Re: [TCML] Attaching the secondary wire to the topload

[Jim Lux <jimlux@xxxxxxxxxxxxx>]

On 11/7/12 3:27 PM, Brian Hall wrote:>
> What methods have you found work best for attaching that top bit of 
wire from the secondary to whatever topload you happen to have? 
Torodial, spherical, couple of tin cans welded or aluminum taped 
together to make a cylinder etc...
> I refer to the actual treatment of the end of the wire, and where on 
the topload the connection should be made - and how much of the length 
down the wire do you sand or strip the enamel insulation off, do you 
remove insulation from just the side that will be touching the secondary 
or from the whole circumference of the wire, how do you know if you have 
enough insulation removed so it's down to the copper, what adhesives 
work best to secure the connection etc.  Differences between a 
connection where the topload will be removable or where the topload is 
permanent, all that sort of thing.  This subject is one of the arts of 
this craft I have yet to master and I know can be likely to improve 
performance.
>
>

I take all the insulation off by burning or sanding for a length of a 
couple inches. Then I just use masking tape to stick it to the inside of 
the toroid.  It's not like it's carrying huge kiloamp currents after all.

I used to wrap the wire around the mounting bolt for the toroid, but i 
forgot to do that once, and it worked pretty much the same, so after 
that, I became a fan of the "temporary adhesive mounting bracket" 
approach.

A nicer approach I've seen is to anchor it to a lug on the bolt holding 
the topload.
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