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Shaira Ibel Gamueda
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Posts : 33
Join date : 2018-08-11
Age : 19

PostSubject: Re: Power Supply   Tue Aug 28, 2018 9:45 am

ejaccion wrote:
mag katulad ba ng power supply ang computer at laptop o battery lng ung sa laptop di tulad sa computer?

The AC Adapter, a power supply and a charger in reference to a laptop computer: all three functions are handled by the device's external power device. With laptops, all three names refer to the same device that's commonly referred to as a "power brick." There are other devices that individually serve as internal power supplies, external power supplies and battery chargers; however, all laptop power units provide both power and charging functions from an external source.

While in Desktop Computer, a power supply or PSU is a device or component that takes energy from an Alternating Current electricity source and converts it into usable Direct Current for another electronic device. The power supply also makes sure that the computer doesn't receive too much or too little electricity, which could cause the system to fail or break. The term "power supply" is typically associated with desktop computers and refers to a component braced to and housed inside the computer case. Internal power supplies are rectangular or cubed shape and run several inches in all directions; they usually have built-in fan cooling units that expel hot air from the rear side of the computer case.

Any questions regarding of these, ejaccion? Kindly reply or pm me here!
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rafaelaespejo29



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Join date : 2018-09-22

PostSubject: Re: Power Supply   Sat Sep 22, 2018 7:22 pm

Facts: power supply converts AC current to DC current
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rafaelaespejo29



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PostSubject: Re: Power Supply   Sat Sep 22, 2018 7:24 pm

How to protect the power supply against over voltages or surge voltages?
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rafaelaespejo29



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PostSubject: Re: Power Supply   Sat Sep 22, 2018 7:31 pm

How to test power supply?
Shut down your computer. ...
Open your computer case. ...
Make a paper clip tester. ...
Find the 20/24 Pin connector that normally attaches to your computer's motherboard. ...
Find the green pin and a black pin (pins 15 & 16). ...
Insert the paperclip.
Check the fan.
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Jemart del Pilar



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Join date : 2018-08-19

PostSubject: Re: Power Supply   Tue Sep 25, 2018 8:25 am

mlskjames wrote:
ano yung linear voltage regulator ?

To understand how linear regulators work, imagine that the output voltage is the level of water in a tank and the output current is a leakage. To maintain the level in the tank, the same flux of water must enter the tank as the one that is leaking. To control the influx, we have two options: either strangle the influx to match the leakage or divert any influx that may be exceeding the leakage to another path.

Linear regulators are a great choice for powering very low powered devices or applications where the difference between the input and output is small. Even though they are easy to use, simple and cheap, a linear regulator is normally inefficient.

The equation for dissipated power in a linear regulator is:
Power dissipation = (input voltage – output voltage) × load current
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Jemart del Pilar



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PostSubject: Re: Power Supply   Tue Sep 25, 2018 8:29 am

Ryan Joshua Verano wrote:
Pano ko po itetest ang power supply ko kung working siya

Testing a power supply manually with a multimeter is one of two ways to test a power supply in a computer.

A properly executed PSU test using a multimeter should confirm that the power supply is in good working order or if it should be replaced.

Note: These instructions apply to a standard ATX power supply. Almost all modern consumer power supplies are ATX power supplies.

Open your case. In short, this involves turning off the computer, removing the power cable, and unplugging anything else connected to the outside of your computer.

Group all of the power cables and connectors together for easy testing.
As you're organizing the power cables, we highly recommend rerouting them and pulling them as far away from the computer case as possible. This will make it as easy as possible to test the power supply connections.
Short out pins 15 and 16 on the 24-pin motherboard power connector with a small piece of wire.
You'll probably need to take a look at the ATX 24-pin 12V Power Supply Pinout table to determine the locations of these two pins.

Confirm that the power supply voltage switch located on the power supply is properly set for your country.
Note: In the US, the voltage should be set to 110V/115V. Check the Foreign Electricity Guide for voltage settings in other countries.
Plug the PSU into a live outlet and flip the switch on the back of the power supply. Assuming that the power supply is at least minimally functional and that you've properly shorted the pins in Step 5, you should hear the fan begin to run.
Important: Just because the fan is running does not mean that your power supply is supplying power to your devices properly. You'll need to continue testing to confirm that.
Note: Some power supplies do not have a switch on the back of the unit. If the PSU you're testing does not, the fan should begin to run immediately after plugging the unit into the wall.

Turn on your multimeter and turn the dial to the VDC (Volts DC) setting.
Note: If the multimeter you're using does not have an auto-ranging feature, set the range to 10.00V.
First, we'll test the 24-pin motherboard power connector:

Connect the negative probe on the multimeter (black) to any ground wired pin and connect the positive probe (red) to the first power line you want to test. The 24-pin main power connector has +3.3 VDC, +5 VDC, -5 VDC (optional), +12 VDC, and -12 VDC lines across multiple pins.

You'll need to reference the ATX 24-pin 12V Power Supply Pinout for the locations of these pins.
I recommend testing every pin on the 24-pin connector that carries a voltage. This will confirm that each line is supplying the proper voltage and that each pin is properly terminated.
Document the number that the multimeter shows for each voltage tested and confirm that the reported voltage is within approved tolerance. You can reference Power Supply Voltage Tolerances for a list of proper ranges for each voltage.

Turn off the switch on the back of the power supply and unplug it from the wall.
Reconnect all of your internal devices to power. Also, don't forget to remove the short you created in Step 5 before plugging back in the 24-pin motherboard power connector.

Plug in your power supply, flip the switch on the back if you have one, and then turn on your computer as you normally do with the power switch on the front of the PC.

Once your testing is complete, turn off and unplug the PC and then put the cover back on the case.
Assuming your power supply tested good or you've replaced your power supply with a new one, you can now turn your computer back on and/or continue troubleshooting the problem you are having.

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choychoy



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Join date : 2018-09-30

PostSubject: Re: Power Supply   Sun Sep 30, 2018 10:46 am

"1.5 × PSU watts + Other components" Formula para malaman mo ang kailangan mong wattage sa supply mo
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karl cotillon



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Join date : 2018-09-30

PostSubject: Re: Power Supply   Sun Sep 30, 2018 4:13 pm

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