Power consumption ~ NEED HELP! :)

[knowledgegranted]

Ok I'm having a problem, part of the project is to go green somehow. So, I'm trying to figure out a way on how to power three screens with a green way.

I'm an idiot when it comes to power, I know US standard homes have 240V plugs and thats about it. I have no idea on the whole

amp*whatthe****goeshere= watt crap

Heres an example,

http://www.newegg.com/Product/Product.aspx?Item=N82E16824112009R

Say I were to buy these three screens it says:

it uses 45 W Max with 100-240 VAC

So does that mean I have to find a source that supplies 135W of power? Or does it have to be a 120V supply? I'm a little confused on the whole subject of Watts, Amps, power usage, electricity, Volts...what ever you get it...


But thanks for reading, and thanks for the help in advance

[NightrainSrt4]

I'm confused. Why not just plug them into the wall? The outlet will power those three easily. If it's a regular outlet on the wall you just have to plug them in. . .

US outlets are 120/240, so they will work fine, just plug them in. The 120 outlets are your small outlets you see over the house, and the 240's are the big outlets for stuff like washers and dryers.

[LiTHiUM0XiD3]

US standard homes have the same as canadas... which is 120VAC

[Omega]

US power is 120V AC @60hz, which means that the power actually goes from 0v to 240v 60 times every second.

Just for the record.

[OvRiDe]

US power is 120V AC @60hz, which means that the power actually goes from 0v to 240v 60 times every second.

Just for the record.

Not to nit pick but I'm pretty sure it goes from 0V to +120V to 0V to -120V and back to 0V 60 times a second.

[knowledgegranted]

I'm confused. Why not just plug them into the wall?

Part of the project is to go green, and having four screens on 24/7 is not green so I was thinking of investing in some solar panels that could power the screens....

So I was wondering if the solar panels or other green way had to supply 120v for this to work

[OvRiDe]

http://www.treehugger.com/files/2007/01/nec_introduces.php

[nevermind1534]

What about an inverter? Not very efficient, though. You'd probably need quite a few solar panels.

[NightrainSrt4]

Just by going lcd over crt you are saving energy. Should have mentioned the solar panels originally, but...Can't read minds. To be honest, the energy and resources used to make the panels you are going to need, and then the batteries and inverters to AC, just to have your lcd use its own inverter to go back to DC would probably nullify any "green" savings you are going on.

Two of those 45w lcd's use about the same as a 90w 17" crt. I'm all for going green, but with the energy used to make all the panels, batteries, inverters, chargers I don't see how that is any better. Ya it looks great on your meter outside, but what other ramifications would the project have?

Any conversions you do lowers the efficiency.

[Twigsoffury]

running them on 240v AC would halve your amps. which should net you a small decrease on the electric bill.


Could always just turn them off when your not using them.


want to save serious cash?


Switch your electric water heater to gas.

you'll save about 35% on your electric bill. and only see about a 10% increase on your gas bill.

25% reduction. my electric bill went down about 80$ when i switched mine over to gas. (gas bill went up 15$)