Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
22336 posts

Uber Geek

Trusted
Subscriber

  # 1000407 6-Mar-2014 22:35
Send private message

hamish225:
thats silly, why on earth do they need them for?


Because apple use them to ID the chargers max output rather than doing as everyone else does and ramping up the current till the voltage drops as the current limit kicks in.

That is also why an android/other phone may toast an apple targeted car charger as they try to pull 2 amps from something only good for 1 but doesn't have a current limiting design in them. Most chargers now use the apple resistors but also limit the current with a proper design that won't cook up when you try to pull 2 amps from them.




Richard rich.ms

3937 posts

Uber Geek

Subscriber

  # 1000408 6-Mar-2014 22:40
Send private message

hamish225: ive got a $2 one, it wouldn't charge my ipod, so i dont think it'd charge my phone. not really fit for purpose, it should say on the box that it wont charge smart devices.

but for $2 i hardly think its worth waiving the CGA at the poor asian people who run the store i got it from.


Uncle Bill's stores stock car USB chargers with twin outputs, one of them apparently 2.1 amps. Under $10 for sure. I found them after I'd already bought some from eBay so can't confirm their quality.

 
 
 
 


22336 posts

Uber Geek

Trusted
Subscriber

  # 1000411 6-Mar-2014 22:42
Send private message

Dunnersfella: I was driving a car a few weeks ago, iPod connected via 3.5mm cable, charging my iPhone via the cigarette lighter. When I accelerated I'd get a high pitched whine in the car.
The car charger was from the petrol station, picked up on a whim so I could listen to my almost flat phone on the drive home. It was interesting at the time that it only whined when I accelerated...
The car, at the time was a 6.2l V8.
I've never had the issue in my much cheaper vehicle, a 1.6l Mitsi...
Same adaptor and cable.


Ground loop. You will find it does it even with the ciggy plug not in far enough to get power, only the shield touching.




Richard rich.ms

1 | 2 
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Disney+ streaming service confirmed launch in New Zealand
Posted 20-Aug-2019 09:29


Industry plan could create a billion dollar interactive games sector
Posted 19-Aug-2019 20:41


Personal cyber insurance a New Zealand first
Posted 19-Aug-2019 20:26


University of Waikato launches space for esports
Posted 19-Aug-2019 20:20


D-Link ANZ expands mydlink ecosystem with new mydlink Mini Wi-Fi Smart Plug
Posted 19-Aug-2019 20:14


Kiwi workers still falling victim to old cyber tricks
Posted 12-Aug-2019 20:47


Lightning Lab GovTech launches 2019 programme
Posted 12-Aug-2019 20:41


Epson launches portable laser projector
Posted 12-Aug-2019 20:27


Huawei launches new distributed HarmonyOS
Posted 12-Aug-2019 20:20


Lenovo introduces single-socket servers for edge and data-intensive workloads
Posted 9-Aug-2019 21:26


The Document Foundation announces LibreOffice 6.3
Posted 9-Aug-2019 16:57


Symantec sell enterprise security assets for US$ 10.7 billion to Broadcom
Posted 9-Aug-2019 16:43


Artificial tongue can distinguish whisky and identify counterfeits
Posted 8-Aug-2019 20:20


Toyota and Preferred Networks to develop service robots
Posted 8-Aug-2019 20:11


Vodafone introduces new Vodafone TV device
Posted 7-Aug-2019 17:16



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.