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Re: Top Toroid



Hi Dave,

> OK I have a capacitance meter and several toroids, can they be measured
> directly or do you put them on top of an inductor and from the freq. shift
> calculate the capacitance?
>  __     __
> /  \   /  \
> \__/   \__/  does the capacitance change much if the toroid
>  __ ___ __
> /         \
> \__ ___ __/ is filled in the middle. I would think the E-field looks
> similar.

I tried exactly that a year ago by draping foil over the top of my 
lonely toroid and got absolutely no change in its capacitance.

Malcolm
<snips>