On Sat, Oct 31, 2015 at 10:47 AM, James Cameron wrote: > On Sat, Oct 31, 2015 at 10:26:12AM +0200, embedded systems wrote: > > The weird thing is that works. I've seen for the first time this > > behavior on an old Grunding TV back in 1995 or so. The standby LED > > keep lighting more than one full day with the TV unplugged from the > > power supply. The filtering capacitors alone can't do that. That TV > > had no backup battery... > > Did it happen to have an internal or external antenna resonant at a > frequency for which there was a powerful transmitter nearby? ;-) > As long you have RF measurement tools you know the garbage you have nearby...:) Sure you can light a LED from an antenna, but when the LED is connected in the power supply chain of a TV (a very old one in which the high voltage is generated by two thyristors), you can't. I strongly and seriously suggest to review Nikola Tesla patents involving resonance, trying to understand what resonance is in his opinion. There are a few dozens. Other *people with opened and rested minds* are "tariel kapanadze', "akula' and so on. Enjoy at least the idea you don't understand what you see. :) --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .