FutureT@xxxxxxx wrote:
In a message dated 12/29/2007 3:49:41 P.M. US Eastern Standard Time, dfb25@xxxxxxxxxxx writes: if one was to lay a thick plex or poly disk on top of the primary, would this seem as a less tempting target ? I dunno :-0 Dave, I remember someone reporting that primary strikes were eliminated after they put a plexiglas disc over the primary. John
Hi John, Bart, Gary L.,I've also abandoned to ad a strike-rail to my coils. Primary strikes (which you can have, not regarding strike-rail anyway!) didn't hurt my caps or transformer (Terry filter installed!). An acrylic sheet on top of the primary winding eliminated the sec-prim strikes to the coil, however infrequent strikes to the primary connections were observed. See a picture at:
http://twfpowerelectronics.com/~kurt/UBTT/NewPrimaryHits.jpgIn the picture I've indicated, were occasionally a sec. to primary-system hit was experienced. No damage so far (it's fed by a 15kV/60mA NST). Of course I agree with the conservation of energy argument of Gary Lau, but a small concern remains regarding the dynamics of such a hit: might it be able, to do any damage in short time and at a localized place?
Cheers, and happy new year to the gang!Kurt
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