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EMI



>Run the coil and allow spark break out.   The sparks will produce a very wide
>band signal.  This can easily be detected on FM, the TV etc.  Perform the walk
>test again.

	A small caveat.  receivers, esp consumer ones, are NOT only sensitive
	on the freq tuned to.  Put another way, the received bandwidth is
	not infinitely sharp, with infinite cut off.  It is quite possible,
	esp in high field situations (8)>>) for a signal with NO energy at
	'f1' to be, apparently, received at 'f1', because it bypasses all
	or part of the 'front end'.

==========================
A possibly silly suggestion, in re construction of capacitors:

	It was mentioned that stacking up multiple sheets of dielectric, to
	get higher withstand voltages, created difficulties, in that the
	sheets slid around.

	Would it be possible/desirable to temporarily bond the sheets together,
	say along one edge, to avoid this?  Using heat, or solvents, or
	whatever, possibly even leaving an extra strip of dielectric for the
	purpose?  Once the assembly was complete, the 'extra' strip might be
	cut off, avoiding any potential (8)>>) problems with the eventual
	voltage stress on the modified area?  (Or simply make the sheets
	oversize, so that the 'bonded' area was outside the area subject to
	high fields?)

regards
	dwp