Hi Roger, Wow, your "big coil" specs are quite similar to those of my Green Monster coil system: http://www.dawntreader.net/hvgroup/david/gm.html This webpage is quite outdated but the basic tank circuit is still the same. During my last "mini-mid-south Teslathon" in December, Phillip Slawinski caught some decnt video footage of it in operation and up loaded it to youtube. http://www.youtube.com/watch?v=GGb-qWIqx7g&feature=related and: http://www.youtube.com/watch?v=H3pfStBx2qY&feature=related Anyway, I found it interesting that our secondary coils are of nealy identical proportions and wound with the same sized wire (#19). My primary C is a little larger than yours ( .1 uFd vs .085 uFd) and you have gone the extra step and made yours a DC resonant system where mine is still just the plain 'ole asynch rotary gap driven AC input sys- tem. BTW, what is you amperage draw from the mains and how much aprk length are you getting. Mine will pull up to ~80 amps and the spark length is generally in the 11 to 13 ft. range with occasional 15 ft. strikes. My topload is 12 x 56 and I run in the ARSG in the 300 to 350 BPS range. David Rieben----- Original Message ----- From: "Roger Smith" <rwsmith@xxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> Sent: Friday, March 06, 2009 8:26 AM Subject: Re: [TCML] charging reactors
Hi Jim, Most of those pictures are of other peoples coils but I can tell you more about the big coil I use the charging choke on. The secoundary winding is 12.5 inches in diamitor and about 50 inches long wound with 19 gage wire. The primary coil is a flat spiral, taped at the tenth turn. The primary capacitor is about a .085 uf.Roger----- Original Message ----- From: "Jim Mora" <wavetuner@xxxxxxxxx>To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx> Sent: Thursday, March 05, 2009 1:47 PM Subject: RE: [TCML] charging reactorsHi Roger, Nice coils! Can you comment on your TC coil geometries? -----Original Message-----From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On BehalfOf Roger Smith Sent: Thursday, March 05, 2009 9:01 AM To: Tesla Coil Mailing List Subject: Re: [TCML] charging reactorsI use a home made, 6 Hennery charging reactor for my DC resonant charging Tesla Coil. It is basically just several thousand turns of 24 gage magnetwire on an "I" core and I use many layers of packaging tape between each winding layer for insulation. This is fairly inexpensive way to make a choke but it is tedious. Here is a link to some pictures. http://www.flickr.com/photos/29248051@N02/ Roger----- Original Message ----- From: "jimlux" <jimlux@xxxxxxxxxxxxx>To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> Sent: Sunday, March 01, 2009 1:56 PM Subject: [TCML] charging reactorsSo, if one needed to build or buy a dozen charging inductors for a resonant charged spark gap coil, where would one look..It's for an application where there's multiple coils being charged from acommon HV DC bus.Probably need 5-10 H, and it needs to handle a few hundred mA to amp (e.g.10kW @ 10kV is an amp), and, of course, have a 10-20kV voltage rating. I'm looking for ideas that are either off-the-shelf or made from off theshelf things (e.g. no scrounging a half dozen MOTs and then sawing an airgap and rewinding it) (or, some other clever scheme to charge the primary tanks of multiple coils) Jim _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxhttp://www.pupman.com/mailman/listinfo/tesla
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