I think a major difference is the distance the field generators are from your body. An electric blanket is virtually touching your body over a huge surface area. I suppose you would have too do some detailed comparisons to determine the effective flux density your exposed to. Run your electric blanket on DC? The control circuits are designed for AC. Also, inductive reactance would be nil with DC, how would you control the current with the blankets circuits designed for AC but putting DC to the blanket?
Yeah, I saw the bed spring entry too. It just never ends. Take reasonable precautions I say and don't worry about it. Jeff -----Original Message----- From: Jeffrey A. Madore <[email protected]> To: [email protected] <[email protected]> Date: Monday, December 06, 1999 11:20 PM Subject: Re: CS>Electric Blanket / O.T. > > >Jeff Gilman wrote: > >> The difference between the electro-magnetic flux you are exposed to between >> transformers and electric motors vs. an electric blanket is that the blanket >> is in very close contact with your body. How many motors or transformers to >> you sleep with? >> i.e. have VERY close to your body for many hours on end? Electromatic >> fields decrease INversely with the distance. That is, move the electrical >> object twice as far away and the field strength drops 4 X. Also, by design >> electric blankets are designed to cover your entire body (LARGE surface area >> in close contact). A hair dryer would >> not be as close, nor used as long, nor have anything appoaching the surface >> area of an electric blanket. > >Well...I guess I was thinking of duty cycle as well as flux density. > >My blanket is set at about 1.5 on a scale of 0 - 9. So, it clicks on for about 30 >seconds every 5 minutes. > >Transformers and motors are magnetic flux generators. Take an electric guitar >and approach the amp...major hum due to transformer's magnetic flux. A single >conducting wire produces a fraction of the flux. This flux is also current dependent. >The blanket has two electrically seperate sides...each draws less than 400ma. >My computer produces various fields that wipe out the receiver in my ham radio >rig, 4' away. It's everywhere. > >Since the current of the blanket is small, and the exposure time very intermittant, >I wonder if the actual harm (if it's indeed harmful) isn't minimal vs being cold. The >wires looping back upon themselves also may provide a degree of field cancellation. > >I have a king sized water bed with a 400 watt heater. I put several blankets over >the matress and was able to shut off the heater. I mostly did it to save electricity. >Then I put the e-blanket on top, with another blanket on top of that. The e-blanket > runs very little, as the blanket over it keeps the heat in. Sure beats maintaining >temp of all of that water 24hr per day. > >If I could find the slightest reason, reasonable anecdotal information, scientific >data, etc; to believe that I would benifit from staying away from AC fields, I'd >run it on DC. But then I'd probably read something about that being bad for me too. >Hey, if my wife didn't behave herself, I could just switch her to the south pole!!! > >Last night I read about bed springs sucking the energy out of you!!! ...and ground >water, hundreds of feet below grade, being major bad! I must be in a bad spot >cuz my well is only 12 ft deep...dug it myself. I guess the challenge is sorting >science from woga-woga. > >Jeff > > > >-- >The silver-list is a moderated forum for discussion of colloidal silver. > >To join or quit silver-list or silver-digest send an e-mail message to: >[email protected] -or- [email protected] >with the word subscribe or unsubscribe in the SUBJECT line. > >To post, address your message to: [email protected] >Silver-list archive: http://escribe.com/health/thesilverlist/index.html >List maintainer: Mike Devour <[email protected]> >
