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Posted:
Thu Dec 18, 2008 1:47 am
by selamatg
Hi Mop,
That should be no problem I guess.....
But if you can twist the wire would be better in result and that will keep parallel
Selamatg

Posted:
Thu Dec 18, 2008 1:17 pm
by Jan-Willem
hi again
i can not say that your bidini will not run, but it will definitly effect your machine's peformance
this is what i did:
we tied one end of the wires (both) to something like a street lamp. Then we rolled out the whole spool and made sure that the wires were equal lenght.
THEN YOU TAKE A DRILLING MACHINE, put a hook in the chuck, tie the other end of the wires on the hook will pulling the wies tight, and then you can easy twist the wires together when the drilling machine is winding away.
After that you can be sure that all your wires are definitly going to be together and the same length.
This is very quick and neat
hope that it helps
JW

Posted:
Fri Mar 27, 2009 12:05 am
by BeginnerThinker
I am VERY new to this but enjoy the idea so I am now building my own. I am currently contemplating construction materials for the coil itself. Does the actual wire size matter or is it just a different size to change the lenght of each wire within the coil? If it is the latter, is it possible to get a large coil of telephone wire (3 twisted pair = 6 wires) and wire 4 of the 6 pairs in one series and the other 2 in a series as well creating a pre-wound coil with 2/3's length in one series a 1/3 in the other?
In the link below it shows a data cable much larger than what I pictured but the same idea.
http://www.youtube.com/watch?v=wUsFZoj2 ... L&index=26
Thanks for your patience with us beginners.

Posted:
Tue May 26, 2009 8:47 am
by Shanjaq
Is the coil supposed to be self-oscillating when the magnet is not in motion? I have a 24awg and 32awg bifilar coil of 100 imperial feet, didn't bother to twist them on a drill before winding. As with all circuits, on first powerup I have an EMF meter monitoring the airwaves, and when I turned on this circuit I got an audible whistling noise extending about 8 feet away from the coil. Frequency went up as I dialed the potentiometer to a higher resistance value.
When the magnet started spinning, its rotation modulated the whistling noise, and if it stopped and stuck to the core, I didn't need an EMF meter to hear the coil whistling!

Posted:
Tue May 26, 2009 2:15 pm
by BeginnerThinker
The twisted pair wire the telephone company uses is twisted for just that reason. To reduce EMI.

Posted:
Tue May 26, 2009 7:40 pm
by Shanjaq
But my question is: Should the coil be self-oscillating when the magnet is not in motion?