Gary Smith wrote:
>How can one see/read/find out as to how low the inductance of a
>particular resistor might be? Am not trying to open a can of worms
>here, am well aware that as a resistor heats up its inductance changes,
>but... ? Larger wattage values= less inductance to what might be
>referred to as the "point of diminishing returns?" No flaming please,
>yes, I should know the answer to this one but I do not.
>That is why I am asking.
Scrape off enough of the paint/cement/enamel to be able to count the
number of turns (n). Measure the diameter (d) and length (b), and then
plug the numbers into the usual formula:
L = d^2*n^2/(18*d + 40+b) uH (inch units)
It would need a vector network analyser, used with some care, to measure
the inductance more accurately than you can calculate it.
--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek
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