Re: FR adapter - shocking experience!
Just guessing, FR power supplies blocks are really high-tech ones if they contain a usb-powered 230V power inverter in the same package :-D to get 5VDC from 230VAC you need at least a transformer and a diode bridge + low voltage capacitors, or a step-down hasher like desktops/laptops power supplies. but, to get 230VAC from 5VDC, you will first need 5VAC with an oscillator, then a step-up transformer :) This is not something you'll find on a standard power supply plug :) Also, the shock would not be the same if you had been shocked with a normally operating 230v supply (I mean the amount of energy absorbed by your body) :) this is more likely to be a capacitor effect. There are some on the 230VAC side of all power supplies, to filter EMI. and a coil cannot store potential, it's a capacitor job :) a coil regulates spikes et reacts to transient voltages only. for DC current, a coil is a simple wire. sl 2008/10/9 Thorben Krueger <[EMAIL PROTECTED]> > It might be a case of the transformator working in reverse: A small > voltage applied to the usb output leads to a high voltage at the > prongs. This could also be caused by a capacitator on the low voltage > end, but I am not sure. > > Just guessing here. > > However, if you were to touch the prongs the moment they were out of > the socket, the coil could still hold some potential to shock you. > > Also just guessing. > > Thorben > > 2008/10/9 Christ van Willegen <[EMAIL PROTECTED]>: > > Hi, > > > > this morning, I pulled the FR adapter out of the (230 VAC) socket, and > > accidentally touched one of the prongs. I experienced a short shock. > > > > Is there a capacitor in there that can do that? It was fully out of > > the socket when I touched it! > > > > Christ van Willegen > > -- > > 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 > > > > ___ > > Openmoko community mailing list > > community@lists.openmoko.org > > http://lists.openmoko.org/mailman/listinfo/community > > > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
On Mon, 13 Oct 2008, Peter Fey wrote: > 2008/10/9 Carsten Gerlach <[EMAIL PROTECTED]> > Am Donnerstag 09. Oktober 2008 9:36:26 am schrieb Christ van Willegen: > > > > this morning, I pulled the FR adapter out of the (230 VAC) socket, and > > accidentally touched one of the prongs. I experienced a short shock. > > I can confirm that. I had the same "feeling" this morning, too. > > > I got a shock when I unplugged the FR adapter because the > Europlug-USplug-adapter didn't stay in place. The latch holding it in place > was loose > and my fingers touched the USplug while the Euro-End was still in the wall > outlet. This is my explanation for getting a shock, even though I did > not (want to) reproduce this. (also note the above posters names seem > European) > Some tape fixes this hardware bug. > > Peter > > I've had the same electric shock (230VAC) some months ago with Motorola E1000 and it's original charger-adapter and when I bought FR I've been more carefull with pluging and unpluging it's charger-adapter but still I think it should have been made a little more safety. Tom ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
El día Monday, October 13, 2008 a las 11:32:13AM +0200, Peter Fey escribió: > 2008/10/9 Carsten Gerlach <[EMAIL PROTECTED]> > > > Am Donnerstag 09. Oktober 2008 9:36:26 am schrieb Christ van Willegen: > > > > > > this morning, I pulled the FR adapter out of the (230 VAC) socket, and > > > accidentally touched one of the prongs. I experienced a short shock. > > > > I can confirm that. I had the same "feeling" this morning, too. > > > > I got a shock when I unplugged the FR adapter because the > Europlug-USplug-adapter didn't stay in place. The latch holding it in place > was loose and my fingers touched the USplug while the Euro-End was still in > the wall outlet. This is my explanation for getting a shock, even though I > did not (want to) reproduce this. (also note the above posters names seem > European) > Some tape fixes this hardware bug. I don't know if we are talking about the same Europlug-USplug-adapter; I've checked mine and if the Europlug is connected to the wall outlet and you open the latch which holds together the charger (with US contacts) and pull downwards the charger, the UC contacts are coming out of the Europlug, but before you could touch them with the finger, theu're already away from the electrical parts of the Europlug... maybe with a blade of a knife you could reach the US contacts before going away from the electrical parts of the Europlug; matthias -- Matthias Apitz Manager Technical Support - OCLC GmbH Gruenwalder Weg 28g - 82041 Oberhaching - Germany t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211 e <[EMAIL PROTECTED]> - w http://www.oclc.org/ http://www.UnixArea.de/ b http://gurucubano.blogspot.com/ A computer is like an air conditioner, it stops working when you open Windows Una computadora es como aire acondicionado, deja de funcionar si abres Windows ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
On Mon, Oct 13, 2008 at 11:53 AM, Cédric Berger <[EMAIL PROTECTED]> wrote: > I am interested to know if this can happen with our adapter... but > this is not the kind of tests you are willing to do yourself :-p ! Especially not with your tongue sticking out! It was not a case of the US prongs showing (I am in .eu, indeed... .nl even!) Christ van Willegen -- 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
On Mon, Oct 13, 2008 at 11:32, Peter Fey <[EMAIL PROTECTED]> wrote: > I got a shock when I unplugged the FR adapter because the > Europlug-USplug-adapter didn't stay in place. The latch holding it in place > was loose and my fingers touched the USplug while the Euro-End was still in > the wall outlet. This is my explanation for getting a shock, even though I > did not (want to) reproduce this. (also note the above posters names seem > European) First poster wrote that "It was fully out of the socket when I touched it!" ... I am interested to know if this can happen with our adapter... but this is not the kind of tests you are willing to do yourself :-p ! ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
2008/10/9 Carsten Gerlach <[EMAIL PROTECTED]> > Am Donnerstag 09. Oktober 2008 9:36:26 am schrieb Christ van Willegen: > > > > this morning, I pulled the FR adapter out of the (230 VAC) socket, and > > accidentally touched one of the prongs. I experienced a short shock. > > I can confirm that. I had the same "feeling" this morning, too. > I got a shock when I unplugged the FR adapter because the Europlug-USplug-adapter didn't stay in place. The latch holding it in place was loose and my fingers touched the USplug while the Euro-End was still in the wall outlet. This is my explanation for getting a shock, even though I did not (want to) reproduce this. (also note the above posters names seem European) Some tape fixes this hardware bug. Peter ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
hahaha. We should find the way to send a litle shock when trying to snooze the alarm three times. :-) Kosa - Un mundo mejor es posible - Fox Mulder escribió: > Carsten Gerlach wrote: > >> Hi, >> >> Am Donnerstag 09. Oktober 2008 9:36:26 am schrieb Christ van Willegen: >> >>> this morning, I pulled the FR adapter out of the (230 VAC) socket, and >>> accidentally touched one of the prongs. I experienced a short shock. >>> >> I can confirm that. I had the same "feeling" this morning, too. >> > This is a nice way to better wake up in the morning. :) > > Ciao, > Rainer > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
Carsten Gerlach wrote: > Hi, > > Am Donnerstag 09. Oktober 2008 9:36:26 am schrieb Christ van Willegen: >> this morning, I pulled the FR adapter out of the (230 VAC) socket, and >> accidentally touched one of the prongs. I experienced a short shock. > > I can confirm that. I had the same "feeling" this morning, too. This is a nice way to better wake up in the morning. :) Ciao, Rainer ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
Hi, Am Donnerstag 09. Oktober 2008 9:36:26 am schrieb Christ van Willegen: > > this morning, I pulled the FR adapter out of the (230 VAC) socket, and > accidentally touched one of the prongs. I experienced a short shock. I can confirm that. I had the same "feeling" this morning, too. Greetings, Carsten -- Hier ist mein öffentlicher GPG-Schlüssel: http://daswaldhorn.funpic.de/gpg.html = www.stopptdievorratsdatenspeicherung.de signature.asc Description: This is a digitally signed message part. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: FR adapter - shocking experience!
It might be a case of the transformator working in reverse: A small voltage applied to the usb output leads to a high voltage at the prongs. This could also be caused by a capacitator on the low voltage end, but I am not sure. Just guessing here. However, if you were to touch the prongs the moment they were out of the socket, the coil could still hold some potential to shock you. Also just guessing. Thorben 2008/10/9 Christ van Willegen <[EMAIL PROTECTED]>: > Hi, > > this morning, I pulled the FR adapter out of the (230 VAC) socket, and > accidentally touched one of the prongs. I experienced a short shock. > > Is there a capacitor in there that can do that? It was fully out of > the socket when I touched it! > > Christ van Willegen > -- > 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
