PC power supplies January 02, 2010, 12:55:02 am Yahoo Message Number: 108892Someone wrote: 200 watt power supply put less drain on the batteries than a 500 watt PS?> You need to remember that a 500 Watt power supply doesn't use 500 watts, and neither does a 200 watt. Those are the maximum ratings of what the supply can provide to a load. If you have a 75 watt load hooked up to each supply there would be no difference in what the supplies would draw. But because the wiring and circuitry is more robust in the 500 watt supply to be able to supply more power than the 200 watt can, then it would lose a little more power running itself. This inefficiency would be wasted power if you didn't need the larger ability. I doubt that it would be very significant. I've seen people add up the wattage ratings of devices without regard to what the actual usage would be to arrive at estimates. But these estimates are worst case scenarios, and can have little to do with reality. Best to get an ammeter, a 'Kilowatt' meter is excellent also to monitor actual power usage. Hope this was helpful, Ron and Bluebelle, a '99TKB[Non-text portions of this message have been removed]
Re: PC power supplies Reply #1 – January 02, 2010, 03:32:09 am Yahoo Message Number: 108894'Hope this was helpful, Ron and Bluebelle, a '99TKB'Thanks Ron_,_._,___[Non-text portions of this message have been removed]
Topic: PC power supplies (Read 4 times)
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Topic: PC power supplies (Read 4 times)
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