Hello,
There is something I don’t get about power and energy.
If I got it right, power is expressed in Watts or Joules ans energy is in Watts.hours.
So if I buy à power supply rated at let’s say 700W. Does that mean (assuming, for the sake of the argument 100% efficiency and 100% load) it also consumes 700Wh ? And also that 700W is it’s maximum power output ?
In: 2
1 watt = 1 joule per second. This is a measure of power, it’s how fast you can spend energy.
1 watt hour = 1 watt * 1 hour = 3600 joules, This is a measure of energy. Your electric meter likely reads in kilowatt hours. Power supplies generally don’t list this unless they’re integrated with batteries.
A power supply is generally rated for power. Or more specifically, it will be rated for a current and a voltage it can provide to its load.
Batteries are a little more complicated, their power ratings are often given in relation to their capacity(C rating), rather than absolute current draw.
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