Re: Undamped oscillations

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mike <megavolts61@xxxxxxxxx>

Well,  being that that particular patent it title is:  Coil For 
Electromagnets,  It is apparent to me, that he never intended this to 
be a Tesla coil secondary.   It could  be useful for a primary coil 
if you don't have the necesary primary capacitance to get your system 
tuned, and have a limited amount of primary conductor for winding 
that primary.   For the size scale that Tesla built,  It was likely 
that he had a limited amount of primary cable.  I seem to recall 
reading in his CSN, that he would have parallel primary winding and 
could choose to have them paralleled or connected in bifilar fashion 
for a particular experiment.
Mike


    The patent drawing shows a bifilar spiral coil but I can't find
any further statement about it or of any special properties attributed
to it.
    Bottom line is that in 1894 Tesla apparently thought
self-capacitance was enough of a virtue to patent it.  By 1916 he had
obviously learned otherwise.

Ed


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