|
Hi Vasik,
looking at the coil calculator and translated text (pdf page 45 bottom) i try to follow Stalker, but it confuses me.
The text says:
5:00
insulation with a diameter of 4.2 mm
then it is important we measure it does not crush the wire with
a vernier caliper, for example, like this, they came to measure and recorded
that is, we will be interested
parameters: wire diameter with insulation, wire core diameter
your wire will be twisted, twist it into a flagellum
and we measure the diameter of this bundle
5:34
here in my case it turned out 2.5 a millimeter
But looking at the video at that time, he measures a yellow/green wire to be 3.2mm thick (look at the caliper), so not the 4.2mm.
Is that just an example on how to measure, and not the actual wire he used?
Also then, if his wire measured 4.2mm thick, and the core wire (without insulation) measures 2.5mm, then the insulation is 4.2 - 2.5 = 1.7 / 2 = 0.85mm thick and not the 0.5mm mentioned.
Anyway, when using the data of my Grenade, i have:
bobbin dia: 50mm
bobbin thickness: 3.5mm
wire dia: 3.4mm
wire core dia: 1.9mm
So wire insulation: 1.5/2=0.75mm
Wire length: 37.5m
Dielectric: 3.5
So putting this into the calculator i get (see also picture):
Coil length: 952mm
coil windings separation: 4.25mm
Resonance freq.: 3.01MHz
Inductance: 144uH
Self capacitance: 19.4pF
Number of turns: 224
This 2th figure (4.25mm) means my windings (wire dia = 3.4mm) needs to be spaced 0.85mm from each other, i think.......
But i thought the coil windings should be close together, not spaced.
I understand you did not made the videos, but perhaps i misunderstand some of the text i read and/or the video i see.
Itsu
|
Author
Topic: Dally, Shark & Ruslan workbench (Read 309125 times)
