voltage. The regulating device is made to act like a variable resistor, continuously adjusting a voltage divider network to maintain a constant output voltage and continually dissipating the difference between the input and regulated voltages as waste heat. By contrast, a switching regulator uses an active device that switches on and off to maintain an average value of output. Because the regulated voltage of a linear regulator must always be lower than input voltage, efficiency is limited and the input voltage must be high enough to always allow the active device to drop some voltage.

DavidUyTheDCBU wrote:

What type of current is used in power supplies?

Alternating current is generated by electrons flowing in alternating directions. Direct current is generated by electrons flowing in only one direction. AC is also called mains electricity, household current, domestic power, line power, or wall power because it is the voltage supplied by a wall outlet.

How does PSU differ from UPS?

Answering a ques by zeke: How does PSU differ from UPS?

Spelling of course. Jk.
The difference between the two voltages is because charging a battery requires a delta voltage (up to 13–14 V for charging a 12 V battery). ... In low-voltage conditions the UPS will use more current than normal so it may need a higher current circuit than a normal device.

Can an UPS be used as a substitute for PSU?