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#1
05-19-2007, 09:55 PM
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do phone chargers use electricity when plugged into wall but not phone
somebody told me that a phone charger that is plugged in uses the same amount of electricity whether or not there's a phone plugged into it. sounds dubious to me. thoughts?
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#2
05-19-2007, 10:02 PM
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Re: do phone chargers use electricity when plugged into wall but not p
Somebody told me that when a tree falls in the forest and no one is around to hear it, it doesn't make any sound on the way down.
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#3
05-19-2007, 10:03 PM
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Re: do phone chargers use electricity when plugged into wall but not phone
[ QUOTE ]
somebody told me that a phone charger that is plugged in uses the same amount of electricity whether or not there's a phone plugged into it. sounds dubious to me. thoughts? [/ QUOTE ] That somebody is wrong. The circuit isn't closed, no juice is being drawn.
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#4
05-19-2007, 10:06 PM
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Re: do phone chargers use electricity when plugged into wall but not p
it's true. also all light bulbs use the same amount of energy whether they are on or not. if you're strapped for cash try unscrewing all of your light bulbs when they're not in use.
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#7
05-19-2007, 10:49 PM
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Re: do phone chargers use electricity when plugged into wall but not p
googling seems to confirm that it's a lot of wasted power. They also recommend using a power strip to turn tvs on and off b/c tvs do this too.
Pretty sick. [ QUOTE ] VCRs, televisions, stereos, computers, and kitchen appliances all use energy while not in use. You may have noticed how a cell phone recharger can be warm even when not attached to a phone. The best way to prevent unnecessary energy expenditures is to do a clean sweep of your home. [/ QUOTE ] Sounds like a hassle to save about $80/yr
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#8
05-20-2007, 03:04 AM
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Re: do phone chargers use electricity when plugged into wall but not p
[ QUOTE ]
[ QUOTE ] somebody told me that a phone charger that is plugged in uses the same amount of electricity whether or not there's a phone plugged into it. sounds dubious to me. thoughts? [/ QUOTE ] That somebody is wrong. The circuit isn't closed, no juice is being drawn. [/ QUOTE ] Nope, this is wrong. Transformers will draw current regardless of whether the direct current side of it is a closed circuit. There is a simple test, put your hand on the charger plug and see if it is warm. If it is then clearly it's using electricity.
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#9
05-20-2007, 03:07 AM
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Re: do phone chargers use electricity when plugged into wall but not p
Yeah with transformers the circuit IS closed. The other side of the transformer circuit is open though.
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#10
05-20-2007, 03:18 AM
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Re: do phone chargers use electricity when plugged into wall but not p
[ QUOTE ]
googling seems to confirm that it's a lot of wasted power. They also recommend using a power strip to turn tvs on and off b/c tvs do this too. Pretty sick. [ QUOTE ] VCRs, televisions, stereos, computers, and kitchen appliances MAY all use energy while not in use. You may have noticed how a cell phone recharger can be warm even when not attached to a phone. The best way to prevent unnecessary energy expenditures is to do a clean sweep of your home. [/ QUOTE ] Sounds like a hassle to save about $80/yr [/ QUOTE ] I think that needs to be in there. Anything with a remote will use some power. Obviously anything with an LED on or appliances with clocks will use some power. Battery chargers will use some, but I'm sure it's a lot less than when they are charging. This is clearly true with power tool chargers because you can tell when they are really charging or just on and waiting. Computers? Really? Most don't have LEDs when they are off and don't have remotes and they need a little battery to keep the clock time.
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