Re: Need help

From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Sunday, August 31, 1997 4:36 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: Need help

Hi Juan,
> From:   Juan Castro[SMTP:jcastro-at-uninet-dot-net.mx]
> Sent:   Saturday, August 30, 1997 10:47 PM
> To:     Tesla List
> Subject:    Need help
> I am totally newbie to the art and science of making a tesla coil. I wish
> to create one for a science project in my school.
> I would appreciate any suggestion regarding materials, information, or
> comments about security and aspects of building, testing, etc.
> I also found an article in the 1993 Electronics Experimenters Handbook
> (from Radio Electronics) about constructing a Tesla coil driven by "solid
> state components".
> I think I can get most parts but the primary transformer(s) core(s) and
> bobbin(s) that the magazine mentions (TDK #PC30EER25.5-Z, TDK
> #BEER-25.5-118CP; TDK #PC30EC70-Z, TDK #BEC-70-5116) do not exist around
> here (mexico), are they hard to get they hard to get in the states? ( I
> have some friends that migth retrieve some for me) or you advise using some
> other kind of driver or circuit?...

You can use any core that: 
(a) is made of Philips 3Cx. Siemens N27 type ferrite
(b) has the same or greater cross-sectional area
(c) has the same or greater core volume
(d) has equivalent gapping (self-inserted)

You'd be surprised how easy it is to use what you can get once you 
know how :)