Hi Joshua,
Yes, experience and patience required.
I am really patient...I prefer to wind by hand. Does take a long time but I
strangely enjoy doing it. My results are then near perfect and for me gives
great satisfaction to me for time put in.
I personally don't know of rule of thumb here, some others will chime in.
But for me it is choose a starting one and then it is all experimental from
there trying different sizes. But you do need the capability of tuning room
on the primary.
One one of my current SGTC's it is all tapped out on the primary and I have
an external means of adding inductance for now...so I can try even bigger
toroids.
Chris Reeland
Ladd Illinois USA
Sent from my LG V20
On Thu, Nov 11, 2021, 11:11 AM Joshua Thomas <joshuafthomas@xxxxxxxxx>
wrote:
> Hello all,
>
> Thanks for your earlier help. I've got the varnish drying on my new
> secondary coil, which I'm fairly sure was my problem. By the way, if anyone
> knows a good way to wind coils with few gaps I'm interested. I made a jig
> for winding and used a cordless drill, but even still I get the occasional
> gap in the winds. Is this just one of those "experience and patience"
> things?
>
> On to my real question: Is there a method for sizing a topload correctly
> for a coil? Assuming a toroid, you can choose different dimensions that
> give the same effective surface area and therefore the same effective
> capacitance. Are there useful rules-of-thumb for the proper sizing of a
> topload, as a function of the other parameters of a TC?
>
> Thanks in advance,
>
> Joshua Thomas
>
> --
> Joshua Thomas
>
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