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power unit voltage
Name: dave Date: November 28, 2003 at 03:22:20 Pacific OS: xp pro CPU/Ram: 512 mb
Comment:
I have an old PSU and am not sure how much power it really holds. It is markede "200-240". Don't PSUs have a specific voltage?
Name: Stuart Date: November 28, 2003 at 03:45:22 Pacific
Reply:
If it is marked 200-240 that will be the voltage it will take. Fine for Europe but no good in the US. There was a time that mains voltage in Europe varied between 210 and 250 volts. Europe has now standerdised on 230 volts.
More modern power supplies have a switch where you can switch between 110 volts for the US and 230 volts for Europe.
Power is a different thing altogether and is measured in Watts. Watts is the maximum power the PSU can deliver. There should be another label on the powere supply detailing the power output.
Stuart
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Response Number 2
Name: davesqr Date: November 28, 2003 at 20:46:19 Pacific
This equates to 73.2 Watts. This is a very low power power supply. Modern power supplies are 20A+ on the 5v rail and 10A+ on the 12v rail. Also included in the equation should be the -12V and -5V rails but these are only a few milliamps.
http://www.angelfire.com/pa/baconbacon/page2.html
A search of Google for Ohm,s Law will tell you everything you need to know about the relationship between voltage, current, power and resistance.
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