Re: TV vs Hair Dryer ?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Dave Lewis <hvdave-at-earthlink-dot-net> 

I'm with Terry.  For sure its your sprinkler valves or the like.  My
automatic sprinkler valves always go nuts when I run my coil.  Even my
marx generator makes them gurgle.

Dave Lewis



Tesla list wrote:
 >
 > Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 >
 > Hi,
 >
 > If you have an automatic lawn watering system or some other electronic
 > valves in the water system (clothes/dish washer), maybe they were tripped
 > on momentarily.  That is all I can think of that could cause this.
 >
 > Cheers,
 >
 >          Terry
 >
 > At 09:53 AM 9/28/2003, you wrote:
 > >Speaking of water pipes, A while back I was running a coil in the garage,
 > >letting the arc strike the metal garage door which is grounded to some
 > >nearby water pipes.  About 10 minutes later my wife came out, drying her
 > >hair,  and asked what was going on with the water.  She had been taking a
 > >shower during the time I was running the coil and noticed surges in the
 > >water pressure.  I wondered at the time if these surges could be the
 > >result of some sort of magnostrictive effect in the plumbing.  Anyway, I
 > >now make it a point to never run a coil when someone is in the
 > >shower.  Probably an unjustified fear, but you never know.
 > >
 > >Dave
 > >At 05:18 PM 9/27/03 -0600, you wrote:
 > >>Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 > >>
 > >>Hi Christoph,
 > >>
 > >>At 12:09 AM 9/28/2003 +0200, you wrote:
 > >>>Hello all!
 > >>>
 > >>>Today I came around some strange occourances during running my
 > >>>TC.
 > >>>I coil indoors, but the room's walls an ceiling are heavyly steel
 > >>>reinforced and with a good ground and some improvements I had
 > >>>never problem with the phone / TV / radio or computer running
 > >>>while the coil was running.
 > >>>Today I did some short runs and my mother complained that her
 > >>>hair dryer made strange noises like the TC itself during these
 > >>>runs when she was using it upstairs in the bathroom.
 > >>>Has this ever happened before? I feel there is anything bad going
 > >>>on, but why don't the more sensitive devices like the TV set
 > >>>react.....might the grounding for the bath mains be interrupted?
 > >>>I use a Siemens 20A 240V line filter and thought this would be
 > >>>sufficient.
 > >>>
 > >>>Any suggestions?
 > >>>
 > >>>regards
 > >>>
 > >>>Christoph Bohr
 > >>
 > >>I assume the hair dryer is just resistive elements and a common fan.  No
 > >>microprocessors or LCD displays...  I note that some capacitors now have
 > >>uPs and LCDs :-p
 > >>
 > >>First thought is that the coil is dropping the AC line just a little
 > >>bit.  Say 2%.  2% does not matter, but you may be able to "hear" that in
 > >>something that is AC voltage sensitive like the dryer.  It could be
 > >>acting as an audio speaker.  I bet that is it.  No problem at all there.
 > >>
 > >>Another thought is that the sound of the coil is traveling around the
 > >>house (air vents, tile bathroom walls, and all) along with just getting
 > >>out of the shower, with the dryer going...  Just a complex accustical
 > >>thing...  Maybe that part of the house has a mechanical resonance at 60
 > >>(50) Hz...
 > >>
 > >>If you are grounding to the house water pipes...  Hmmm....  Maybe
 > >>something there???
 > >>
 > >>Cheers,
 > >>
 > >>         Terry
 > >>
 > >>
 > >>