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Re: Air core chokes?



"Also, how do I set the gaps on a protective spark gap?  Just set it
'till it stops firing, or can I calculate what I need.  (12kv 30ma neon
and probably about .005 uF main capacitance.)"
	Set the gaps so that they "just start to fire" with everything,
including the capacitor, disconnected.  That capacitor is big enough
that you will get significant 60 cycle resonant rise in secondary voltage
when it is connected.
	As far as the chokes, try winding a couple of coils of #30,
12" long and 2" ID.  That will give a significant amount of inductance
(about 8 mH each) and will take the voltage.  With that and the safety
gaps your transformer should be OK.  (Experts please comment.)\
Ed Phillips