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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Posted to comp.mobile.android,alt.home.repair,sci.electronics.repair
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On Wed, 13 Aug 2014 01:26:35 -0400, nospam wrote:
usb must be 5v +- 0.25v, or 4.75-5.25v, which means the oem charger is not usb compliant. Here's a picture of the OEM EP-TA10JWS charger, showing the 5.3 volts! http://www.amazon.com/Samsung-Galaxy.../dp/B00H8482KQ What I'm worried about is that I can't find a car adapter that is 5.3 volts and 2.0 amps or more. |
#2
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On Wed, 13 Aug 2014 00:53:38 -0500, Elechi Amadi wrote:
Here's a picture of the OEM EP-TA10JWS charger, showing the 5.3 volts! http://www.amazon.com/Samsung-Galaxy.../dp/B00H8482KQ What I'm worried about is that I can't find a car adapter that is 5.3 volts and 2.0 amps or more. Actually, that's the wrong picture. Here's the right picture showing 5.3 volts at 2.0 amps output. http://www.wirelessground.com/samsun...ger-2-amp.html |
#3
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The move to USB 3.0 only affects charge rates connected to a PC.
2.x is limited to 500mA while 3.x is 900mA I think. Both standards use 5V, but 2A AC chargers often run a bit higher at 5.3V. The chargers don't directly adhere to either USB spec and basically trigger fast charge the same as before, by shorting out or putting a fixed resistance between the data pins. My old HP TouchPad USB 5.3V/2A charger with 2.0 cord charges my Note 3 just as fast as the Samsung 5.3V/2A adapter with USB 3.0 cord does. If you look closely, you'll notice that the "USB 3.0" Samsung charger doesn't actually have the extra 3.0 pins, it uses a 2.0 port. That's because for pure charging devices the standard doesn't matter, only the current and voltage rating and that it shorts the data pins. |
#4
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In article , Helmer Bengtsson
wrote: The move to USB 3.0 only affects charge rates connected to a PC. 2.x is limited to 500mA while 3.x is 900mA I think. originally, but the battery charging spec allows for more current. Both standards use 5V, but 2A AC chargers often run a bit higher at 5.3V. no they don't. 5.3v is outside the usb spec. The chargers don't directly adhere to either USB spec and basically trigger fast charge the same as before, by shorting out or putting a fixed resistance between the data pins. My old HP TouchPad USB 5.3V/2A charger with 2.0 cord charges my Note 3 just as fast as the Samsung 5.3V/2A adapter with USB 3.0 cord does. If you look closely, you'll notice that the "USB 3.0" Samsung charger doesn't actually have the extra 3.0 pins, it uses a 2.0 port. That's because for pure charging devices the standard doesn't matter, only the current and voltage rating and that it shorts the data pins. then it's not compliant in more ways than one. it's supposed to negotiate the power over the data pins. |
#5
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On Wed, 13 Aug 2014 06:03:03 +0000 (UTC), Helmer Bengtsson
wrote: The move to USB 3.0 only affects charge rates connected to a PC. 2.x is limited to 500mA while 3.x is 900mA I think. Both standards use 5V, but 2A AC chargers often run a bit higher at 5.3V. The chargers don't directly adhere to either USB spec and basically trigger fast charge the same as before, by shorting out or putting a fixed resistance between the data pins. My old HP TouchPad USB 5.3V/2A charger with 2.0 cord charges my Note 3 just as fast as the Samsung 5.3V/2A adapter with USB 3.0 cord does. If you look closely, you'll notice that the "USB 3.0" Samsung charger doesn't actually have the extra 3.0 pins, it uses a 2.0 port. That's because for pure charging devices the standard doesn't matter, only the current and voltage rating and that it shorts the data pins. For anyone that is interested please see: http://www.usb.org/developers/docs/ All the USB standards are there. ?-) |
#6
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As for the title question, I never myself could figure out the difference.
If you know, tell me because it makes no sense class 1 or class 2 except from a driver perspective. |
#7
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In article , Helmer Bengtsson
wrote: As for the title question, I never myself could figure out the difference. If you know, tell me because it makes no sense class 1 or class 2 except from a driver perspective. it doesn't matter |
#8
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On 13/08/2014 06:55, Elechi Amadi wrote:
On Wed, 13 Aug 2014 00:53:38 -0500, Elechi Amadi wrote: Here's a picture of the OEM EP-TA10JWS charger, showing the 5.3 volts! http://www.amazon.com/Samsung-Galaxy.../dp/B00H8482KQ What I'm worried about is that I can't find a car adapter that is 5.3 volts and 2.0 amps or more. Actually, that's the wrong picture. Here's the right picture showing 5.3 volts at 2.0 amps output. http://www.wirelessground.com/samsun...ger-2-amp.html Duhhhh... and here's a picture showing a charger with *exactly* the same product code (EP-TA10JWS) with the correct voltage (5.0v) in the product label and text of the web page. http://www.amazon.com/Samsung-Galaxy-Travel-Charger-EP-TA10JWS/dp/B00H8482KQ Looks like there's a *mistake* in the wirelessground.com web page, it should say 5.0v not 5.3v. So a 5.0v car charger would be the right choice for you. .... got the picture yet? |
#9
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On Wed, 13 Aug 2014 13:44:06 +0100, nemo wrote:
Looks like there's a *mistake* in the wirelessground.com web page, it should say 5.0v not 5.3v. So a 5.0v car charger would be the right choice for you. I can read it as 5.3 volts printed right on my charger! So the only mistake is in the Amazon photos. |
#10
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On Wed, 13 Aug 2014 13:44:06 +0100, nemo wrote:
Duhhhh... and here's a picture showing a charger with *exactly* the same product code (EP-TA10JWS) with the correct voltage (5.0v) in the product Samsung themselves, say it's 5.3 volts. http://www.samsung.com/za/consumer/m...10EWEQGWW-spec http://www.samsung.com/za/business/b...EP-TA10EWEQGWW Plus I can read 5.3 volts printed on the charger. Also Amazon shows it at 5.3 volts: http://www.amazon.co.uk/Samsung-Main.../dp/B00I6LRPRQ As does Wireless Ground: http://www.wirelessground.com/samsun...ger-2-amp.html Whatever XDA is, they show it at 5.3 volts also: http://forum.xda-developers.com/show....php?t=2479107 http://forum.xda-developers.com/show....php?t=2534079 |
#11
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On Wed, 13 Aug 2014 08:24:42 -0500, Elechi Amadi
wrote: On Wed, 13 Aug 2014 13:44:06 +0100, nemo wrote: Duhhhh... and here's a picture showing a charger with *exactly* the same product code (EP-TA10JWS) with the correct voltage (5.0v) in the product Samsung themselves, say it's 5.3 volts. http://www.samsung.com/za/consumer/m...10EWEQGWW-spec http://www.samsung.com/za/business/b...EP-TA10EWEQGWW Plus I can read 5.3 volts printed on the charger. Also Amazon shows it at 5.3 volts: http://www.amazon.co.uk/Samsung-Main.../dp/B00I6LRPRQ As does Wireless Ground: http://www.wirelessground.com/samsun...er-2-amp..html Whatever XDA is, they show it at 5.3 volts also: http://forum.xda-developers.com/show....php?t=2479107 http://forum.xda-developers.com/show....php?t=2534079 Quit gassing. Measure it. Both unloaded and at 1.00 Amperes. ?-) |
#12
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In article
dhosting.com, Elechi Amadi wrote: usb must be 5v +- 0.25v, or 4.75-5.25v, which means the oem charger is not usb compliant. Here's a picture of the OEM EP-TA10JWS charger, showing the 5.3 volts! http://www.amazon.com/Samsung-Galaxy.../dp/B00H8482KQ € Input: 100-240V ~ 50-60Hz, 0.35A / Output: 5.0V=== 2.0A from the comments, there seems to be more than one version What I'm worried about is that I can't find a car adapter that is 5.3 volts and 2.0 amps or more. don't worry about it. it doesn't matter. 5.3v is noncompliant. all adapters will be 5v (or sometimes 5.1v). it makes no difference. |
#13
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On Wed, 13 Aug 2014 02:05:31 -0400, nospam wrote:
Input: 100-240V ~ 50-60Hz, 0.35A / Output: 5.0V=== 2.0A I had referenced the wrong charger. The OEM charger for the Note III is 5.3 volts, 2.0 Amps. http://forum.xda-developers.com/show....php?t=2504456 I can't find a 5.3 volt adapter for the car. |
#14
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In article
dhosting.com, Elechi Amadi wrote: Input: 100-240V ~ 50-60Hz, 0.35A / Output: 5.0V=== 2.0A I had referenced the wrong charger. The OEM charger for the Note III is 5.3 volts, 2.0 Amps. http://forum.xda-developers.com/show....php?t=2504456 it is not compliant with the usb spec. don't use it with anything other than a note iii and any other samsung product that it lists it will work with. I can't find a 5.3 volt adapter for the car. you won't and it makes no difference anyway. |
#15
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Elechi Amadi wrote:
I can't find a 5.3 volt adapter for the car. You don't want one, it could fry some other device you plug into it, just get a 5.0V 2.0A one and you'll be ok. |
#16
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In comp.mobile.android Andy Burns wrote:
Elechi Amadi wrote: I can't find a 5.3 volt adapter for the car. You don't want one, it could fry some other device you plug into it, just get a 5.0V 2.0A one and you'll be ok. It'll be fine. The USB spec goes up to 5.25V. The extra 50mV won't fry anything. In fact, the device probably won't even see it. If you're drawing 2A, you'd lose 50mV by a 25milliohm resistance in the cable. Given that USB cables contain hair-thicknesses of copper these days, that's not unlikely. I've seen cables with 1 ohm resistance. In fact, to get a resistance as low as 25mohm you'd need about 0.75mm^2 of copper - that's roughly the thickness of the cable that powers your desktop PC. A lower current draw will have less voltage drop, but any way you look at it what the device sees will be in spec. And the device would cope just fine with 5.3V straight, the DC-DC converter will have a much bigger margin. Theo |
#17
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Theo Markettos wrote:
Andy Burns wrote: Elechi Amadi wrote: I can't find a 5.3 volt adapter for the car. You don't want one It'll be fine. The USB spec goes up to 5.25V. The extra 50mV won't fry anything. The nominal 5.3V is already out of spec, who knows what the tolerance is on it, +/- 5% perhaps, so now it could be 300mV over, then someone charges an unprotected e-cigarette from it and ... http://google.co.uk/search?q=usb+cigarette+fire |
#18
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Elechi Amadi wrote:
On Wed, 13 Aug 2014 02:05:31 -0400, nospam wrote: Input: 100-240V ~ 50-60Hz, 0.35A / Output: 5.0V=== 2.0A I had referenced the wrong charger. The OEM charger for the Note III is 5.3 volts, 2.0 Amps. http://forum.xda-developers.com/show....php?t=2504456 I can't find a 5.3 volt adapter for the car. Hi, It is not that super critical. As long as charger is good quality. Also if you get wrong micro SD card, it won't work well. For example too fast one some times gives trouble. Follow the manual. Get a brand name like Samsung, Lexar.... |
#19
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13.8.2014, 8:53, Elechi Amadi kirjoitti:
On Wed, 13 Aug 2014 01:26:35 -0400, nospam wrote: usb must be 5v +- 0.25v, or 4.75-5.25v, which means the oem charger is not usb compliant. Here's a picture of the OEM EP-TA10JWS charger, showing the 5.3 volts! http://www.amazon.com/Samsung-Galaxy.../dp/B00H8482KQ That shows 5.0V/2.0A both in the pic and in the text What I'm worried about is that I can't find a car adapter that is 5.3 volts and 2.0 amps or more. -- ----------------------------------------------------- Thomas Wendell Helsinki, Finland Translation to/from FI/SWE not always accurate ----------------------------------------------------- |
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