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May 19, 2009 3:45 PM PDT

Apple warns of static shock from iPhone, iPod

by Steven Musil
  • 84 comments

Apple warns that iPhone and iPod users may experience a small static shock through their earbuds.

(Credit: Amazon)

iPhone and iPod users may experience a "small and quick" shock via their earbuds due to a buildup of static electricity, Apple warned Monday.

People listening to one of the devices in extremely dry air are most at risk of receiving a static electricity shock through the ear buds, according to a warning posted on Apple's Web site. The post likened the condition to the discharge that occurs when a person drags his or her feet across a carpet then gets a shock by touching a door knob.

However, Apple asserted that this condition did not necessarily indicate that Apple's equipment was malfunctioning.

"This condition is not limited to Apple hardware and static can potentially build up on almost any hardware and could be discharged using any brand of earbuds," Apple said.

Apple's warning didn't mention what prompted the company to issue the warning, but a discussion thread on the company's support site showed a few users had voiced concern about the condition.

"Maybe it's just me but for a couple of weeks now my earphones are delivering little electric shocks into my ears," wrote one reader. "I just wonder if anyone else is going through this issue."

Apple made several suggestions in the warning on how to remedy the condition when indoors, including the use of a humidifier to raise the moisture level of the air, hand lotions to moisturize dry skin, or an anti-static spray. The site also recommends users wear clothes made of natural fibers instead of synthetic fibers. When users are outdoors, Apple suggests users keep their device in a bag or a case to keep it out of the wind and refrain from frequently removing it from pockets as the rubbing may cause static buildup.

Originally posted at Apple
January 17, 2008 10:46 AM PST

Dell laptops in electric-shock shocker

by Rory Reid
  • 15 comments
(Credit: Crave UK)

We've discovered a worrying new feature in some Dell laptops: If you touch them, you may get an electric shock. This discharge can vary in strength from a gentle tingle to a sudden jolt. Disturbingly, you could also be shocked when connecting printers, PDAs and other peripherals to the offending laptops.

We know this because several CNET staff were hit with an electrical charge while using Dell's new XPS M1530--and we're not the only ones. Dell's forums are littered with user complaints about the shocking experiences they've had with some systems.

The problem only seems to occur in Dell laptops that have a brushed-aluminium finish. These include the XPS M1330 and XPS  M1530. It's caused by the two-pronged connection between the mains lead and the power adaptor, which isn't earthed properly because of its lack of a third pin.

The laptop therefore exhibits an electrical potential (voltage) between its exposed metal parts (the brushed aluminium wrist pad) and earth ground. Since there is no earth, the human body basically acts as a wire that can conduct electric current, hence the tingling, jolting sensation.

This can be exacerbated depending on the conditions of a person's skin--whether it's oily or dry--and the surrounding environment. Humidity levels, flooring types or desk material all play a role here.

Dell had not responded to a request for comment at time of publication--we'll update if they ever get back to us. When our colleagues rang Dell to complain, they were told Dell is willing to replace all affected two-pin power supplies with a three-pin connection. But the company doesn't seem to publicly acknowledge there's a serious problem. According to a Dell Knowledge Base article:

"The electric current on all Dell products have been measured and proven to be well within the safety limits per safety standards--IEC950, EN60950, UL1950, etc., even with an input voltage of 240 volts. The voltage (tingling sensation) does NOT present any risk of injury to the user. It is recommended to unplug the AC adaptor from the parent device before attaching any cables or accessories, as this reduces the possibility of experiencing the tingling sensation."

While this may reassure some users, we're still slightly concerned. Back in 2004, the company recalled 4.4 million laptop power adaptors because of a fear they could overheat, creating a risk of fire or electric shock. The problem affected some Latitude, Precision and Inspirons between 1998 and 2002.

Have you been affected by laptops that give out an electric shock? Has your laptop exploded and caused horrible facial injuries? Let us know by posting in our forums.

(Source: Crave UK)

May 21, 2007 11:40 AM PDT

Hello Kitty is taking over our keys too

by Mike Yamamoto
  • Post a comment
(Credit: Brando)

Lest you think we've been exaggerating when warning that the evil Hello Kitty is permeating every aspect of our lives, consider this: the "Hello Kitty Static Electricity Key Holder" uncovered by Uber-Review.

Now why, pray tell, does the dreaded feline need to make an appearance on something as innocuous as a key cover that prevents electric shocks? The only explanation can be that its relentless drive toward world domination is beginning to invade our homes. It gets worse: This item is the unholy product of the power axis between the cursed cat and the insane inventors of Brando. There's no stopping them now.

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