iPad won't charge while attached to PC

acosmichippo

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It makes literally no difference. They are just USB cables... the iPhone uses voltage control circuitry which means if you plug in an iPhone using an ipad charger it will limit the charge it receives / draw less.

If you plug your iPad into an iPhone charger then it will charge, but again, slower.
Circuitry in the phone doesn't really have anything to do with it. All USB ports output at 5V, which is one reason you need a charger (AC adapter) in the first place. The circuits in an American home are 120V. If the charger doesn't take that down to 5V for the phone, it's gonna get fried.

As for the current involved, all electronic devices only draw the current they need, regardless of protective circuitry. That's why you can use a 50W lightbulb in your home without it overloading (the circuits in your home can deliverin the range of 2,000W).
 

iNinja

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You changed your answer !
I never said it wouldn't charge either! I am kinda glad you went back after claiming they are the same


No but you said it's best to use the correct charger, when it actually makes no difference ;-)


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imutter

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Circuitry in the phone doesn't really have anything to do with it. All USB ports output at 5V, which is one reason you need a charger (AC adapter) in the first place. The circuits in an American home are 120V. If the charger doesn't take that down to 5V for the phone, it's gonna get fried.

As for the current involved, all electronic devices only draw the current they need, regardless of protective circuitry. That's why you can use a 50W lightbulb in your home without it overloading (the circuits in your home can deliverin the range of 2,000W).
I guess you do not see the difference in output on V and A
If you want to do that it's up to you
I suggest not to do it on a regular base
 

imutter

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So we always used that one wall charger from sons phone
I went to the boxes and the other phones chargers look not like yours
Only son uses really wall charger sometimes hubby. We charge on laptops mostly.
Anyways son said he switch with a friend who like his better a few years back
Funny thing never even noticed

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imutter

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Circuitry in the phone doesn't really have anything to do with it. All USB ports output at 5V, which is one reason you need a charger (AC adapter) in the first place. The circuits in an American home are 120V. If the charger doesn't take that down to 5V for the phone, it's gonna get fried.

As for the current involved, all electronic devices only draw the current they need, regardless of protective circuitry. That's why you can use a 50W lightbulb in your home without it overloading (the circuits in your home can deliverin the range of 2,000W).
I forgot to say it is correct that they only used what they need but the extra still puts strain on your device.
 

acosmichippo

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Depends what "extra" you're talking about.

(Significantly) extra voltage will harm your iDevice. Because of this, all USB devices and chargers are standardized to use 5 volts.

Extra amps will not hurt it at all.

So really the only way your iDevice can be harmed by a USB charger is if the charger is malfunctioning by outputting a higher voltage than it should.

Engineers are smart. They know people will mix and match as long as the plug fits the hole.
 

AndytheClown

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May 25, 2011
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I blew up my iPhone charger on a diesel generated at a festival in September. The genny also blew my amp rack and signal processors. I'm claiming them on the insurance, but as the iPhone charger replacement is only about £7 from Argos, I thought I'd let it go lol x