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Re: Induction heating in toroid / short circuit of secondary
Dale, Kennan et al,
I'll intersperse a comment under your interspersed comment below:
Subject: Re: Induction heating in toroid / short circuit of secondary
> Original Poster: Kennan C Herrick <kcha1-at-juno-dot-com>
>
> Dale-
>
> I'll intersperse a few comments.
<SNIP, SNIPPITY, SNIP> (Terry, take note!)
> > That's why I checked for arc production between the open ends,
> > to check for significant induction.
> > Ends arced, so it appears there is !
> > or can you present another mechanism responsible ?
> >
> That might offer a handy way to check for t.c. power output: Just insert
> a meter there! Or better still--try connecting a meter across the
> diameter of the toroid, measuring the voltage there. Or maybe a few LEDs
> or even a little battery-operated LCD panel meter suitably rectified.
> Endless possibilities!
The idea is to see what power gets wasted heating the toroid. Consider
this: If you hook a small flashlight bulb across a toroid gap, and you get
no or little glow from the filament, then very little power is being wasted
in the torroid. On the other hand, if a 100 watt light bulb burns out, then
we have a torrid torid, and we should all think about using gapped toroids.
One could use various sized bulbs, starting with higher wattage and working
down, to roughly determine what power is coupled into the toroid. You might
have to tuck the bulb inside the torroid, so it can be seen through the gap,
to avoid arcs from the bulb which will destroy it. (In the world of RF
oscillators, which our TCs are, the light bulbs are called dummy loads. I
think this refers to the load itself, not the person using it!)
If some of you try this experiment, please share the results.
Happy Y2K,
Steve Young