tesco
03-31-2008, 06:20 PM
So I decided to do a little experiment...
I've created a rig for testing amperage of whatever I want to plug into my rig (an 1110 box with a receptacle, and a meter hooked up inline of the hot wire).
The current running through my computer is an average of 0.6amps at idle.
Watching a fullscreen hd video it can get as high at 0.7A, average of 0.8A.
Playing a game the average is 0.78A, getting as high as 0.81A.
Testing the line voltage gives me a reading of 121.8volts.
So wattage = volts * amps = 121.8*0.8 = 97.44watts.
Now I know that's not accurate because I'm not taking inductance (this is ac we're talking about) into account, but It's still close...
Who said we need 1000watt power supplys? :lol: I could get away with a 150watt...
Unless someone can prove me wrong here. What am I missing?:huh:
btw, to prove the meter is accurate I tested my basement's lighting circuit which gave me ~460watts. It's 8 50watt (8*50 = 400w) pot lights (low voltage, so they have a transformer = inefficiency).
I also tested a plug-in space heater which si rated at 15 amps, it gave a reading of ~10amps once it was running (I didn't leave it too long as I have a 6amp fuse in this meter that I don't want to burn...).
Other interesting readings I found:
My Monitor (19inch widescreen lcd from samsung) = 0.18amps
My TV (32inch widescreen lcd from sharp) = 0.86amps
xbox 360 = 0.8amps in low-power mode, 1.1amps in a game
I've created a rig for testing amperage of whatever I want to plug into my rig (an 1110 box with a receptacle, and a meter hooked up inline of the hot wire).
The current running through my computer is an average of 0.6amps at idle.
Watching a fullscreen hd video it can get as high at 0.7A, average of 0.8A.
Playing a game the average is 0.78A, getting as high as 0.81A.
Testing the line voltage gives me a reading of 121.8volts.
So wattage = volts * amps = 121.8*0.8 = 97.44watts.
Now I know that's not accurate because I'm not taking inductance (this is ac we're talking about) into account, but It's still close...
Who said we need 1000watt power supplys? :lol: I could get away with a 150watt...
Unless someone can prove me wrong here. What am I missing?:huh:
btw, to prove the meter is accurate I tested my basement's lighting circuit which gave me ~460watts. It's 8 50watt (8*50 = 400w) pot lights (low voltage, so they have a transformer = inefficiency).
I also tested a plug-in space heater which si rated at 15 amps, it gave a reading of ~10amps once it was running (I didn't leave it too long as I have a 6amp fuse in this meter that I don't want to burn...).
Other interesting readings I found:
My Monitor (19inch widescreen lcd from samsung) = 0.18amps
My TV (32inch widescreen lcd from sharp) = 0.86amps
xbox 360 = 0.8amps in low-power mode, 1.1amps in a game