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#Post#: 1900--------------------------------------------------
The reason lighter gauge works better for LJL
By: lynx wind Date: March 26, 2014, 3:02 pm
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Ahha! I figured out why the heavier gauge wire doesn't work as
well for the LJL. It is very difficult without simultaneously
winding primary and secondary to get the coils to intermingle
enough. If one heavy gauge primary is just laid on top a
secondary it is as if the turns ratio is closer to 1:1 rather
than 6.8:1
I guess any gauge wire will work if the two coils can
intermingle enough.
I got my 20 awg coil working fine once I seated them tighter
together.
A ferrite placed around the two coils helps too, but its best to
get the aircore coil working first.
#Post#: 1902--------------------------------------------------
Re: The reason lighter gauge works better for LJL
By: sut Date: March 26, 2014, 6:25 pm
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I was going to try that but I just have not had the time! or
knowledge!! to tell the difference on whether it was better or
not besides mine is all mucked up now laying in pieces on bench
#Post#: 1928--------------------------------------------------
Re: The reason lighter gauge works better for LJL
By: lynx wind Date: March 27, 2014, 9:11 pm
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So what I am finding is that a smaller gauge secondary is a
benefit because it can be fluxed better by the primary being in
closer proximity. The first LJL-sc I made I sent to Laser
Saber. His comment was it worked better than the typical
aircore and many of the ferrite core. I assumed it was
something about the 4" diameter and tight coil. It was a 30 awg
and 26 awg coil. Now I think it performed well because it is
very nearly saturated much like a ferrite core.
I will experiment with some various sizes of 30 awg and 24 awg
coils. We have to make sure the primary can handle up to 4
amps.
I would recommend if you guys make these you wind them tightly
and bind them into as thin a coil as possible. It may be
possible to lose the ferrite and get back to a simple coil and
transistor.
We should also experiment with the diameter and number of turns.
#Post#: 1934--------------------------------------------------
Re: The reason lighter gauge works better for LJL
By: happygolucky Date: March 28, 2014, 12:39 am
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;D i like this idea tight
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