Dell Mini 9 Hardware Issues / Problems Inform everyone on any issues or problems with your Dell Mini 9 hardware.
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Join Date: Oct 2008
Re: Tingling on back of Mini's Lid - 03-12-2009, 10:03 PM
Join Date: Dec 2008
Location: Bristol, CT
Re: Tingling on back of Mini's Lid - 03-13-2009, 01:55 AM
Seems to me there is indeed metal in the lid. ergo, Dell logo. How this could have an impact, I'm not sure.
1) How extensive is the metal layer?
2) Is it possible to have very fine hairline cracks, with a component jumping current from the back into the metal and then again to the person? Seems like a strectch to me, yet not impossible.
3) plastics can have metal elements in them (I use a urethane casting resin with such), however, I wouldn't believe this to be the case here, with the exception of the logo foil. I haven't messed with my lid, thus don't know if it is simply injected moulded with the logo held between the core and cavity of the tooling or if the lid is a laminate process. I have just assumed injected.
Most interesting however.
"..... We measured various parts on the Mini9 Lid, and it varied between 1.5V and 2.0V, usually around 1.7V"
This was DC? I know it was, just asking to clarify.
I have a couple of electric fences. Off hand I can't tell anyone the voltage, as I'm not at home. Both are AC line in and DC out. One is a low voltage "garden fence" that gives small animals a "tingle" about like putting one's tongue on the terminals of a fresh 9 volt battery. The current pulses on and off, for a reason , that being to let go, esp. if your a small animal. I replaced it with a "cattle fence". This one gives a "good bit", even my son agrees . It also pulses, which is good as it will hold your fingers wrapped tightly otherwise.
My point is that they are in general not life threatening (exceptions, i.e. people with pacemakers, etc.) and also being the current is not constantly on, rather "on and off ".
To test any current with your hand (if you feel compelled to do so) always use the "back" of your fingers, not the "front", as if you indeed get a good "bit", your muscles contract causing your fingers to curl and in case of a wire for example locking on, whereas, touching with the back also causes the same reaction, however pulling your fingers away from the current or at least so you have a chance to pull yourself free.
Join Date: Feb 2009
Location: Tucson Arizona
Re: Tingling on back of Mini's Lid - 03-13-2009, 04:56 AM
I honestly feel that it is not being blown out of proportion.
Exposure to any voltage indicates a lack of a sufficient ground (or ground reference). If there is a failure of a power supply, that voltage could be passed on up the line. UK power supply input is 240V. OUCH!!!
Almost any voltage is deadly UNDER THE RIGHT CONDITIONS.
Runcore 64GB | 2GB RAM | ATP 16GB C6 SDHC | 1.3 Webcam | Bluetooth | OSX 10.5.6 | Fusion w/Windows XP | CrossOver | DellEFI 1.2A5 | BIOS A04 | 77Whr Battery
Will install OSX for Food
Join Date: Oct 2008
Re: Tingling on back of Mini's Lid - 03-13-2009, 05:12 AM
No voltage greater than @20VDC leaves the adapter...and this adapter isn't even close to being capable of generating enough current to kill you. Calm down chicken little...the sky hasn't fallen quite yet!
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