Does a cellphone charger use energy when it's plugged in but the cellphone is not?
Yes, as current will flow in the primary coil. But when a
cellphone is added, the energy consumption is more, due to phase
angle changes in the secondary coil.
Unless it is defective, it is not dangerous to leave a phone charger plugged in an electrical outlet. But the transformer and circuit within the charger still draw current and dissipate a small amount of heat, so it is considered a wasteful use of electricity (and thereby damaging to the environment) to leave it plugged in when it is not charging a cell phone.
Why does a cell phone charger continue to consume power when plugged into an outlet but not the phone?
Most electronics will consume a little power even if they are off or not in use. In the case of a cell phone charger, you may notice that if it is plugged into the wall, but there is no cell phone charging, the charger will still be warm. I don't know the physics behind that, but anything that is plugged in will take up a little energy, even when not in use.
One charger with no load does not use much energy, but it is 100% waste. When you consider the aggregate effect of thousands or even millions of tiny waste loads, it can add up to a lot of wasted energy. Not only does the charger consume energy, but it also generates heat that can add to air conditioning loads in the summertime.
Whenever I have my iPod Touch plugged into the computer it charges but if I use the wall adapter it doesn't charge. Why not?
There are two ways. One: you can use the USB cord your cellphone came with if it came with one. If you have a phone like mine, It has the charger part, but the cord you can remove. Plug the end of the cord that ws plugged in to the charger to one of the USB things on the pc. then plug the other end into your phone. Two: you can use bluetooth. go to…
Mac book and your mom always bitches saying to unplug the charger when im not charging it and im trying to figure out does your charger use power when im not charging the computer?
Cell phones, mobile phones, even smart phones and tablets are very energy efficient because they are designed to run on a battery for a long period of time. Cell Phones use approximately 2 to 6 watts when charging, while a charger left plugged in without a phone will consume 0.1 to 0.5 of a watt. Charging an iphone or android phone under normal use conditions will typically cost under a dollar for a full year.
Does leaving a phone charger on the socket without the cellphone plugged in result in wastage of power?
Keep in mind I'm not an electric engineer or electrician. Leaving a phone charger plugged in without the cellphone plugged in is a waste of electricity. It's not a very big drain, but it's there and it costs you a tiny, tiny, bit more on your electric bills. Without going into too much detail/complexity: the purpose of a phone charger or "adapter" is to adapt the electricity coming from your outlet into a kind that…
Yes. A phone charger is a small transformer. It converts 120 volts down the the voltage that the phone needs to charge itself. Even if the phone is not connected to the secondary side of the transformer (low voltage for the phone) the primary side is still drawing power. This is called an excitation current. It is used to generate a magnetic flux that joins the primary side of the transformer to the secondary side…
Any car charger will do. I recommend that you use a trickle charger rather than a jump charger. Also, look into a Battery Tender which will not only charge your battery at a proper pace, but you can leave it plugged in an the Battery Tender will maintain your battery for you so that it never becomes low again.
Barely anything. most cell phone chargers draw less than 1.5 Watt.(per hour) Electricity is measured in kilowatt hours, and 1000 watts (per hour) is equal to 1 kilowatt hour (kwh). This means that your cell phone charger draws less than 0.0015 kwh. This means that even if you left your phone charger plugged in all the time, the cell phone charger would be accountable for less then 1 kwh on your monthly electricity bill. If…
Unplug it from the computer and use a charger with higher amperage. For example if the standard charger uses a 5 V 1 Amp charger than you use a 5 V 2 Amp that will charge twice as fast but you may run the risk of overheating the cell phone. Find out from the phone manufacturer if the phone can sustain higher current.
If you leave your phone charger plugged in at all times even if the phone is not hooked up does it still use electricity?
Yes. It does but very minimal. Look at the following link where someone plugged in 5 chargers to get a reading of 1W on the reading meter. Compare this to a 100W bulb being left idle when not in use. Stop using bulbs and start using CFL's that would help much more. Check out the link for the experiment: http://www.inference.phy.cam.ac.uk/sustainable/charger/
After the smoke clears...... the charger won't work. Unless it was rated for 120v-220v. Radio Shack (and others) sell devices to convert 220v to 110v to use your charger, but be sure to get one that uses a "transformer". Here's one rated for 85w (watts) http://www.radioshack.com/product/index.jsp?productId=2062422
This is a universal formula for charging airsoft batteries: (battery capacity (battery's mAh rating)/charger output (mA)) x 1.4(for NiCad batteries, 1.5 for NiMh batteries) = time (in hours). all the information to use this equation should be on the batteries and the charger. But if you want to make your life easier invest 20$ in a smart charger. A smart charger will tell you when your battery is done charging and you can leave the…
In principle, yes, but you wouldn't want to wait around to do the job that way. Human ears are very sensitive, and the sounds around you carry very little energy compared to the energy used by common electrical gadgets. One or two watts of pure tone from a loudspeaker will drive you out of the living room, and the "ear buds" are blasting no more than a few milliwatts of sound power into your ear…
A smart charger is a lot better for your airsoft batteries. It charges your batteries in less than half the time it would take for your batteries on a wall charger. They are also a lot better for your batteries because batteries have memory. Say you have 2000 mAh of energy inside your battery. You use it until it has 1500 mAh left. If you plug it into a standard wall charger, by the time…