Do You Feel a Tingle When Charging the Reader

RWood · 03-16-2007, 11:05 AM

As SimpleDave requested, here is a poll about charging the Reader from the charger. This does not apply to using the USB port.

The goal is to see if the problem is widespread or only something that happens on the Euro 230 v lines.

diabloNL · 03-16-2007, 12:20 PM

230V and YES

yvanleterrible · 03-16-2007, 12:57 PM

Hey! You forgot 'USB and irrelevant' in the poll.

NatCh · 03-16-2007, 02:03 PM

Nope, he left it out deliberately -- they're trying to get a measure of how widespread the 'tingling' might be.

Bob Russell · 03-16-2007, 03:39 PM

I haven't noticed anything using the dock, but I don't think I ever touch the Reader case when it's plugged in. (Always the cover.)

Oh... 110V or 120V or whatever it is. US plugs.

NatCh · 03-16-2007, 04:01 PM

Quote:

Originally Posted by Bob Russell

110V or 120V or whatever it is. US plugs.

Technically, it's usually pretty close to 117V (if I recall correctly), but most folks don't seem to quibble over it, and I've known electricians to use 110 and 120 interchangeably, according to their preference.

Of course, I'm likely the only one here who thinks it's worth commenting on at all (feeling especially anal today, I guess).

RWood · 03-16-2007, 04:04 PM

According to the display on the UPS here I'm running at 119, no 120, no 119, no 121, no 120 ....

yvanleterrible · 03-16-2007, 04:05 PM

The voltage is regulated for impedance loss depending how far you are from major relay stations. Some rural stations can see up to 123V.

NatCh · 03-16-2007, 04:10 PM

Okay, I guess I'm not the only one ... unless you two are just trying to make me feel better.

HarryT · 03-17-2007, 05:15 AM

Yes, but having measured it with a multimeter I'm absolutely convinced it's just a 50Hz vibration from the cheapie power supply.

dstampe · 03-17-2007, 08:01 AM

If the shocks (and these tingles are very low-current shocks) are only happening in 230-volt areas, then it may let Sony off the hook and maybe not. While the charger is UL listed (not CE, which would definitely test at 550 volts for leakage, and is required to make it "legal" in Europe), it is marked as 120-240 volts operation, so should have been tested at at least 500V.

Just another case of saving a buck by making the charger as cheap as possible, outsourcing the design and manufacturing to China. That's OK (I've done that myself, and the savings are huge), but it's still good practice for the company that is using the adapter to test it for leakage themselves. International safety standards are for injusry or lethality, not for comfort, and "tingles" are not acceptable market-wise even if technically legal.

NatCh · 03-17-2007, 09:12 AM

I put a response over in this thread (post # 34) -- didn't want to double up the conversation, don't you know.

Dave Berk · 03-17-2007, 12:47 PM

230v and yes, and thanks for setting the poll up.

Alexander Turcic · 03-17-2007, 01:20 PM

I just tried and no tingle here (230V, Switzerland).

RWood · 03-18-2007, 12:47 PM

I'm wondering if someone in the Euro area were to take a voltage converter and drop their voltage to the 110-120 v area and plug the charger into that, would they still feel the tingle on the Reader case?

View Poll Results: Do you feel a tingle in the case when charging?
230 v and Yes	5	10.64%
230 v and No	14	29.79%
120 v and Yes	1	2.13%
120 v and No	27	57.45%
Voters: 47. You may not vote on this poll

03-16-2007, 11:05 AM	#1
RWood Technogeezer Posts: 7,233 Karma: 1601464 Join Date: Nov 2006 Location: Virginia, USA Device: Sony PRS-500	Do You Feel a Tingle When Charging the Reader As SimpleDave requested, here is a poll about charging the Reader from the charger. This does not apply to using the USB port. The goal is to see if the problem is widespread or only something that happens on the Euro 230 v lines.

03-17-2007, 08:01 AM	#11
dstampe dstampe Posts: 50 Karma: 17 Join Date: Jan 2007 Location: Canada Device: Sony PRS-500	If the shocks (and these tingles are very low-current shocks) are only happening in 230-volt areas, then it may let Sony off the hook and maybe not. While the charger is UL listed (not CE, which would definitely test at 550 volts for leakage, and is required to make it "legal" in Europe), it is marked as 120-240 volts operation, so should have been tested at at least 500V. Just another case of saving a buck by making the charger as cheap as possible, outsourcing the design and manufacturing to China. That's OK (I've done that myself, and the savings are huge), but it's still good practice for the company that is using the adapter to test it for leakage themselves. International safety standards are for injusry or lethality, not for comfort, and "tingles" are not acceptable market-wise even if technically legal. Last edited by dstampe; 03-17-2007 at 08:04 AM.

03-17-2007, 12:47 PM	#13
Dave Berk Fanatic Posts: 574 Karma: 138556 Join Date: May 2006 Device: PRS505	230v and yes, and thanks for setting the poll up. Last edited by Dave Berk; 03-17-2007 at 12:52 PM.

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03-16-2007, 12:20 PM	#2
diabloNL Gadget Force® Posts: 705 Karma: 2733 Join Date: Jun 2006 Location: The Netherlands Device: Sony PRS-300 + Cybook with funny screen :P	230V and YES

03-16-2007, 12:57 PM	#3
yvanleterrible Reborn Paper User Posts: 8,616 Karma: 15446734 Join Date: May 2006 Location: Que Nada Device: iPhone8, iPad Air	Hey! You forgot 'USB and irrelevant' in the poll.

03-16-2007, 02:03 PM	#4
NatCh Gizmologist Posts: 11,615 Karma: 929550 Join Date: Jan 2006 Location: Republic of Texas Embassy at Jackson, TN Device: Pocketbook Touch HD3	Nope, he left it out deliberately -- they're trying to get a measure of how widespread the 'tingling' might be.

03-16-2007, 03:39 PM	#5
Bob Russell Recovering Gadget Addict Posts: 5,381 Karma: 676161 Join Date: May 2004 Location: Pittsburgh, PA Device: iPad	I haven't noticed anything using the dock, but I don't think I ever touch the Reader case when it's plugged in. (Always the cover.) Oh... 110V or 120V or whatever it is. US plugs.

03-16-2007, 04:04 PM	#7
RWood Technogeezer Posts: 7,233 Karma: 1601464 Join Date: Nov 2006 Location: Virginia, USA Device: Sony PRS-500	According to the display on the UPS here I'm running at 119, no 120, no 119, no 121, no 120 ....

03-16-2007, 04:05 PM	#8
yvanleterrible Reborn Paper User Posts: 8,616 Karma: 15446734 Join Date: May 2006 Location: Que Nada Device: iPhone8, iPad Air	The voltage is regulated for impedance loss depending how far you are from major relay stations. Some rural stations can see up to 123V.

03-16-2007, 04:10 PM	#9
NatCh Gizmologist Posts: 11,615 Karma: 929550 Join Date: Jan 2006 Location: Republic of Texas Embassy at Jackson, TN Device: Pocketbook Touch HD3	Okay, I guess I'm not the only one ... unless you two are just trying to make me feel better.

03-17-2007, 05:15 AM	#10
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383043 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Yes, but having measured it with a multimeter I'm absolutely convinced it's just a 50Hz vibration from the cheapie power supply.

03-17-2007, 09:12 AM	#12
NatCh Gizmologist Posts: 11,615 Karma: 929550 Join Date: Jan 2006 Location: Republic of Texas Embassy at Jackson, TN Device: Pocketbook Touch HD3	I put a response over in this thread (post # 34) -- didn't want to double up the conversation, don't you know.

03-17-2007, 01:20 PM	#14
Alexander Turcic Fully Converged Posts: 18,171 Karma: 14021202 Join Date: Oct 2002 Location: Switzerland Device: Too many to count here.	I just tried and no tingle here (230V, Switzerland).

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03-18-2007, 12:47 PM	#15
RWood Technogeezer Posts: 7,233 Karma: 1601464 Join Date: Nov 2006 Location: Virginia, USA Device: Sony PRS-500	I'm wondering if someone in the Euro area were to take a voltage converter and drop their voltage to the 110-120 v area and plug the charger into that, would they still feel the tingle on the Reader case?