Blue LED Doom!! | |
Anonymous Coward User ID: 10321246 United States 06/15/2012 10:25 AM Report Abusive Post Report Copyright Violation | I was told the other day by a friend that the power companies run low voltage on the ground line in your house for data acquisition. Quoting: Anonymous Coward 17925642 True. Also, POTS (plain old telephone service) runs 50 VDC, which is why you can use the phone when the power is out. Modern devices such as cordless phones, answering machines. and DSL modems bridge to the house power via the backplane and then the wall warts. Since most of this gear is designed for obsolecence, it is entirely possible to contribute bias/power to the house itself in the quantities needed to light this LED. But for the DOOM answer, it is ground facing radar from drones. inducing current in your house. you can literaly cook an egg with the big boy sets they put in these things now adays (no pilot=100kg more kit in the nose) |
Anonymous Coward User ID: 17983097 Sweden 06/15/2012 10:32 AM Report Abusive Post Report Copyright Violation | |
jannerfish
User ID: 17646516 United Kingdom 06/15/2012 10:43 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 10321246 United States 06/15/2012 11:03 AM Report Abusive Post Report Copyright Violation | If that diode is bipolar and made for that purpose then it would lit up in different colors when he changes polarity right? Quoting: Anonymous Coward 17973159 On video number two i think. Saw LED to flash very fast witch also indicate that is AC current. You are probably right in this case that it is A.C. power. But my understanding is that europe is on 60 Hz which is 6 times faster than the human eyes' frame rate. His camera frame rate might be catching the flicker, as when you see CRTs recorded on video. I am also right in that lots of LEDs are bipolar with the same color for high speed assembly. it just speeds up the process if you can seat and solder without regard to orientation on an otherwise symetrical (and relatively awkward component like an LED). The physical orientation of the lens is the priority (how the light shines out) rather than the cost of the additional gate (which is trivial, they are both on the same wafer) The test would be for him to use a continuty test on the meter to see if current will flow in both directions. Preferably with a diode check setting, cause saturation is possible. We are both potentially (hehe, electrical joke) right. Well met! |
Anonymous Coward User ID: 17859571 United States 06/15/2012 11:09 AM Report Abusive Post Report Copyright Violation | If that diode is bipolar and made for that purpose then it would lit up in different colors when he changes polarity right? Quoting: Anonymous Coward 17973159 On video number two i think. Saw LED to flash very fast witch also indicate that is AC current. You are probably right in this case that it is A.C. power. But my understanding is that europe is on 60 Hz which is 6 times faster than the human eyes' frame rate. His camera frame rate might be catching the flicker, as when you see CRTs recorded on video. I am also right in that lots of LEDs are bipolar with the same color for high speed assembly. it just speeds up the process if you can seat and solder without regard to orientation on an otherwise symetrical (and relatively awkward component like an LED). The physical orientation of the lens is the priority (how the light shines out) rather than the cost of the additional gate (which is trivial, they are both on the same wafer) The test would be for him to use a continuty test on the meter to see if current will flow in both directions. Preferably with a diode check setting, cause saturation is possible. We are both potentially (hehe, electrical joke) right. Well met! Europe is 50 cycles not 60 |
wanny1
(OP) User ID: 4410587 Netherlands 06/15/2012 12:04 PM Report Abusive Post Report Copyright Violation | Thanks for the pin guys. I still feel that this has not been fully explained. I'm going to try an external (Out, and away from my house) ground to see if the results are different. Its just that I have used LEDs in many applications before, some where I have had to test the led before installing, and I feel if it were as easy to test one, as holding a leg and touching the other to ground, I would have been told/discovered such a thing much sooner. |
Anonymous Coward User ID: 10321246 United States 06/15/2012 01:35 PM Report Abusive Post Report Copyright Violation | |
John Holmes User ID: 1198560 United States 06/15/2012 01:40 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1089603 New Zealand 06/17/2012 01:36 AM Report Abusive Post Report Copyright Violation | Thanks for the pin guys. Quoting: wanny1 I still feel that this has not been fully explained. I'm going to try an external (Out, and away from my house) ground to see if the results are different. Its just that I have used LEDs in many applications before, some where I have had to test the led before installing, and I feel if it were as easy to test one, as holding a leg and touching the other to ground, I would have been told/discovered such a thing much sooner. Surprised others havnt found the same thing happening, perhaps you hold charge ? my eldest son gets this, or there are some environmental disruptors in your vicinity, ? cell towers, power lines etc?. trip ! |
wanny1
(OP) User ID: 4410587 Netherlands 06/22/2012 05:00 PM Report Abusive Post Report Copyright Violation | Thanks for the pin guys. Quoting: wanny1 I still feel that this has not been fully explained. I'm going to try an external (Out, and away from my house) ground to see if the results are different. Its just that I have used LEDs in many applications before, some where I have had to test the led before installing, and I feel if it were as easy to test one, as holding a leg and touching the other to ground, I would have been told/discovered such a thing much sooner. Surprised others havnt found the same thing happening, perhaps you hold charge ? my eldest son gets this, or there are some environmental disruptors in your vicinity, ? cell towers, power lines etc?. trip ! I still haven't found the cause of this. Anyone else want to chime in? |