Database Users

Electric Charges while charging

Hi,
Any of you feel that there is electric charges on ur ear while charging when making a call? when i disconnect the cable it is okay. only on the receiver portion. could it be a faulty battery?

I've not experienced that issue, but then again I've not tried using the phone during charging.
Are you charging from the mains charger, or from a PC?
It is most probably a small amount of electricity "leaking through" down the cable from whatever you are charging it from.
This might sound a bit scary, but is not necessarily a danger or even a fault. PC power supplies in particular have components to stop EMC (radio interference) that can sometimes cause a bit of this "electrical leakage".
If you are using the supplied charger, make sure it is not damp or wet, as this really could be a danger.
- Steve

Hi,
I am refering to the charger. using PC is okay. i tried with different power point still the same. no it is dry. shld i go to the service center

I just tested the electrical mains leakage current from my own charger.
It's around 15 microamps, probably not enough for most people to feel but maybe on a sensitive part like the ear it's possible. I think that the CE requirement is 250 microamps maximum so it meets statutory requirements.
Obviously I cannot tell whether there is a fault in your charger, but if it was mine and the current was not actually uncomfortable, I wouldn't worry too much about it. I would expect genuine HTC chargers to be 100% safety tested.

i did notice the same from mine while using the wall charger.. on my hand tho not my ear.. more than once.. kind of weird.. but w/e haha

Yes, I have had 4 HTC phones for myself and every of them has done it while on wallcharger. It is kinda annoying when speaking on the phone.
Wizard did it really much and couldnt sometimes talk on the phone same time.
2 Diamonds did it, one i use now has invisible shield so it kinda stays in them because of rubber
HD does that but not much or not at all.
Maybe it is because of aluminium or metal casing on phone like wizard and Diamond, havent yet tested HD much. Got it yesterday :>

Hi,
so it a norm for all HTC device? so it is not faulty?
thankx

[Q] Electric shock or tingling effect on legend when charging

iam experiencing a electric shock or tingling effect from the body of my htc legend when charging.it goes of when i pick it up.upon placing it on some surface the same effect returns.iam a new one here,is it a faulty handset.it is there only when charging. please help

I'm pretty sure its a bad handset, a connector for charging the battery is exposed and touching the aluminum casing.
Sent from my Legend using XDA App

Your power source are not properly grounded.

its nt there when charging from my laptop

Your laptop only charges at half the rate of the AC adapter, it probably still is putting current through the aluminum case, but you don't feel it.

marclh1992 said:
I'm pretty sure its a bad handset, a connector for charging the battery is exposed and touching the aluminum casing.
Sent from my Legend using XDA App
Click to expand...
Click to collapse
how is that possible.im afraid

driftcat said:
its nt there when charging from my laptop
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Click to collapse
Well, thats because I had similar experience. I used to connect my phone to my laptop with AC adaptor (faulty battery) till one day when it was a goner, I bought a new slim OEM version which do not come with ground (2pin vs 3pin with grounding on stock adapter). Ever since, I have had electric shock whenever Im connecting to my laptop.
I have gotten electric shock when using the stock charger as well. The old wiring at my in-laws house probably the cause for it. It was okay at home.

andrekua said:
Well, thats because I had similar experience. I used to connect my phone to my laptop with AC adaptor (faulty battery) till one day when it was a goner, I bought a new slim OEM version which do not come with ground (2pin vs 3pin with grounding on stock adapter). Ever since, I have had electric shock whenever Im connecting to my laptop.
I have gotten electric shock when using the stock charger as well. The old wiring at my in-laws house probably the cause for it. It was okay at home.
Click to expand...
Click to collapse
Sent from my HTC Legend using XDA App
So u r saying my phone is at fault or the wiring

TL;DR, replace the handset.

Is anybody having the same fault.place the handset on a surface when plugged in to the power and rub Ur finger on to the metal part of Ur legend.
Members please see for urself.
Sent from my HTC Legend using XDA App

"iam experiencing a electric shock or tingling effect from the body of my htc legend when charging.it goes of when i pick it up.upon placing it on some surface the same effect returns.iam a new one here,is it a faulty handset.it is there only when charging. please help"
Are you sure you bought an HTC Legend? Are you sure it's not a defibrillator?

Your phone is just fine, don't worry. The effect your are feeling on your skin is caused by the charger and has nothing to to with the phone. There are some unqualified posts in this thread (e.g. problem with wiring, charging current) which should best be ignored.
To the effect itself. The charger isolates the mains power from the secondary power through the use of a transformer. Also our new small power supplies work with transformers, but operate them at a higher frequency (sometimes audible) after the main power has been rectified. But the power supplies represent also an electric capacity, and therefore the secondary output may charge up relative to ground. But this capacity is so small, that you may feel a voltage on your skin but there is no risk whatsoever. By the way, the back of the finger is very sensitive. Try to move it along metallic surfaces of other device (e.g. desk lamp) and you may fell the electric potential. The only way to completely avoid this is to use a grounded power supply, like some used to charge laptops.
Markus

yep. use groundod power supply. i have this thing when charging from my laptop and the laptop adapter is not properly grounded.
dont worry, its normal and negligible.

nethopper said:
Your phone is just fine, don't worry. The effect your are feeling on your skin is caused by the charger and has nothing to to with the phone. There are some unqualified posts in this thread (e.g. problem with wiring, charging current) which should best be ignored.
To the effect itself. The charger isolates the mains power from the secondary power through the use of a transformer. Also our new small power supplies work with transformers, but operate them at a higher frequency (sometimes audible) after the main power has been rectified. But the power supplies represent also an electric capacity, and therefore the secondary output may charge up relative to ground. But this capacity is so small, that you may feel a voltage on your skin but there is no risk whatsoever. By the way, the back of the finger is very sensitive. Try to move it along metallic surfaces of other device (e.g. desk lamp) and you may fell the electric potential. The only way to completely avoid this is to use a grounded power supply, like some used to charge laptops.
Markus
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i contacted htc support.the person over there asked me to bring the handset to the service center.r u saying i should not take it there,and avoid the whole thing

driftcat said:
i contacted htc support.the person over there asked me to bring the handset to the service center.r u saying i should not take it there,and avoid the whole thing
Click to expand...
Click to collapse
Yes, keep your Legend and enjoy it...

If i had this problem i would most likely first try an other power adapter
if the problem is gone fine!!!
if not then i would send it to HTC service

I had the same problem for a while, changed the charger cable (Micro USB to USB-A bit) and it fixed it
Oh the comment about a difibrilator..........Nice!!
Mike

Build a wind-up charger for your phone for under $10

Build a wind-up charger for your phone, brought to you by ultramodder Ben Heck
Beware, this requires some knowledge of a soldering iron.
This sounds like a cool idea, I may try it out for myself!

steveyoo97 said:
Build a wind-up charger for your phone, brought to you by ultramodder Ben Heck
Beware, this requires some knowledge of a soldering iron.
This sounds like a cool idea, I may try it out for myself!
Click to expand...
Click to collapse
Any idea what the gel used to hold the USB port in place is? I've got all of that stuff already...except for the gel.

KWKSLVR said:
Any idea what the gel used to hold the USB port in place is? I've got all of that stuff already...except for the gel.
Click to expand...
Click to collapse
Hot glue maybe? Kinda what it looks like to me.

That's the only thing I can think of.

Interesting.
I carry one of these and a USB cable in my backpack if I'm going to be away from the house or car for an extended period, just in case:
http://www.batteryspace.com/batteryholderaax4withusbinterfaceconnectorandbeltcliponoffpowerswitch-rohscompliant.aspx
Works great and has saved me several times.

My eyes are rusty. Is that a 1/4 watt 10 ohm resister he uses or a 1/8 watt 10 ohm resister?
It should be a 1/4, right?
Current isn't exactly my strong suit....but I'm always up for experimentation.

Flak_Munky said:
Hot glue maybe? Kinda what it looks like to me.
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Click to collapse
Hot glue is sometimes good but it can break loose
At a Hardware or Home depot store you can buy plumber goop, it is polymer soft hardening adhesive (really it is wet suit patch glue) anyway it sticks to EVERYTHING ! so is you use this wear glove and make sure you do not get it on you it ihard to get off Denatured Alcohol works...kinda
BUT........ this is great stuff for those real odd fix needs....... oh ya it also will fix a leaking pipe

KWKSLVR said:
My eyes are rusty. Is that a 1/4 watt 10 ohm resister he uses or a 1/8 watt 10 ohm resister?
It should be a 1/4, right?
Current isn't exactly my strong suit....but I'm always up for experimentation.
Click to expand...
Click to collapse
I think it is 1/4. But I am not 100%.
I had some free time this last week or so, and I put one together and I used the 1/4. I had to improvise on the USB adapter (cut the end from a cable and tried to clean it up - works but not perfect need to order some USB ends for this).
It does work, but the best I could get was about 40 mAh output, so this would take forever to charge a device enough to do anything with. I'm looking at experimenting with a larger flashlight, hopefully one with a better generator/gear ratios to produce a little higher output.
Also, thinking about a dual purpose one. Crank + a solar cell that I found that in full direct sunlight can produce a high enough voltage and about 100 mAh. This stuff is not my forte, but I like to play around and experiment.

[Q] Transformer dock surface current

Hey there,
do any of you experience a strange electricity like sensation when touching the surface of the keyboard dock while it is charging and the transformer is docked? Especially directly to the left of the touchpad and on that middle part just above the keyboard keys. I want to know if I just have a thinly insulated one and should return it or if that is a general thing.
It's very noticable when sliding the finger over the surface lightly.

If you get it while charging plug the charger into the socket upside down, this should fix it.
While it's on USB no idea how to get rid of it but USB's current output isn't strong enough to do anything.

What the heck.. putting the charger in upside down did fix it!
Thank you very much! And why does that work?

I too feel the strange electricity feel when I move my fingers over the dock case while recharging. When I pull out the charger, the feeling is gone.
This is not normal!

Seriously, this is a combination of personal confirmation bias and a weird texture on the keyboard. You will notice you only feel if when your hand is actually moving across the surface, never just touching it. The dock case is made of plastic, so while it's possible for it to hold a static charge induced through friction it will NOT conduct any current from the power supply or battery. After some use this texture clearly wears in a little and the sensation stops.

Then why goes the feeling away when I unplug the charger and is there again when I replug the charger?
The feel is always there, only it is greater when sliding over ther surfaces or edges.
Seriously, there is an electric feel.

triumph_st said:
Then why goes the feeling away when I unplug the charger and is there again when I replug the charger?
The feel is always there, only it is greater when sliding over ther surfaces or edges.
Seriously, there is an electric feel.
Click to expand...
Click to collapse
Rather than reply, you should look up 'Confirmation Bias'
sassafras

duclicsic said:
Seriously, this is a combination of personal confirmation bias and a weird texture on the keyboard. You will notice you only feel if when your hand is actually moving across the surface, never just touching it. The dock case is made of plastic, so while it's possible for it to hold a static charge induced through friction it will NOT conduct any current from the power supply or battery. After some use this texture clearly wears in a little and the sensation stops.
Click to expand...
Click to collapse
No, the sensation wil not stop if the surface were to "wear down", it has nothing to do with the texture of the device. The only way it will stop is by flipping the transformer around.
That said you will not get any type of shock from this (unless its realy defective).

I will believe it when someone gets a multimeter on there and confirms there is a potential between the case and ground, but since the case is an insulator I have serious doubts this will ever happen.
You realise that you're suggesting that a current is flowing from the power supply of your transformer, through the plastic case, into your hands and back to ground? That or you're feeling an electric field throgh the plastic, which must be on the order of several kilovolts to produce such a sensation..
Basically the concept that you are feeling an electrical phenomenon is not at all credible.

Ha I noticed this today only since getting to Spain and having to use the Euro plug which you can plug in 'upside down'.
I've never felt it in the UK and all morning I've been thinking "man thats wierd" - I log onto XDA and the 1st post I see relates to it... just turned over my adapater and its gone.

duclicsic said:
Seriously, this is a combination of personal confirmation bias and a weird texture on the keyboard. You will notice you only feel if when your hand is actually moving across the surface, never just touching it. The dock case is made of plastic, so while it's possible for it to hold a static charge induced through friction it will NOT conduct any current from the power supply or battery. After some use this texture clearly wears in a little and the sensation stops.
Click to expand...
Click to collapse
If you don't know anything about what you are claiming to understand, don't post. There ae several long threads on this earlier and the issue is real and has been verified. It is leakage from the wall charger and has been measured and verified using an osciliscope (which has no feeling) . With the plug in one direction there is about 5V AC while with the plug in the other orientation, there is about 60VAC. Sorry for being abrupt, but you claim in wrong.

duclicsic said:
I will believe it when someone gets a multimeter on there and confirms there is a potential between the case and ground, but since the case is an insulator I have serious doubts this will ever happen.
You realise that you're suggesting that a current is flowing from the power supply of your transformer, through the plastic case, into your hands and back to ground? That or you're feeling an electric field throgh the plastic, which must be on the order of several kilovolts to produce such a sensation..
Basically the concept that you are feeling an electrical phenomenon is not at all credible.
Click to expand...
Click to collapse
If you haven't noticed, the bezel of the Transformer and the body of the keyboard dock are metal or metallized.
Please search before you talk trash.

I have this feeling too, when i just got my TF.
I would like to try to plug the charger upside down, but over here, my plug has three legs, hence there is no way i can do that....
Any one who have solve this issue, please share.

wildpig8 said:
I have this feeling too, when i just got my TF.
I would like to try to plug the charger upside down, but over here, my plug has three legs, hence there is no way i can do that....
Any one who have solve this issue, please share.
Click to expand...
Click to collapse
That's wierd, see though that's how it shoulda been in the first place, there should have been a ground prong on it so that this wouldn't even be possible to begin with. Doesn't the plug itself though come apart in 2 peices? I know it's supposed to but mine came togehter, but maybe pull it apart and flip the 2 peices? Dunno if that's possible since mine was already together so no clue what it looks like apart.

Is the dock case plastic? Looks and feels like metal (inside keyboard side).

OK, just plugged in the charger: I feel electricity. I turn the euro (I am in Belgium) plug round and the feeling is gone.

darkonex said:
That's wierd, see though that's how it shoulda been in the first place, there should have been a ground prong on it so that this wouldn't even be possible to begin with. Doesn't the plug itself though come apart in 2 peices? I know it's supposed to but mine came togehter, but maybe pull it apart and flip the 2 peices? Dunno if that's possible since mine was already together so no clue what it looks like apart.
Click to expand...
Click to collapse
The country adapter (plug) snaps in and out very hard. Originally,it came as two pieces,but now comes assembled (maybe because there were issues getting it to assemble correctly). Mine came unassembled. There are only two conductors in the charger assy (hot and neutral) no ground. I am betting the third pin on your plug (gnd) is connected to nothing. When plugged in in onedirection there is leakage to the shield of the usb connector which is connected to the shield of the charge connector which is connected to the metal frame around the edge of the TF.

It's fun watching all this unfold for people who don't use the search tools here. OP, search for this, it's been exhausted in several threads, with measurements, testing, power supply revisions etc etc.

Lanpirate said:
It's fun watching all this unfold for people who don't use the search tools here. OP, search for this, it's been exhausted in several threads, with measurements, testing, power supply revisions etc etc.
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Sorry, then I am using the wrong search words because I cannot find those threads ...

triumph_st said:
Sorry, then I am using the wrong search words because I cannot find those threads ...
Click to expand...
Click to collapse
Look here
http://forum.xda-developers.com/showthread.php?t=1077595

Galaxy Note Inductive Charging Mod

I modified my Galaxy Note to use inductive charging via a palm touchstone / patch.
Just a quick note. Not a whole lot to contribute here, because I largely followed the examples of the Qian Qi. That guy is awesome.
I don't think I voided a warranty, either. Only minimal teardown required (black plastic back, then the speaker section). Never came across a sticker I had to remove....
Useful links:
galaxy s inductive charging mod
evo 4g induction charging mod
galaxy note teardown video
galaxy note teardown pics
Notes:
- Buy a good soldering iron. Weller WESD51, set to 610 deg F, with 1/32" long conical tip, with lots of flux and lots of flux remover are the only reason I could do this. I can't stress enough the value of having good temperature control, knowledge of temperature, and so forth. I stumbled around with an "ordinary" soldering iron for a long time, and in hindsite, I can't believe I did so.
- Do not choke on the price. I already had a lot of soldering gear, and I bought $220 more. Spend the money. It's worth it.
- Watch the curious inventor youtube videos on soldering. This guy. Watch everything, several times. http://store.curiousinventor.com/
- You want 30 gauge wire. It's the only thing that just barely can be crammed in. I used the "Kynar" coated type. Buy at least 2 colors.
- as you look at the phone disassembled, with speaker on the bottom left, the +5 pin on the micro usb (MHL) port is the leftmost. I attached a wire to that, and a ground wire to the housing where the port was soldered.
- routed the wires under the speaker, then back, then into a VERY slight indentation into the battery compartment. used a blue "safe open" tool to help shape the wire / crimp ends. Once in the battery compartment, you're golden. Attach the inductive charging coil to the back of the samsung plastic back, add solder to the pads, and attach the wires.
- Attached is a picture with roughly how I routed wires. Red is +5V, Blue is ground. Be sure and double check if my recollection is right where the indentation is into the battery compartment. (that part is by memory).
- dont leave too much slack. it's really hard to get the samsung black pastic panel back on. Mine very slightly bulges.
- be careful where you put the charging sticky patch, because this phone is a little bit bigger than a palm pre. You have to consider if the phone can sit on the charger and "lock in" with the magnets. If you place it too high, it actually can't (in portrait)!
- Qian Qi had a really interesting point: most articles about how Li-ion batteries behave are wrong, and fully discharging the battery drastically reduces the number of cycles you have. So this is actually a very useful mod--whenever you don't use the phone, toss it on the charger.

Thanks for summing it up! Was actually thinking of doing this mod myself. Question: do you have a protective case on your Note? If so - what kind and how badly does it affect the magnetic properties?

No case. Especially because the note is so big, I think it would be unmanageable.
I took the samsung thin plastic back, and placed the Palm PRE (with charging coil still attached) on top of it, on the touchstone -- to figure out proper placement & mark with a pencil. I noticed a buzzing sound, coming from (I think) the induction coil on the palm pre back itself. I suspect if you use a case, this wont work well.
Also, the size/weight/placement of the galaxy note are such that the magnets are just barely strong enough to hold it. One time my phone was near, but off, the charger. I'm not sure if vibration from the phone did that, or my kids
In summary, I'm not sure how well it would work with a case. You might be able to research this on the net; among the 15 or 20 people that have bought a Pre, you might be able to find some info about the effect of a case on inductive charging.

tight squeeze?
im wanting to try this mod i have my touchstone on the way not thank you amazon but it seems like to me that the pad from the pre wouldnt fit under the cover of our phablet =/ could you post pics of the finished product and i think this is the only instance that i have seen someone attempt this with the note and i want to try it i love my note but would love it even more with inductive charging.

I am not the original author but I performed a different Touchstone mod and posted pics here:
http://forums.androidcentral.com/sa...1-galaxy-note-touchstone-mod-photo-heavy.html
Hope it helps!
-darren
Sent from my GT-N7000 using Tapatalk 2

Thank you!!!
Thank you so much for your post I have my materials on the way but I hadn't seen a detailed guide for the note other than this one and was worried I would have to solder directly to the usb pins which looked scary lol I did have two questions though would your mod work the same way for the at&t note? Specifically the points where you soldered to the phone and can wireless charging be performed through a case?

Hey, OP here. You may want to hold off just a bit. Mine is exhibiting some issues now. As in, it says "charging" but it doesn't do so wirelessly. The phone will stay "charging" but the battery % never goes up. (It was slow before, but would charge fully over a night).
Charging via USB still works.
It may be something simple; I'm not sure. But I need to crack it open and take a peek, and I haven't had time to do that yet because my phone is functional at the moment.
If nothing has conspicuously changed, there may be something about the design that isn't sustainable. Or maybe my solder joint halfway broke, or one of the wires got smashed enough so that it's partially broken...
I'll write back with my findings. Bug me if I don't

Thanks for the notice I was about to pull the trigger lol tbh I probably shouldn't attempt this I've never done a mod like this before and I'm not exactly a surgeon with a soldering iron lolvthatvbeing being said I'm going to attempt this on an old evo 4g I have before I do surgery on my baby lol plus I'm already familiar with the guts of an evo from screen repairs ill report back with my results
Sent from my SAMSUNG-SGH-I717 using xda premium

Success it took some doing but I got it I haven't done the mod on my note yet but I did it on my evo last night and it works its rough I haven't cleaned it up yet but I'll post the pics I got this mod from www.goodandevo.net
Sent from my SAMSUNG-SGH-I717 using xda premium

Thank you for this post.
Sent from my SAMSUNG-SGH-I717 using Tapatalk

No prob I just wanted to see if i could do it and if I can do it with little soldering experience I'm sure most could do it I haven't done this mod to my galaxy note though as there is way less room in its a far more complicated mod than the evo because you have to make room for wires in a device samsung made as thin as possible and the way you have to route the wires I feel like the solder joints would just break
Sent from my SAMSUNG-SGH-I717 using xda app-developers app

For those who want to try this out but still have warrantee just buy a backcover, a micro usb plug and assemble it according to the directions here.If you need the note just take out the usb plug and the back cover and you're good to go.... Or leave it there.....
For those who don't know what pins to use on the usb plug:
Pin: 1 is 5V+ (red)
Pin: 5 is GND (black)
Works like a charm.......
becosemsaida

Cool mod! Does it affect the stylus operation though?

pboesboes said:
Cool mod! Does it affect the stylus operation though?
Click to expand...
Click to collapse
yes it affects the stylus sometimes it reacts with delay and sometimes it clicks although only hovers over it

pboesboes said:
Cool mod! Does it affect the stylus operation though?
Click to expand...
Click to collapse
I was not a big stylus user; I can't stand the input lag. I didn't notice a difference, but I always considered the input speed unacceptable. Not sure why there would be any difference, anyway.
My big problem that I've never taken the time to address is that after some time, it's as though I can't pull enough current through the wires to charge. One day I need to crack this open & figure out why.

gr8 n interesting post
wonder how fast can a full charge be completed
regards

strategist99 said:
gr8 n interesting post
wonder how fast can a full charge be completed
regards
Click to expand...
Click to collapse
It is slower than normal, but completed in a night. I still have not dismantled my phone to attempt to repair this, but I want to soon