Re: [time-nuts] White LED's
Max Robinson wrote: I remember hearing about a law suit in an engineering law class I had to take way back when. It seems a farmer had a long fence running under and parallel to a high tension distribution line. He had hidden a copper line in it and was harvesting enough power to operate most of his farm buildings. This amounted to a measurable loss from the distribution line and the power company found him out and sued. The court ruled he had to pay for power used in the past and stop getting his power that way. Considering the source I don't think this is an urban legend. Regards. Max. K 4 O D S. It sounds a bit of a myth to me. I've never done the maths, but I doubt you could get a lot of power from a wire like this. To power most of his farm machinery would need many kW. On the very high power lines, they tend to be location very high, in which case I would have thought the fields should cancel at long distances, as there will be 3 out of phase currents. I think for lighting, you might be able to claim you did it to reduce the E-field at your house, as you were worried by the health effects. Sine you need to dump the power somewhere, a light bulb seemed the cheapest dummy load. A 100 W light bulb is a lot cheaper than a 100 W resistor! On a similar note, I heard about someone who powered his greenhouse by using the small voltage between neutral and earth that will exist. I know there is at least 30 mA available at my house, as shorting neutral to earth will trip a 30 mA RCD. But I measured the voltage once, and whilst I can't recall what it was, it was less than 1 Volt. Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
PM Subject: Re: [time-nuts] White LED's Dr. David Kirkby wrote: I should have added, it carried on glowing for some time after I got home too. At that point, I was well away from the train lines, though we do have 11 kV overhead cables around 30m from the house. It eventually stopped glowing so I assume it was the presence of the overhead train lines which caused this. When I was a kid, there was a main set of high tension power lines several hundred yards from my house. I had friends that had garden sheds under the towers that were lit by fluorescent lamps collecting the stray fields. A piece of wire on each end of the bulb enhanced the effect. I knew of one guy that had a big coil of wire in the roof of his shed and he could light a 100W incandescent bulb from the stray fields. -Chuck Harris Max Robinson wrote: I remember hearing about a law suit in an engineering law class I had to take way back when. It seems a farmer had a long fence running under and parallel to a high tension distribution line. He had hidden a copper line in it and was harvesting enough power to operate most of his farm buildings. This amounted to a measurable loss from the distribution line and the power company found him out and sued. The court ruled he had to pay for power used in the past and stop getting his power that way. Considering the source I don't think this is an urban legend. Regards. Max. K 4 O D S. It sounds a bit of a myth to me. I've never done the maths, but I doubt you could get a lot of power from a wire like this. To power most of his farm machinery would need many kW. On the very high power lines, they tend to be location very high, in which case I would have thought the fields should cancel at long distances, as there will be 3 out of phase currents. I think for lighting, you might be able to claim you did it to reduce the E-field at your house, as you were worried by the health effects. Sine you need to dump the power somewhere, a light bulb seemed the cheapest dummy load. A 100 W light bulb is a lot cheaper than a 100 W resistor! On a similar note, I heard about someone who powered his greenhouse by using the small voltage between neutral and earth that will exist. I know there is at least 30 mA available at my house, as shorting neutral to earth will trip a 30 mA RCD. But I measured the voltage once, and whilst I can't recall what it was, it was less than 1 Volt. Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] White LED's
Hi,I'm late to the thread (as usual), but have looked at these LED's in the past. It was for a biotech imaging application. There are two types, a red/green/blue cluster or a blue / near UV LED with a white phosphor. These phosphors seem to have a fairly continuous spectrum, at least compared to fluorescent lamps and HID lamps. What surprised me was the speed. We had a strobe application for which a xenon strobe was proposed. I tried LED's (our optics expert said even normal LED's would not be fast enough). I knew normal LED's are fast enough but was unsure about the phosphor types. To my surprise they where faster than the xenon tube! They were faster than my detector. This has has an impact on the mill illumination in that you can get strobe effects that could cause you to think the spindle was stationary when it was not. This is more of a problem in a noisy environment than a home shop with only one machine running. Robert G8RPI. --- On Sat, 30/1/10, J. Forster j...@quik.com wrote: From: J. Forster j...@quik.com Subject: Re: [time-nuts] Conducting Bench Top Material To: Magnus Danielson mag...@rubidium.dyndns.org Cc: Discussion of precise time and frequency measurement time-nuts@febo.com Date: Saturday, 30 January, 2010, 1:15 To my aging eyes, the flashlight looks distinctly blue-white. I don't know how these particular LEDs are built, but the unit is less than a year old. -John === J. Forster wrote: Attached is a spectrum of a white LED Flashlight. My diode spectrometer does not go further than the limits shown. Looks pretty continuous to me. Great. I know there is non-continuous LEDs out there, but I hope they will fade to grey while continuous takes the market. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
The speed isn't terribly surprising since the phosphor used is actually a scintillator. Unlike phosphors scintillators don't have long decay times so there is no afterglow like that from a phosphor. The IKEA LED lamp output may not be significantly modulated if the wall wart constant current supply may have an output thats a little smoother than just rectified AC. Bruce Robert Atkinson wrote: Hi,I'm late to the thread (as usual), but have looked at these LED's in the past. It was for a biotech imaging application. There are two types, a red/green/blue cluster or a blue / near UV LED with a white phosphor. These phosphors seem to have a fairly continuous spectrum, at least compared to fluorescent lamps and HID lamps. What surprised me was the speed. We had a strobe application for which a xenon strobe was proposed. I tried LED's (our optics expert said even normal LED's would not be fast enough). I knew normal LED's are fast enough but was unsure about the phosphor types. To my surprise they where faster than the xenon tube! They were faster than my detector. This has has an impact on the mill illumination in that you can get strobe effects that could cause you to think the spindle was stationary when it was not. This is more of a problem in a noisy environment than a home shop with only one machine running. Robert G8RPI. --- On Sat, 30/1/10, J. Forsterj...@quik.com wrote: From: J. Forsterj...@quik.com Subject: Re: [time-nuts] Conducting Bench Top Material To: Magnus Danielsonmag...@rubidium.dyndns.org Cc: Discussion of precise time and frequency measurementtime-nuts@febo.com Date: Saturday, 30 January, 2010, 1:15 To my aging eyes, the flashlight looks distinctly blue-white. I don't know how these particular LEDs are built, but the unit is less than a year old. -John === J. Forster wrote: Attached is a spectrum of a white LED Flashlight. My diode spectrometer does not go further than the limits shown. Looks pretty continuous to me. Great. I know there is non-continuous LEDs out there, but I hope they will fade to grey while continuous takes the market. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Robert Atkinson wrote: Hi,I'm late to the thread (as usual), but have looked at these LED's in the past. It was for a biotech imaging application. There are two types, a red/green/blue cluster or a blue / near UV LED with a white phosphor. These phosphors seem to have a fairly continuous spectrum, at least compared to fluorescent lamps and HID lamps. What surprised me was the speed. We had a strobe application for which a xenon strobe was proposed. I tried LED's (our optics expert said even normal LED's would not be fast enough). I knew normal LED's are fast enough but was unsure about the phosphor types. To my surprise they where faster than the xenon tube! They were faster than my detector. This has has an impact on the mill illumination in that you can get strobe effects that could cause you to think the spindle was stationary when it was not. This is more of a problem in a noisy environment than a home shop with only one machine running. Traditional LEDs might not be optimized for speed, bug being GaAsP based they are probably not too shabby. InP and other fun (and fast) materials is used. Digging up on LEDs led me over YAG to bubble memories. Interesting side-effects of this discussion is that one learns more in fields one does not ponder too much over normally. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Chuck Harris wrote: I bought some of the LED replacements for Edison bulb incandescents, and they have an afterglow that lasts for several minutes. It is very much dimmer than when they are turned on, but is there none the less. -Chuck I got one of these so called 2D fluorescent tubes in a packet and bought it home on the train late in the evening. The trains are electric with cables overhead. What was strange was that the lamp was glowing dimly in the packet - I can only assume the E field from the overhead cables for the train was the source of power. Dave ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Dr. David Kirkby wrote: Chuck Harris wrote: I bought some of the LED replacements for Edison bulb incandescents, and they have an afterglow that lasts for several minutes. It is very much dimmer than when they are turned on, but is there none the less. -Chuck I got one of these so called 2D fluorescent tubes in a packet and bought it home on the train late in the evening. The trains are electric with cables overhead. What was strange was that the lamp was glowing dimly in the packet - I can only assume the E field from the overhead cables for the train was the source of power. Dave I should have added, it carried on glowing for some time after I got home too. At that point, I was well away from the train lines, though we do have 11 kV overhead cables around 30m from the house. It eventually stopped glowing so I assume it was the presence of the overhead train lines which caused this. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Or, possibly, your radiant personality :). - Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Dr. David Kirkby Sent: Saturday, January 30, 2010 12:47 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] White LED's Dr. David Kirkby wrote: Chuck Harris wrote: I bought some of the LED replacements for Edison bulb incandescents, and they have an afterglow that lasts for several minutes. It is very much dimmer than when they are turned on, but is there none the less. -Chuck I got one of these so called 2D fluorescent tubes in a packet and bought it home on the train late in the evening. The trains are electric with cables overhead. What was strange was that the lamp was glowing dimly in the packet - I can only assume the E field from the overhead cables for the train was the source of power. Dave I should have added, it carried on glowing for some time after I got home too. At that point, I was well away from the train lines, though we do have 11 kV overhead cables around 30m from the house. It eventually stopped glowing so I assume it was the presence of the overhead train lines which caused this. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Dr. David Kirkby wrote: I should have added, it carried on glowing for some time after I got home too. At that point, I was well away from the train lines, though we do have 11 kV overhead cables around 30m from the house. It eventually stopped glowing so I assume it was the presence of the overhead train lines which caused this. When I was a kid, there was a main set of high tension power lines several hundred yards from my house. I had friends that had garden sheds under the towers that were lit by fluorescent lamps collecting the stray fields. A piece of wire on each end of the bulb enhanced the effect. I knew of one guy that had a big coil of wire in the roof of his shed and he could light a 100W incandescent bulb from the stray fields. -Chuck Harris ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Hmm. Has anyone built a strobe light using LEDs instead of a xenon flash tube? I can see the appeal of building something that doesn't need high voltage to fire or trigger the tube. Yes, you probably couldn't get as much light as a big Xenon tube, but there are applications where you don't need to illuminate a large area. (Recent example of where I wished I had a stroboscope: looking at the balance wheel of a pocket watch). How high can you push the drive current of a LED if the pulse is short? Of course you have to keep the average dissipation below what the device is rated for, but there must be a peak current limit too. Dave On 30/01/2010 01:17, Robert Atkinson wrote: Hi,I'm late to the thread (as usual), but have looked at these LED's in the past. It was for a biotech imaging application. There are two types, a red/green/blue cluster or a blue / near UV LED with a white phosphor. These phosphors seem to have a fairly continuous spectrum, at least compared to fluorescent lamps and HID lamps. What surprised me was the speed. We had a strobe application for which a xenon strobe was proposed. I tried LED's (our optics expert said even normal LED's would not be fast enough). I knew normal LED's are fast enough but was unsure about the phosphor types. To my surprise they where faster than the xenon tube! They were faster than my detector. This has has an impact on the mill illumination in that you can get strobe effects that could cause you to think the spindle was stationary when it was not. This is more of a problem in a noisy environment than a home shop with only one machine running. Robert G8RPI. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
I have some Philips LED halogen downlighter replacements. They are rated at 3W and produce a noticeable glow when OFF. They are on a 2-way circuit and the stray capacitance of the wiring allows enough current for a faint glow. Robert G8RPI. --- On Sat, 30/1/10, Chuck Harris cfhar...@erols.com wrote: From: Chuck Harris cfhar...@erols.com Subject: Re: [time-nuts] White LED's To: Discussion of precise time and frequency measurement time-nuts@febo.com Date: Saturday, 30 January, 2010, 14:27 I bought some of the LED replacements for Edison bulb incandescents, and they have an afterglow that lasts for several minutes. It is very much dimmer than when they are turned on, but is there none the less. -Chuck Bruce Griffiths wrote: The speed isn't terribly surprising since the phosphor used is actually a scintillator. Unlike phosphors scintillators don't have long decay times so there is no afterglow like that from a phosphor. The IKEA LED lamp output may not be significantly modulated if the wall wart constant current supply may have an output thats a little smoother than just rectified AC. Bruce ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Hi Dave,Yes I have. There was also a design in NutsVolts a while back. Generally if you keep the duty cycle low (1:20) and pulses short (20ms) you can push most LED's to about ten times their maximum continuous rated current without ill effect. Looking at the continuous and pulse ratings of IR LED's can give an idea of the abuse LED's can handle. Some small white LEDs do have pulse specifications, they are used as the flash in cell phone cameras. They make very good small strobes with much less tail than the $200 miniature Hamamatsu xenon tubes we were comparing them to. Robert.G8RPI. --- On Sat, 30/1/10, Dave Martindale dave.martind...@gmail.com wrote: From: Dave Martindale dave.martind...@gmail.com Subject: Re: [time-nuts] White LED's To: Discussion of precise time and frequency measurement time-nuts@febo.com Date: Saturday, 30 January, 2010, 19:12 Hmm. Has anyone built a strobe light using LEDs instead of a xenon flash tube? I can see the appeal of building something that doesn't need high voltage to fire or trigger the tube. Yes, you probably couldn't get as much light as a big Xenon tube, but there are applications where you don't need to illuminate a large area. (Recent example of where I wished I had a stroboscope: looking at the balance wheel of a pocket watch). How high can you push the drive current of a LED if the pulse is short? Of course you have to keep the average dissipation below what the device is rated for, but there must be a peak current limit too. Dave On 30/01/2010 01:17, Robert Atkinson wrote: Hi,I'm late to the thread (as usual), but have looked at these LED's in the past. It was for a biotech imaging application. There are two types, a red/green/blue cluster or a blue / near UV LED with a white phosphor. These phosphors seem to have a fairly continuous spectrum, at least compared to fluorescent lamps and HID lamps. What surprised me was the speed. We had a strobe application for which a xenon strobe was proposed. I tried LED's (our optics expert said even normal LED's would not be fast enough). I knew normal LED's are fast enough but was unsure about the phosphor types. To my surprise they where faster than the xenon tube! They were faster than my detector. This has has an impact on the mill illumination in that you can get strobe effects that could cause you to think the spindle was stationary when it was not. This is more of a problem in a noisy environment than a home shop with only one machine running. Robert G8RPI. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Hi Dave: LEDs are used on many cell phone cameras in just that way. The data sheets for the LEDs have the pulse use specs. At: http://www.sd36.bc.ca/sulhts/departments/elx/p/elec.html scroll down to the Boy Scout Motor and notice a common LED held by two wires that's being used as a strobe light. Have Fun, Brooke Clarke http://www.PRC68.com Dave Martindale wrote: Hmm. Has anyone built a strobe light using LEDs instead of a xenon flash tube? I can see the appeal of building something that doesn't need high voltage to fire or trigger the tube. Yes, you probably couldn't get as much light as a big Xenon tube, but there are applications where you don't need to illuminate a large area. (Recent example of where I wished I had a stroboscope: looking at the balance wheel of a pocket watch). How high can you push the drive current of a LED if the pulse is short? Of course you have to keep the average dissipation below what the device is rated for, but there must be a peak current limit too. Dave On 30/01/2010 01:17, Robert Atkinson wrote: Hi,I'm late to the thread (as usual), but have looked at these LED's in the past. It was for a biotech imaging application. There are two types, a red/green/blue cluster or a blue / near UV LED with a white phosphor. These phosphors seem to have a fairly continuous spectrum, at least compared to fluorescent lamps and HID lamps. What surprised me was the speed. We had a strobe application for which a xenon strobe was proposed. I tried LED's (our optics expert said even normal LED's would not be fast enough). I knew normal LED's are fast enough but was unsure about the phosphor types. To my surprise they where faster than the xenon tube! They were faster than my detector. This has has an impact on the mill illumination in that you can get strobe effects that could cause you to think the spindle was stationary when it was not. This is more of a problem in a noisy environment than a home shop with only one machine running. Robert G8RPI. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Chuck Harris wrote: I bought some of the LED replacements for Edison bulb incandescents, and they have an afterglow that lasts for several minutes. It is very much dimmer than when they are turned on, but is there none the less. -Chuck Bruce Griffiths wrote: The speed isn't terribly surprising since the phosphor used is actually a scintillator. Unlike phosphors scintillators don't have long decay times so there is no afterglow like that from a phosphor. The IKEA LED lamp output may not be significantly modulated if the wall wart constant current supply may have an output thats a little smoother than just rectified AC. Bruce Some white LEDs use phosphors, others use scintillators it varies from manufacturer to manufacturer and part no to part no. Bruce ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
I remember hearing about a law suit in an engineering law class I had to take way back when. It seems a farmer had a long fence running under and parallel to a high tension distribution line. He had hidden a copper line in it and was harvesting enough power to operate most of his farm buildings. This amounted to a measurable loss from the distribution line and the power company found him out and sued. The court ruled he had to pay for power used in the past and stop getting his power that way. Considering the source I don't think this is an urban legend. Regards. Max. K 4 O D S. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with transistors group send an email to. funwithtransistors-subscr...@yahoogroups.com To subscribe to the fun with tubes group send an email to, funwithtubes-subscr...@yahoogroups.com - Original Message - From: Chuck Harris cfhar...@erols.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, January 30, 2010 12:21 PM Subject: Re: [time-nuts] White LED's Dr. David Kirkby wrote: I should have added, it carried on glowing for some time after I got home too. At that point, I was well away from the train lines, though we do have 11 kV overhead cables around 30m from the house. It eventually stopped glowing so I assume it was the presence of the overhead train lines which caused this. When I was a kid, there was a main set of high tension power lines several hundred yards from my house. I had friends that had garden sheds under the towers that were lit by fluorescent lamps collecting the stray fields. A piece of wire on each end of the bulb enhanced the effect. I knew of one guy that had a big coil of wire in the roof of his shed and he could light a 100W incandescent bulb from the stray fields. -Chuck Harris ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.432 / Virus Database: 271.1.1/2656 - Release Date: 01/29/10 19:35:00 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Oh I am certain that they can measure the losses, especially today. I disagree that harvesting the fields from a hundred feet away is theft, though. Especially if it is on your own property. The easements on my property give the power companies the right to come onto the property and maintain the lines, but they say nothing about giving them the right to immerse my property in high flux AC fields. They were written in a less technical era, but they are still in force. -Chuck Harris Max Robinson wrote: I remember hearing about a law suit in an engineering law class I had to take way back when. It seems a farmer had a long fence running under and parallel to a high tension distribution line. He had hidden a copper line in it and was harvesting enough power to operate most of his farm buildings. This amounted to a measurable loss from the distribution line and the power company found him out and sued. The court ruled he had to pay for power used in the past and stop getting his power that way. Considering the source I don't think this is an urban legend. Regards. Max. K 4 O D S. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] White LED's
Max wrote: I remember hearing about a law suit in an engineering law class I had to take way back when. It seems a farmer had a long fence running under and parallel to a high tension distribution line. He had hidden a copper line in it and was harvesting enough power to operate most of his farm buildings. This amounted to a measurable loss from the distribution line and the power company found him out and sued. The court ruled he had to pay for power used in the past and stop getting his power that way. Considering the source I don't think this is an urban legend. Both long wires running parallel to transmission lines and coils situated under transformers were used back in the day. The power companies' ability to detect small losses (hundreds of watts on a line carrying megawatts) has always been much better than the average person would think. Well-established law (at least in the US) holds that it is theft of services, although some folks think it should be otherwise. I knew several people who lit outbuildings with fluorescent tubes powered from wires strung in the near field of a 50 kW AM radio station I once worked for. The closest farmers had to take precautions putting up wire fences (limiting the continuous length and grounding at intervals), without which they could give you a nasty RF burn. Best regards, Charles ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
