how do you??

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how do you??

Postby Mazza » Tue Oct 30, 2007 4:22 am

i need to know how to find out what wattage my computer uses so i can put my com specs in sig

Any help anyone??????? :-?
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Re: how do you??

Postby Fozzer » Tue Oct 30, 2007 4:35 am

How much Wattage does your Computer draw from the Public Power supply?

Connect a Watt Meter between the Computer and the wall power supply socket....

...and note the reading...;)...!

F....Watts = Volts X Amps... 8-)...!

(Using Direct Current (DC)...).

For Alternating current (AC) the formula is Watts = Volts X Amps X Power Factor.... ;)...!

When asked the question; "How do I", my reply is; "With difficulty!"

The Wattage of your Internal Power Supply Unit will be printed on the Power Supply Unit label inside the Computer...!
Last edited by Fozzer on Tue Oct 30, 2007 4:44 am, edited 1 time in total.
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Re: how do you??

Postby Mazza » Tue Oct 30, 2007 4:46 am

thanks f i can always relie on you.  

but i need to take my com out cause the side that opens is on a wall :D. but i'll do it sometime ;) :D
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Re: how do you??

Postby Brett_Henderson » Tue Oct 30, 2007 7:06 am

How much Wattage does your Computer draw from the Public Power supply?

Connect a Watt Meter between the Computer and the wall power supply socket....

...and note the reading......!

F....Watts = Volts X Amps... ...!

(Using Direct Current (DC)...).

For Alternating current (AC) the formula is Watts = Volts X Amps X Power Factor.... ...!

When asked the question; "How do I", my reply is; "With difficulty!"

The Wattage of your Internal Power Supply Unit will be printed on the Power Supply Unit label inside the Computer...!


LOL  :D    That reminds me of the first time I tried to measure current with the old Simpson 260..  I put the leads across a resistor (instead of "opening" the circuit) and that delicate needle whacked across the scale so abrubtly that the  meter "jumped"   :o

The "power factor" gives you effective AC voltage (root mean square), which is what most meters are calibrated for, anyway.  SO... if you're brave enough to open the circuit and take a current reading, you can go ahead and multiply amps X whatever voltage your meter reads, to get watts..

Brett ...(you asked for it F)..  Henderson  :D
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Re: how do you??

Postby Fozzer » Tue Oct 30, 2007 8:08 am

How much Wattage does your Computer draw from the Public Power supply?

Connect a Watt Meter between the Computer and the wall power supply socket....

...and note the reading......!

F....Watts = Volts X Amps... ...!

(Using Direct Current (DC)...).

For Alternating current (AC) the formula is Watts = Volts X Amps X Power Factor.... ...!

When asked the question; "How do I", my reply is; "With difficulty!"

The Wattage of your Internal Power Supply Unit will be printed on the Power Supply Unit label inside the Computer...!


LOL  :D    That reminds me of the first time I tried to measure current with the old Simpson 260..  I put the leads across a resistor (instead of "opening" the circuit) and that delicate needle whacked across the scale so abrubtly that the  meter "jumped"   :o

The "power factor" gives you effective AC voltage (root mean square), which is what most meters are calibrated for, anyway.  SO... if you're brave enough to open the circuit and take a current reading, you can go ahead and multiply amps X whatever voltage your meter reads, to get watts..

Brett ...(you asked for it F)..  Henderson  :D


LOL.... ;D...!

F...Electrical/Electronics Engineer (Retired). Six year Apprenticeship + 57 Years in the Trade occupation... ;)..!

AC Power Factor...The bain of an Electricians life... ;D...!
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Re: how do you??

Postby NickN » Tue Oct 30, 2007 9:02 am

i need to know how to find out what wattage my computer uses so i can put my com specs in sig

Any help anyone??????? :-?




If I read this correctly you are asking how to find the PSU watt rating of the unit in your tower so you can post it.

It should be on a sticker tag on the PSU.


What a PSU pulls in AC power and what the computer pulls in DC, and, what the PSU can deliver are 3 different things. The sticker will show you what the PSU can deliver (theoretically) and what the system needs in power is figured out by adding up the power draw specs for the devices in the system. There is no documentation for a system which will tell you exactly what all the parts in your system need or use.

If you are a trained electronics tech and know how to interrupt the main DC lines to the system (or use field probes), placing a proper scaled amp meter on each one and observing the changes as the system is used, you can figure out exactly what it is pulling from the PSU, otherwise it is an estimate based on components and you typically add at least 25% to those numbers to be sure the unit runs cool and has plenty of overhead power reserve.

As for the amount of AC current a PSU draws, that will vary based on the load the system is under (heavy use or game play) and the type of source (ie; 120VAC, 220VAC, etc), and requires the same process of intrrupting an AC line (or use a field clamp probe) to see what the unit draws in house current under different load situations.
Last edited by NickN on Tue Oct 30, 2007 9:08 am, edited 1 time in total.
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Re: how do you??

Postby congo » Tue Oct 30, 2007 7:52 pm

I think this might help, it'll give you some idea at least.

http://www.extreme.outervision.com/psuc ... orlite.jsp
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Re: how do you??

Postby Mazza » Wed Oct 31, 2007 4:50 am

i've done it but the power on the ac thingy is in a WB format


What the hell does it stand for????? :-?

F you should know
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Re: how do you??

Postby Fozzer » Wed Oct 31, 2007 7:30 am

i've done it but the power on the ac thingy is in a WB format


What the hell does it stand for????? :-?

F you should know


WB....

Water Board (South Eastern Division)... ::)...?
Warner Brothers...?
World Bank?
Women's Bureau?

Nah?...Dunno...I give up!...;)...!

F.... ;D...!
Last edited by Fozzer on Wed Oct 31, 2007 7:33 am, edited 1 time in total.
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Re: how do you??

Postby Mazza » Thu Nov 01, 2007 12:43 am

:o my computer is made by a movie company :o :o ;D

nah i don't really care. but oh well
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