10-31-2012, 06:20 PM
| | Re: Voltage variations damage?
In sci.electronics.basics George Herold <email@example.com> wrote:
> On Oct 23, 5:41?am, "jim stone" <tgh6h5t6tu5...@mail.invalid> wrote:
>> Have just received by post a 'Fone Storm' car charger for a Huawei Ascend
>> g300 phone. I wanted to check the specs to see if I had been sent the right
>> one for this phone.
>> On the box it says input DC 12v-24v. ?Output DC 4.2v - 10v. ?500ma, ?max
>> I always understood that tiny components could be damaged by even fairly
>> minor variations in voltage, so am surprised that the output can be stated
>> as 4.2v - 10v. ?It was very cheap only ?2. ?Would I be safer to spend more
>> and get the official Huawei charger?
> Hi Jim, I don't know about the particular phone. But it's certainly
> possible that the phone can handle a range of DC input voltages for
> charging. Is there some specification for this in the phone manual?
> That might give you some peace of mind.
I've seend this dubious output rating of 4 to 10 or 4 to 9 volts on
generic garbage micro usb chargers off ebay.
they don't work right with many phones, in case you were curious.