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Re: straight core transformers and chokes
Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com>
John: The straight core used years past was made of burned bailing wire
laquered to bind solid then cut to length to form the core for the copper
wire spools and primary windings .
> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Tue, 02 Sep 2003 20:16:37 -0600
> To: tesla-at-pupman-dot-com
> Subject: Re: straight core transformers and chokes
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Tue, 2 Sep 2003 20:23:46 -0600
> Original poster: John <fireba8104-at-yahoo-dot-com>
> Plans for a spark coil can be found at
> It's referred to as a secondary coil. There is also plans for a small
> bi-polar Tesla coil powered by the above apparatus.
> Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Antonio Carlos M. de Queiroz"
> Tesla list wrote:
>> Original poster: dgoodfellow-at-highstream-dot-net
>> I am contemplating the construction of a straight core transformer. I read
>> an old Tesla coil how-to book from the 20's that was on microfilm in the
>> New York public library a long time ago. My hand written notes from 20
>> years ago are as follows:
> An induction coil. They can be used as power supply for a Tesla coil,
> specially if you want to power it from batteries. An induction coil can
> be seen (or designed to work) as a Tesla coil where the input energy is
> in the primary inductor instead of in the primary capacitor. Design
> constraints lead to the very different structure, with a large
> in the secondary coil.
> The book that Terry mentions is good. M! ost of the same material can be
> found in the Scientific American, in the issues from around 1900.
> Two sites about induction coils:
> Antonio Carlos M. de Queiroz