-=jd=- wrote:
On 07 Jul 2003, N8KDV wrote:
-=jd=- wrote:
On 07 Jul 2003, N8KDV wrote:
...snipped...
-=jd=- wrote:
Well, the confusion I have arises when I see insulated
wire wound around a core...
Well, it had better be insulated to some extent...
I'll take another look at the info you pointed me to.
jd
So far, looking over the .pdf on xformer construction, and
looking at other sources, it seems to be the magnetism
that is the key. In the .pdf (Fabricating Impedance
Transformers for Receiving Antennas by John Bryant - May
2001)advises in it's last sentence: "May the forces
(magnetic) be with you!"
As to the insulation, one use (not the only use) for it is
to maintain the spacing of the wires. One source stressed
that a couple times.
In general, the info tends to indicate that the winding's
magnetic field interacts with the core's magnetic field in
some manner to acheive the desired result. I can't find
any mention as to the composition of the core having more
of an effect... I'm continuing to look, though.
If anything, you've peaked my curiosity about it enough to
occupy my evenings for a bit.
JD
If you read the article carefully you may discern that the
cores composition is indeed critical. It's indeed right
there in front of your eyes.
As I stated at the start of this discourse, I knew that
there may indeed be some argument or perhaps reluctance.
Been through it before...
Meanwhile... I'll be enjoying the weak signal DX.
I wish you the best of luck.
I just give up!
I'll leave the rest of you to your own devices, schemes,
etc.
I appreciate your voluntary replies. I apologize if, in some
way, you felt obligated to "teach". I can assure you that was
not my intent. I was just seeking opinions.
I understand, I just give up.
jd
|